9 Signs He's Really Not That Into You

Wpf combobox set selected item binding

wpf combobox set selected item binding In your case it sounds like your ComboBox holds string items. lt ComboBox ItemsSource quot Binding MyList quot SelectedValuePath quot Id quot . That is OK but it s nice to let the user know that there is more text than what can be seen. The ListView will then set it 39 s DataContext to the See full list on c sharpcorner. IsEditable property to True . Similarly if the current item changes then the selected item in the view will also match that. ListView 39 s ItemsSource and SelectedItem properties are data bound to equivalently named nbsp 17 Jun 2013 When a user is selecting an item from a cascading ComboBox another This post is about how you can implement this behaviour in a WPF application using The view model an instance of this class is set as the DataContext for the The ItemsSource properties of the ComboBoxes are bound to the nbsp 3 May 2011 Next Code sample Binding Telerik controls WPF This sample shows how to set up the combo box bindings in a Silverlight application. However when I display the message box from the command the PhonebookEntry property still has the initial value in it not the selected value from the ComboBox. At design time the source code looks like this Hi In a WPF app in MVP app. However When I save the object or else launch for the first time the selected items do not get bound. Add item to combobox Jun 06 2017 Here we will bind datagrind control with a data table which we will populate in the code behind. Data. We use properties on DataGrid such as ItemsSource to populate it. Jun 17 2013 Cascading ComboBoxes in WPF using MVVM. ToString The Text Property helps get the selected Item. Jeez Nov 21 2011 You could also bind to another XPath expression based on the current node. com Nov 30 2018 Now for binding the combo box in WPF MVVM I will explain two methods one is using simple binding and another is using item template. Sep 23 2010 I needed the source of the items in the ComboBox to come from one ViewModel and I needed to bind a property of the original object of the currently selected item to a property in another ViewModel. Jan 09 2012 command. What i have done Jun 28 2018 SelectionChanged method will be called when the user changes and selects an item from our WPF Listbox. SelectedItem Customers. The listbox displays the items as designed in the Second we can select an item in the DataGrid but it is not set as the selected item of the ComboBox. My problem is that when I set the value for my ComboBox change to another tab then change back the ComboBox is empty again. Do not use DisplayMemberPath her May 13 2012 Let 39 s say we want our ComboBox to display one thing for the selected item and another thing in the dropdown. Apr 25 2010 A user selects a new value from a WPF combo box. To do this you can right click on the ComboBox element in design mode in Visual Studio 2012 or 2013 and select the Edit template option and then the Edit a copy option. For example if I wanted to data bind a ComboBox to this enum I would have to set it s ItemsSource to a new Binding and set the source to that of our enum ObjectDataProvider we created above. but in my case I do not have a binding source ready in my program When using data binding you specify the collection of items to fill the ComboBox by setting the ItemsSource property. Assume that you have the following two classes which may Oct 11 2008 If you have a ComboBox with a fixed width and the selected item is wider than that width it will be clipped. However there is a small bug that if you select an item in the list highlighting the input text then press BackSpace the input text will revert to the selected item and the SelectedItem property of the ComboBox is still the item you selected previously. So how do we specify two different DataTemplates This is a very common problem and it can be solved in a Dec 24 2013 When you use data binding to associate a property in your data context to the currently selected item in an ItemsControl e. dll 39 . Bind to the Viewmodel Most WPF developers will be using MVVM and their Window 39 s DataContext will be set to an instance of a ViewModel. DataView. The other two ComboBox elements are an example of the cascaded ComboBox using List lt T gt class. Something happens when CustomFontFace is a string and both the XAML binding and code behind try to set SelectedValue where the combobox value ends up blank. Before the items added to the Combo box I want to display the default text such as quot Select Team quot so that on pageload it displays and on selecting it the text should be cleared and the items should be displayed. This is of type object and we can bind any type derived from object type with this property. A ListBox shall show all the items of the selected category. I want to create a checkbox list in a WPF combo box and want to retrieve the selected values from the user I created a simple example for which iv posted the code for this. As you can see from the first examples manually defining the items of a ComboBox control is easy using XAML but you will likely soon run into a situation where you need the items to come from some kind of data source like a database or just an in memory list. SelectedIndex 0 private void ComboBox_SelectionChanged object sender SelectionChangedEventArgs e Get the ComboBox. Nov 12 2013 Hi I am stuck on a problem I could use help with. Mar 03 2011 WPF Contextmenu For ListView item WPF Multicolumn ComboBox WPF theme Substring and add String in WPF WPF Delete Selected Item From Listview How to Get Machine IP Address WPF add listview column binding in XAML February 15 January 5 2010 2 August 2 Select all Open in new window. Visibility quot Binding ElementName comboBox Path SelectedItem Converter StaticResource nbsp WorldData . ItemTemplate gt lt ComboBox gt After the application of above update running the application and selecting the combobox item the correct item seems selected. 0 I faced the same problem with the malfunctioning binding. return _CurrentPerson set if value _CurrentPerson return if MessageBox. There are two aspects to such a binding The View. Command quot Binding CommandImpl quot gt ComboBox gt This can be used for ListBox and ListView as well. Otherwise the current item pointer is set to the first item of the filtered collection view. See this StackOverflow discussion for background information And then data bound only these two properties to a ComboBox lt ComboBox ItemsSource quot Binding SalesPeriods quot SelectedItem quot Binding SelectedItem quot gt That 39 s it that 39 s all you need for a perfectly working example. The ComboBox dropdown displays exactly as required but when an item is selected the Text property of the ComboBox shows System. His approach aims to be XAML only and it came pretty close. As a result the first row of the GridView was selected initially. Get the ComboBox reference. There is several ways to allow ComboBox to select a null value By Code You can create a list of items and add a null item not a null value but and item instance representing the null value . Kelly 39 s answer is great. Jan 30 2014 Using behaviours to bind to read only properties in MVVM Posted January 30 2014 Author Magnus Montin Filed under MVVM WPF Tags C MVVM WPF 6 Comments If you have ever tried to for example bind the SelectedItem property of a TreeView control or the SelectedDates property of a Calendar control to some source property of a view model you know that these properties are read only Before I can answer your question there are some confusions that should be cleared up. The property is set correctly when a new selection is nbsp . ATUALIZA O. User says No . When binding a ComboBox in WPF you don t have access to select a null value. The reason is that the blue background or gray if the control is not focussed is drawn outside of the data template. How do I set this to show meaningful values e. In the case ItemsControl such as combo box the ItemsSource property needs to set to a list or collection of values. The ValueMember property Foreground property is used in ComboBox to set or get the foreground color of the content. 4. The purpose of the SelectedItem property is to get or set the currently is data bound to a collection of custom objects the SelectedItem is of the type of the nbsp ComboBox SelectedItem . This article is about how you can implement this behaviour in a WPF application using the MVVM Model View ViewModel pattern. Pastebin is a website where you can store text online for a set period of time. The trick here is that when you have to bind to the SelectedItem on an ItemControl bound to XML the selected item itself is an XmlElement and you have to use XPath to get to the needed element attribute. Country_ID. Whichever item is selected is visible others are hidden. 2. I am trying to create a reusable control for WPF which allows the user to select a null option in addition to all the items in the ItemsSource binding. SelectedItem SelectedValue and DisplayMemberPath. The template for a ComboBox consists of a TextBox and a Popup as well as several other visual elements . The selection of the items can be handled using SelectionChanged event. Jun 06 2013 Example ComboBox of Data Binding in WPF. If you select different entries several times sometimes the item is not selected. Since we will be using the MVVM binding for our combo boxes in that case this is the property which we can use to notify VM that item has been selected. The reason for the delay is that WPF creates the complete display for the ComboBox in advance regardless of the fact that it might only display a tiny proportion of the total number of items. Hi All I 39 m trying to bind a textbox to a listbox 39 s selected. If RuleType is a list how come it 39 s set as the SelectedValue of your ComboBox Shouldn 39 t it be ComboBox. The reason behind this behavior seems to be the fact that both ItemsSource and SelectedItem are bound to the same dependency property Apparently when Order is set to null during unloading WPF realizes that the ItemsSource is no longer valid and therefore clears the SelectedItem to which the combo box still appears to hold a reference at this moment which brings it down to a question of proper coercion. What I wanted to do was bind the items in the ComboBox to a list in my ViewModel and to track the currently selected item. Sep 10 2007 Re ComboBox selectedValue vs selectedItem Use SelectedItem when your combo isnt data bound and SelectedValue when it is and you have set the ValueMember to a column on a datasource quot it 39 s a fax from your dog Mr Dansworth. Jun 23 2010 The thing is I can easily set the SelectedGroupQuestionnaire to whatever I want but it doesn 39 t change the fact that although it has that value the combobox isn 39 t visually updated ie. ItemTemplate. I have a combo box for which I display the data fetched from Database. If the IsTextSearchEnabled is set to False the issue will not be Aug 19 2018 The code above contains 3 ComboBox elements. 2 days ago I want to bind the exposed property Values of each item ParameterValues in my ListView to the combobox column and have the exposed property SelectedValue as selected item. However because the SelectedValuePath of this RadComboBox is set to agency phone the SelectedValue is set to the Phone property of the Agency business object. SelectedValue SelectedValue property is used to get the value of the selected item which we will get by using the SelectedValuePath. Use ItemsSource instead. Here s the In this case the selecteditem bind doesn 39 t work because the hash id of the objects are different. SelectedValue Property helps you to get the hidden value of Combobox selected Item. Country. com May 23 2017 The source objects correctly get added as items to the ComboBoxes and the source object will update as a selection is changed. Attachment ComboBoxAdvBindingProblem_ProblemAfterDropdownSelected_afe9b23e. So you have two options one use strings as the combo box items this allows you to set SelectedItem SelectedValue quot meter quot or quot centimeter quot Recommend c WPF Access combobox selected item Set SelectedItem WPF ComboBox. SelectedItem through a custom dependency property in a UserControl I ran into this building a user control based on the requirement that we need a combo box that includes an edit button next to it when needed and also provides a label when needed. However when I replaced the return statement with an Exception UpdateTarget works The selection box template allows you to define a DataTemplate for the selected item thus customizing the Selection Box part of RadComboBox. WPF ListBox is a collection of ListBoxItems. c wpf x. When using data binding you specify the collection of items to fill the ComboBoxby setting the ItemsSourceproperty. When data is bound to a WPF control using ItemsSource you must change the selected item using SelectedIndex. Combobox is used to display a collection of items. No support for TextSeach. net How to change the application icon d Multiple values selection in a desktop application WPF How to make a Viewbox aware of its available s lt ComboBox ItemsSource quot Binding Path Users quot gt lt DataTemplate gt The context for each DataGridColumn is the item that it is being bound to. 17 cmbBudgetYear. SelectedValuePath is bound to ValueString property of the ComboBoxItemString object in the ItemsSource list. g. g. Note that in my case the ViewModel which the ComboBox needed to get its items from was the DataContext of the page and the DataContext of the Jun 06 2017 Binding Combobox to a List in WPF. Binding to the Current Item in WPF. SelectedIndex SelectedIndex property is used to get or set the index of the selected item. there are no errors. Aug 18 2009 Binding to ComboBox. The TextBox binds its Text to the ViewModel 39 s SelectedItem property. ViewModel has a SelectedItem property. Recently I realized that TreeView. As soon as you want to bind more than one property e. The path must be set to a property that can contain null because the EmptyItem return null for everything. cmb. When a user is selecting an item from a cascading ComboBox another ComboBox gets automatically populated with items based on the selection in the first one. id quot added on Date quot country. Instead all ComboBox are generated as having no selected value. Apr 19 2018 The ComboBox displays the list of items correctly and I can select one in the UI with no problem. country quot ID quot country. What I need to do is to create a bindable selected items property for my combobox so that it can bind to my view model in two way mode. SelectedValuePath helps to store values like a hidden field. If the user input quot va quot the combobox filters the items to remove ones persons whose Name don 39 t contain quot va quot . In fact there 39 s no DataContext set at all. When we run the application the grid will bind with the person details and city combo box will be bound with the cities list. ComboBox DataTemplate defines a ListBoxItem for each item in combobox. So how do we specify two different DataTemplates This is a very common problem and it can be solved in a number of ways. Now on my code behind what i did is to set the DataContext of the combox with the name of the table to which i want to bind the comboBox here i have created local table at runtime and assign it to the comboBox. One possible approach you could use is to extend the functionality of RadComboBox by using an attached property and add the desired items to the SelectedItems collection of the ComboBox. now when i ran the application if i set a breakpoint on get field i can see it is trying to get it and that the value returned is correct but when gui is finished loading selectedindex is set to 1 and selecteditem and selectedvalue is set to null and combobox doesn 39 t show the selection of the field but if i change the line into 3 When page init is finished i load page data to setup the form I set loaded comboboxes to the selecteditems 4 page. wpf documentation ComboBox with custom default text. Jun 28 2008 This syntax SelectedItem quot Binding SelectedItm quot actually means that you bind the SelectedItem property to the SelectedItm property of whatever happens to be the current DataContext of the ComboBox. The ItemsPresenter displays each item in the ComboBox the ScrollViewer enables scrolling within the control . 17 Feb 2014 You can also bind the currently selected item in the ComboBox to an can set the DisplayMemberPath property to the string typed property of nbsp There is a list of strings which I want to show in my ComboBox. This feature is available only with Non Editable RadComboBox. cb_Status. Show quot You Selected quot country. FindIndex d gt d. 13 Jun 2017 For binding ComboBox using MVVM in WPF some properties needs to set in property will be set as the current item selected in the combobox. Items property directly. Jan 30 2018 WPF ComboBox SelectionChanged method helps us get the object selected by the users on the WPF Form Page. Execute selector. In your ViewModel class you have to create a List and an object to bind the selectedItem of the comboBox. Note in the above sample it is necessary to set the ComboBox 39 s ItemTemplate property in order to display the item correctly. It changes its value every time when the row selection changes and exposes the object to which the row is bound. For example SelectedItem Binding Path SelectedCustomer nbsp tbl_Representaion select a . I 39 ll cover the following topics in the code samples below MainWindowWindow Dictionary Partial Int and String. May 13 2012 Let s say we want our ComboBox to display one thing for the selected item and another thing in the dropdown. We will also set the first item as the selected item in our combobox using the selectedIndex property. You can customize this template to customize the content of each item. lt DataTemplate gt . Run the code in debug until Window pops up the place break point on Property Width Angle 39 s set When a user is selecting an item from a cascading ComboBox another ComboBox gets automatically populated with items based on the selection in the first one. Obviously when the RefreshMyItems method is called the combo box receives the Collection Changed events updates its items and does not find the SelectedItem in the refreshed collection gt sets the SelectedItem to null. Important You need to set a Tag attribute per ComboBoxItem and also set SelectedValuePath to Tag . But SelectedValuePath and SelectedItem took some experimentation to get right the above works for me but with some variation came some pretty strange bugs. Sep 28 2010 The first is to simply bind ComboBox. ColumnSpan quot 2 quot Margin quot 10 quot ItemsSource quot Binding Categories quot public Category NodeCategory get return _NodeCategory set _NodeCategory value nbsp Use the WPF ComboBox control with the ItemsSource property in C code. com This article shows how to bind data dynamically from the database and get the ComboBox selected Text and Value. lt ComboBox ItemsSource quot Binding Path BarList quot DisplayMemberPath quot Name quot SelectedItem quot Binding Path SelectedBar quot gt and FooViewModel contains a simple Property public Bar SelectedBar get set . The data context of the container containing the list box is bound to the currently selected item of the combo box. If the object is found in the list it is displayed in the edit portion of the ComboBox and the SelectedIndex property is set to the corresponding index. Jun 08 2015 In previous articles we explained WPF ComboBox with Image Display Image From Folder or Current Directory Export GridView to PDF Remove Default Mouse Over Effect on WPF Buttons etc and now we will move on Set property of ComboBox within UserControl instance. 14 Sep 2010 If it does set this item as the new selected item. Prior to R2 2010 version the current item was synchronized with the selected item. The UpdateSourceTrigger PropertyChanged is useful to get the variables in our ViewModel updated in the same moment when the user changes value to the comboBox. . Items gt nothing got selected in the combobox and accordingly OnSelectionChanged event don 39 t fire Jul 11 2012 WPF XMAL trigger from button to change combo box item color. Oct 13 2011 It doesn 39 t help to only bind the SelectedItem to a property in the view model since the Binding works with INotifyPropertyChanged. There are 3 styles created You can also bind the currently selected item in the ComboBox to an instance of an object in code. That is When the user selects a new item in the list the value of the bound property changes If the value of the bound property . ItemsSource for the ListBox plus Text for a Label you need to implement custom DependencyProperties. The SelectedITem binding is incorrect. SelectedItem ViewModel ComboBoxItem ViewModel . Items get the item with the Now. For more information about the binding extension as well as for a list of Binding properties that cannot be set using the binding extension see the Binding Markup Extension overview. The user can type a value in the text field or click the button to display a drop down list. Nov 07 2011 Binding ENUM to WPF control ComboBox I believe I explored quite a bit on finding the best approach for my requirement of binding Enum to WPF ComboBox and thought to share the gradual steps here for a one stop place which hopefully will help similar minded technical enthusiast . GetTypes Highly The multi selection combo box is a WPF custom control with multiple item selection capabilities along with customizable features to group sort and filter items in the collection. Having this resource we can bind it as an ItemsSource to a ListView and Combobox or any other ItemsControl by setting items source ItemsSource quot Binding Source StaticResource dataFromEnum quot The XAML for the window is as follows lt Window x Class quot WpfApplication1. lt xctk PropertyGrid x Name quot MyPropertyGrid quot gt All the rest of the XAML markup is to handle adding a list of items to my ComboBox that is not hard coded. SelectedItem Set the command in xaml as shown below lt ComboBox SelectionChangedBehaviour. the combo box selection change event using MVVM pattern in WPF. This is when the IsEditable property of the control is set to False default value . dlg. Each time a property is changed an event will be raised and the GUI gets notified about it. And for getting the selected item here is the code private void lstBox_SelectionChanged_1 object sender SelectionChangedEventArgs e var item ListBox sender var country Countries item. 22 May 2017 Furthermore it is pointless using your displayPeriod property as the WPF Framework was that I had to set UpdateSourceTrigger PropertyChanged for the binding. One possible solution is Based on the selected item id recover the object on the itemsource collection and set the selected item property to with it. You do this by binding the SelectedItemproperty to a property in your code that represents an instance of the appropriate type. 19 Jan 2016 Setting SelectedItem from ViewModel XAML code lt ListView ItemsSource quot Binding SalesPersons quot SelectedItem quot Binding This possible bug is happening only in Android when I set the ItemsSource field the first time. Each of the binding on the ComboBox have the UserControl 39 s name as the ElementName. Just as an example this is the pseudo code lt sync GridComboBoxColumn HeaderText quot Title quot MappingName quot SelectedTitle quot ItemsSource quot Binding AvailableTitles quot If you select different entries several times sometimes the item is not selected. Usually the SelectedValuePath is set to the Key property while the DisplayMemberPath is set to the Value property. Here 39 s my implementation of a WPF ComboBox that takes the traditional Text Search on prefix via the IsTextSearchEnabled property to the next level. Content properties. 2 000 Things You Should Know About WPF. By using window. The UpdateSourceTrigger PropertyChanged was required to cause the TwoWay update to change that row s data item property value. A combobox is a selection control that combines a non editable textbox and a drop down listbox that allows users to select an item from a list. Jan 24 2018 A lot of times in GUIs we use ComboBoxes to let the user choose one of several options. Apr 24 2017 I am trying to Bind the SelectedValue of a ComboBox to the view model. Nov 14 2016 Attempting to bind a Combobox with a list of states from the database. By default the content of the items will be set to the value returned by the ToString method of the underlying business objects. lt ComboBox SelectedItem quot Binding SelItem Mode TwoWay quot ItemsSource quot Binding MyItems quot gt When the user selects a new Item in the View ComboBox I want to display a prompt and verify that they want to make the change. WPF Data Binding ComboBox Items List As I learn WPF I m running into quite a few roadblocks but I m enjoying the fact that it s a challenge and something new. You may have to register or Login before you can post click the register link above to proceed. As explained in the CollectionView Tips article this doesn 39 t actually give keyboard focus to the row in the datagrid so there are a couple of attached behaviors which need to be Sep 26 2010 In the combobox we 39 ll use the Value part of the Dictionary to display the choices to the user. The ComboBox control which lets the user choose one of several choices. If the SelectedValuePath point to a primitive or a struct the value is not set and the empty item not selected it shows up as selected but the underlying data won t change . . Name But it doesn 39 t work any ideas It 39 s always null lt radcombox x name quot cmb quot SelectedValuepath quot Name quot SelectedItem quot Binding Name Mode TwoWay quot thanks The UserControl itself has an x Name set. Binding ComboBox using MVVM in WPF Apr 19 2018 The ComboBox displays the list of items correctly and I can select one in the UI with no problem. There is no null item of course. can see the state of Washington is selected and its state code of WA is bound to the TextBlock above The trick to doing this is to set your XAML for your ComboBox like this . Or you can overwrite the . Show quot Selected ZoneName quot ComboBoxZone. It sounds easy enough but the problem is that there is only one ItemTemplate. com is the number one paste tool since 2002. Without the need for my list of values for my custom ComboBox the XAML would literally look like this. Following is one option SelectedItem quot Binding SelectedUser UpdateSourceTrigger Proper tyChanged quot which requires following changes public class CWWDefaultScheduleWeek You can select the item or get the index of the selected item by using the SelectedIndex property. Any assistance would be greatly appreciated. Place a ComboBox in your WPF Page or Window and add some ComboBoxItems via the Items property e. IsEditable property helps to edit the text in ComboBoxAdv. But I would need the combo box to use Equals method to select the correct item in the new collection. So something like lt ListView ItemsSource quot Binding ElementName cmbID Path SelectedItem quot gt When a user makes a choice in the combobox the SelectedItem property changes which the ListView will detect via the binding. Consider the following ListBox example again from I is for Item Container Some developers new to WPF sometimes ask how to bind ComboBox items to a Dictionary. WPF app is built with MVVM such that the combo box 39 s SelectedItem is bound to a property on the ViewModel. SelectedValue quot Binding SelectedId quot gt . lt ComboBox SelectedValue quot Binding Path MyProperty quot SelectedValuePath quot Content quot gt lt ComboBoxItem gt A lt ComboBoxItem gt lt ComboBoxItem gt B lt ComboBoxItem gt lt ComboBoxItem gt C lt ComboBoxItem gt lt ComboBox gt Now you are binding the SelctedValue to the MyProperty property using the selected item 39 s Content property which happens to be the strings you are looking for. This article is about how you can implement this behaviour in a WPF application using the MVVM SelectedItem Selected Item helps to bind the actual value from the DataSource which will be displayed. To prevent this you need to set the IsSynchronizedWithCurrentItem property of RadGridView to False. When a user clicks on an item in a ListBox control to select the item the background color of the selected item is set to a system defined color a medium blue by default. For this choose New Project on the File menu or press Ctrl Shift N and then choose WPF Application. Display different wpf control nbsp 27 Jan 2017 Using the ComboBox SelectedItem property in WPF MVVM. Other TextBox instances are updating fine and displaying in the MessageBox. First I had to set SelectedItem quot Binding Path SelectedItem quot in the Listbox. However no matter what I have tried it is not working. The hierarchical inheritance of ComboBox class is as follows Commonly Used Properties of ComboBox Right click on the first ComboBox in the designer choose quot Edit Template gt Edit a Copy quot . In that we take one WrapPanel to hold Image and Label controls. My WPF XAML Datagrid Code Nov 13 2017 Questions In C WinApp how can I add both Text and Value to the items of my ComboBox I did a search and usually the answers are using Binding to a source . DisplayMemberPath Sets the display text for the control i. Apr 17 2015 In this post I ll show to you an interesting feature how to bind a list to a ComboBox item in the UI. This is the code sample that I ma using but it is not functioning. SelectedItem which is bound to a new string property on your ViewModel lt ComboBox ITemsSource quot Binding Hours quot nbsp 13 Feb 2017 WPF Combo box selected item value RRS feed middot Archived Forums. class property we have to select any item from the combo box collection. This means you Continue reading WPF Simple way to use enums as ComboBox items Jan 23 2012 Today we are going to see how we can change the color of particular Combo box item. navn and everything worked Hope this will help someone else . comboBox. However one of the developer s common issues are the availability of command in controls like ListView or ComboBox. You can use the ListIndex property of the ComboBox control to get set the index of the selected item. Aug 13 2010 lt ComboBox. So now I know. Nov 05 2014 This is a note to remind me how to bind a xaml combo box directly to an enum property defined in the ViewModel. When I say you cannot set the SelectedItems property you cannot set the binding after initial load. Suppose we have a DataSource bind to a collection from Database. When an item is selected from the dropdown list this is the property used to get the value to set the SelectedItem value to. Jul 21 2009 I have been a disciple of MVVM as I am enjoying the way binding works for the command model of WPF. Models being renamed and stuff. To be able to change the background color of a ComboBox in a WPF application running on Windows 8 you have to modify its default control template. In my application I have several screens and the user can navigate between them. Let 39 s say we want to populate a ComboBox with some titles. I think there s no point explaining why binding SelectedItem would be useful so there should be no surprise in my disappointment. I haven 39 t been able to log enough to see exactly what 39 s happening. ToList . Example 1 Accessing RadGridView 39 s selected item Dec 15 2009 However if you close the Window that contains this ComboBox then the whole display has to be rebuilt and the initial longer delay will reoccur. It has rows and columns. The ComboxBox also needs a SelectedValuePath. I would like to do this that in the combobox Group there are all DESCRIPTION of table GROUP and when i choose an item of this description of first combobox the second combobox fills of descriptions relating only to that description that I have chosen before. This is handy if the ComboBox values for display match exactly those defined in the backing enum. What happens in this case is that the Populate method sets both SelectedItem and Items to null so the ComboBox looks empty and then it disables the ComboBox and makes the watermark Label visible. Mar 17 2019 WPF ListBox Tutorial. The ListBox class in C and WPF represents a ListBox control. This behavior was not seen on MS ComboBox. The drop down that contains the items in the combo box. Sep 18 2009 A nice way to include the None item along with the data objects in the same list is to use a CompositeCollection. All we typically do is set a binding on the ItemsSource property for the control. When the user selects an item in the ComboBox the corresponding object is updated to refer to the selected object. In addition I want to be able to have a dependency property on the control which sets the text to display for the null option. In the case of WPF properties are the ideal interface between GUI and objects. Year. Binding to a CompositeCollection allows you to combine objects from multiple sources which in our case would be the None item and the real data objects so they all appear in a single list. WPF Combobox Selected Item Binding Issue. Databinding I directly bound the GroupBox 39 s DataContext to the SelectedItem of the ListBox lt GroupBox Header quot Book Details quot DataContext quot Binding ElementName _lstBooks Path SelectedItem quot gt Jan 25 2012 The client asked for the users to have the ability to filter the items in the drop down but still force them to choose an item in the list. In this article we create one usercontrol and set the combobox in it. We will create a readonly string array and set it as the data source property of our ComboBox. The property is not updated either. Jun 17 2013 When a user is selecting an item from a cascading ComboBox another ComboBox gets automatically populated with items based on the selection in the first one. Listing 3 Property for binding to the selected item chosen by the user in the combobox For some unclear reasons WPF s ListBox control does not allow two way binding on SelectedItems property the way it does with SelectedItem. net How to change the application icon d Multiple values selection in a desktop application WPF How to make a Viewbox aware of its available s Jul 14 2008 Dany Laporte. I need to persist the Combobox s Selected Item and bind it back when user navigate back to the screen. Here is the code I use. See full list on codeproject. ComboBox is an ItemsControl which means it can contain a collection of objects of any type such as string image or panel . This post is about how you can implement this behaviour in a WPF application using the MVVM Model View ViewModel pattern. Aug 03 2010 The problem with binding DataContext is that you can only bind a single property. For example I 39 m using a multiselect combo box to save sets of settings. User can click the combox and select any other item from the list of items. We bind SelectedItem to a property that is also shared with a label to show the result. You do this by binding the SelectedItem property to a property in your code that represents an instance of the appropriate type. I have a ComboBox that has the SelectedItem bound to the ViewModel. a ComboBox control 39 s SelectedItem property to bind to an instance of a selected object For a parameter that is expected to be one of the limited set of values. resources we can do this things. A complete walkthrough of how and when to use the WPF ComboBox control. The PropertyChanged event is raised when the property is changed and that is the way the Binding knows to change the DependencyProperty 39 s value. WPF ComboBox and DataBinding DataContext ItemsSource of the page is set to your ViewModel instance and that the ComboBox has inherited that DataContext. lt ComboBox ItemsSource quot Binding SalesPeriods quot SelectedItem quot Binding nbsp Add a binding to ComboBox. The good thing is you can use a list of string or anything else custom class with some attribute to show in the selector. A search of the internet yielded some solutions but each solution required me to set the ComboBox. itemsSource instead If the ComboBox 39 s SelectedItem binding is correct when the window shows the 2 comboboxes should have first item in the list selected I bet that currently with your code the 2 comboboxes have no item selected when the window shows up . Add a ComboBoxEdit component to the project. When you Run the Program the Output with ComboBox Items is as follows Get the Text and Value of Selected ComboBox Item private void btnZone_Click object sender RoutedEventArgs e WPF Clear SelectedValue of Combo box on delete button press and Handling Other keys and Cut Copy Paste Events You can use following code to Delete the SelectedValue of combobox on delete button press event with preventing other key inputs. Set ComboBox Selected Value in Silverlight Window. Nov 13 2017 Questions In C WinApp how can I add both Text and Value to the items of my ComboBox I did a search and usually the answers are using Binding to a source . It either displays the current selection or is empty if there is no selected item. Net ComboBox Bind to a Collection of Objects Lookup Mode To bind the ComboBoxEdit to a collection of objects use the DisplayMember and ValueMember properties. In this example I will be binding the WPF Listbox from MS SQL Database Model public class Countries public int id get set public string country WPF ComboBox SelectionChanged SelectedItem Method. In Combobox control only one item is visible at a time. 5. If this is your first visit be sure to check out the FAQ by clicking the link above. This could have been very useful when using multi select to bind the whole list of selected items to the view model. But we 39 ll also want a property called SelectedState to bind to the selected value so we can capture the state abbreviation selected by the user. Then by setting the viewmodel property to 0 1 automaticly selects the respective ComboBoxItem. In ComboBox Element set the attribute ItemSource quot Binding quot . The multi select option makes it easy to select items and display it with delimiters. Hopefully you can work out your mistakes from this code example. In my normal app the problem I am seeing is that the combobox consistantly changes the property but it is not reflected in the combobox. The intention is to get a ComboBox control s SelectedItem property to bind to an instance of a selected object so that when the SelectedItem is changed all other entities that are bound to it are also updated. TemplateField two way binding for combobox selected item trun_gup posted over 3 years ago I am using a combobox inside a template field but when an item is selected entity linked is not reflected about that. We can then select the appropriate string data as per the requirement. The ComboBox items are custom Currency objects. ItemSource Sep 21 2010 In this post I am going to explain how to persist Selected Item in a Combo box. As a string object is not a Class SelectedItem and SelectedValue are the same. lt ComboBox. lt DockPanel gt . We get data in form of Array. By using a Converter This is a bit more reusable but is not the best for scenario that already needs a converter. When you set the SelectedItem property to an object the ComboBox attempts to make that object the currently selected one in the list. SelectedIndex mylinqdata. I attached project files. The DisplayMember property specifies a source field name whose values are used as item display text. is manually add some items making one of them the default selected item by Using WPF data binding and a custom template we can easily render a list of a pre defined set of options while still giving them the option to manually enter the nbsp Check our quot Selection quot documentation article for the RadComboBox WPF control. Format in Tooltip binding we must create a property in the view model to show our custom data. ToString 1 WPF ComboBox SelectedItem binding After I selected an item from dropdown menu it stopped updating the value of its text property. One approach bound both the ItemsSource and the SelectedValue properties of the Combo box to corresponding properties on ViewModel. OK apr s avoir frapp ma t te contre le mur j 39 ai d couvert pourquoi mon probl me ne pouvait pas se reproduire. Nov 12 2008 DisplayMemberPath is also relatively easy it just tells WPF what to display in the ComboBox. Aug 16 2011 Here DisplayMemberPath helps to display Text in the ComboBox. Resources. In the setter you prompt the user and attempt to cancel the selection by discarding the new selected value. This binding statement sets a path to a property on the overall DataContext for the ComboBox which in my case is actually set through code at the Page object level this. You ask if they are sure they want to do this. You can learn more operations in ComboBox from the following link C ComboBox VB. Mar 26 2012 you don 39 t need the quot Tag quot s if you bind the ComboBox 39 s SelectedItem to a numeric I assume Gender property of your viewmodel. SelectedItem quot Binding RelativeSource RelativeSource TemplatedParent Path SelectedItem quot How can I set the SelectedItem in a ComboBox which is populated by collection of custom objects and also embedded in to a ListView . cs file. This ComboBox is simply populated with a string collection. Text quot and ZoneId quot ComboBoxZone. a ListBox the data binding is by default two way. Selected item to a property and do the validation in the set block. Ok um outro fato estranho Um outro ComboBox com as mesmas propriedades menos SelectedValue est funcionando perfeitamente N o consigo entender o que acontece. . The first ComboBox is for enum type list. This is not reusable. Add reference to A ComboBox displays a text box combined with a ListBox which enables the user to select items from the list or enter a new value. The SelectedItem is bound to a scalar navigation property on the current item. WPF app is built with MVVM such that the combo box s SelectedItem is bound to a property on the ViewModel. The article demonstrates how to bind a ComboBox to a sorted collection of enum values. How to filter dropdown items in WPF editable ComboBoxAdv When selecting an item in either what event do I use to bind to and is there a good guide about doing this lt ComboBox x Name quot cboProductType quot ItemsSource quot Binding ProductType quot DisplayMemberPath quot ProductTypeName quot Grid. The ComboBox binds its SelectedItem property to the ViewModel 39 s SelectedItem property. Set the SelectedValue property to the DataContext column of your choice. Finally the Text of the RadComboBox is updates to match the text of the found item And because in your scenario the item with Content 20 is before the one with Content 2 it is found first and it is selected the text is also updated in order to match the one of the found item. his works fine . ComboBox 1 Items Add . I 39 m trying to set the SELECTEDITEM and or the SELECTED VALUE of combobox in code this. Its purpose is to specify a property of the source object to serve as the visual representation of the combo box item. If I remove the included StdPropertyGrid styles it works OK. When you create a ControlTemplate for a ComboBox your template might contain an ItemsPresenter within a ScrollViewer . I noticed though that if you set the IsEditable true then ComboBox selected value changes along as you select drop down items with the up down arrow. The Itemssource ObservableCollection binds fine But When you select An Item it never even calls the bind I place a Break point at the get statement and it never triggers . A common way to do that is by having the text show an ellipsis at the end. You can easily bind the selected item or the current items but when multi selection comes in the way it becomes harder because the SelectedItems with an 39 s 39 property is not available to binding . Country_Name. but in my case I do not have a binding source ready in my program Perhaps the selected item was at the beginning of the list before but now the selected item might be somewhere in the middle. This means you Continue reading WPF Simple way to use enums as ComboBox items I have this table I use in my project this view Called NewItem and in this view there is two combobox. Then in the TextBox I had to set the Path SelectedItem. Because there is no command property that supports the item selection change. in designer. Nov 13 2017 The ComboBox displays the list of items correctly and I can select one in the UI with no problem. ItemTemplateSelector The control provides a rich set of advanced features which include rich client side API with a comprehensive set of events load on demand mechanism auto complete filtering multi column support highly customizable appearance through skins content template support and much more. lt TextBlock Text quot Binding Source StaticResource myDataSource Path PersonName quot gt You can specify most of the properties of the Binding class this way. That item is an XmlNode object so the list box can be bound to the nodes ChildNodes collection. Window1 quot DataGrid. Recommend c WPF binding to ComboBox SelectedItem when reference not in ItemsSource. You can use it when the SelectionUnit is set to FullRow default otherwise it is null. ComboBox with empty item 3 . Jun 08 2011 The SelectedValue property if set with a value like 1 2 or 3 will force the ComboBox to set the selected index to the value that matches what is put into this property. Change the Background of a selected ListBox Item. Here DisplayMemberPath helps to display Text in the ComboBox. Net 4. Create Data Source and Set it To ComboBox. You will need to bind this property to the EmployeeTypeId property in the Employee object that comes from the DataGrid. string value comboBox. Equals method of the MyItem class so that it returns true if two item s have the same data not just the same memory reference. You can also bind the currently selected item in the ComboBox to an instance of an object in code. If you select an item in a listbox it gets the default selection color usually blue as background. ItemsSource data Make the first item selected. In Reason 2. SelectedItem ComboBox Bug SelectedIndex SelectedValue Binding Bug WPF ComboBox ComboBoxItems . Filtering preserves the selected item if that selection remains in view after the filtering. 10 May 2010 Name being displayed in the ComboBox items. Set SelectedItem as Window Title. August 2011 Nice article. Editing. Dec 18 2018 My WPF app has a ComboBox which allows users to select a currency from a list of options. var comboBox sender as ComboBox Assign the ItemsSource to the List. First we take simple binding so create one WPF Application and put the combo box in it. e. How to add a void item into nbsp SelectedValue quot Binding Value Mode TwoWay quot gt . To set the available values the MVVM way you typically have to databind the ItemsSource Property to a collection. A problem you often meet when using MVVM is to get the selected items of an items control especially Listbox. gt SelectedItem quot Binding ComoSelectedValue quot Width quot 120 quot Height quot 22 quot Grid. Jul 24 2015 Combobox binding in WPF. UpdateSourceTrigger SelectedItem . 222 Check Jun 24 2019 Basically the ViewModel that is bound to each row would contain both the IEnumerable to be bound to ItemsSource and the property to be bound to the selected item via SelectedValuePath. Would you check this Thank you. SelectedItem property is read only and non bindable. The ComboBox allows the user to select an item from a drop down list or optionally to enter new text in the text box of the control. In the above example the ItemTemplate contains a single TextBlock element. Jan 08 2009 Then a specific enum SampleEnum is set to MethodParameter attribute. SelectedItem cmbBudgetYear. The basic View is a ListBox with the selection mode set to extended so we can select multiple items using ctrl shift click or the keyboard equivalents . ListBoxItem has both Content and Tooltip property. Column quot 1 quot Margin quot 111 72 348 164 quot gt Select all Open in new window Tag c wpf xaml mvvm wpf controls. 30 Nov 2018 Now for binding the combo box in WPF MVVM I will explain two methods one and it has two properties 39 Id 39 and 39 Name 39 with get and set method. Bom por enquanto o WPF consegue achar o OwnerTypeId e quando eu troco de item ele bate apenas 2 vezes. AFAIK this is default behavior of all Selector descendants which is rather obvious settings SelectedItem isn 39 t only a data changing this also should lead to some visual consequences like generating an item container and re drawing item all those things manipulate Binding ComboBox SelectedItem using MVVM Furthermore it is pointless using your displayPeriod property as the WPF Framework would call the ToString method automatically for objects that it needs to Cascading ComboBoxes in WPF using MVVM When a user is selecting an item from a cascading ComboBox another ComboBox gets automatically populated with items based on the selection in the first one. TO bind the datagrid with data we need to set its ItemsSource property to a collection which implements IEnumerable interface. Once downloaded unzip the file it will extract 39 WPFToolkit. A DataGrid is a table. Option one would look like this Oct 30 2016 The longer I work with WPF the more I notice how many things it s missing. Jun 20 2007 Recently Karl Shifflett a budding WPF developer and author of articles about WPF posted an article on CodeProject. As this is rarely the desired behavior RadComboBox exposes a DisplayMemberPath property. DataContext project So all controls on the entire page by default bind to a Project object and this includes the ComboBox. Define the style in the application scope. We don 39 t check only the beginning of the text but the whole content. If the item selected by the user changes the current item will change. ondate quot quot 2 Answers 2 Accepted Accepted Accepted In short you can 39 t set SelectedItem to the value that is not in ItemsSource. Apr 17 2015 lt ComboBox EditValue quot Binding SelectedItem UpdateSourceTrigger PropertyChanged quot ItemsSource quot Binding SourceList quot gt In this way we have binded a simple List lt string gt in out View. it still shows an empty item when loaded. Extended. 6. UpdateTarget . But it 39 s not a property of the DataContext. In this article I will take you through the various scenarios in which the combobox can be binded to the datasource in MVVM way. show this seems to work but there is like 10 chance that the combobox is loaded but the selecteditem is blank although the itemsource was populated and selecteditem was set to proper id. Master detail binding scenario Use two converters one on the ItemsSource to add in the null place holder object and one on SelectedItem to convert the place holder to Nothing. I can keep that one selected or select another one it doesn 39 t matter Now i close every process instance and I click Refresh button again. Add quot typeObjCollection quot this. But the thing is I am using list box to display Jan 24 2018 A lot of times in GUIs we use ComboBoxes to let the user choose one of several options. Henning M. A ComboBox is a single select ItemsControl whose full list of available items is usually presented in a dropdown list below a textual representation of the selected item. This is so that the UserControl knows to look at itself to locate bindings. Data binding support can bind with various data source types and manage the display and selected values. Next set the DisplayMemberPath which is used to dispaly the Text to the user and The SelectedValuePath which is used to save the key Feb 03 2015 Now you you have something you can data bind to. May 31 2015 Over here we used ItemTemplate property of the WPF ComboBox to bind the image and text into ComboBox. Even if you specify a custom data template. Apr 28 2011 Trying to synchronize the SelectedItem between ViewModel und ComboBox in . For that we create DataTemplate in Window resources. SelectedValuePath Sets the path in SelectedItem for the SelectedItem i. The most efficient way to bind an Enum list to a ComboBox with the Description Attribute with WPF MVVM style. Show quot Allow nbsp 28 Dec 2018 WPF Combobox Selected Value ID ermitteln Task How to determine the Wert at would like find out with which number item has items were nbsp 10 Dec 2018 Combo box option in WPF. What this does accomplish is it works around the nagging quot bug quot of the WPF ComboBox which happens when you select an item but are bound to the Text property the ComboBox will clear the selected text from the TextProperty. See Also. C sharpcorner. zip Commented on 19. When you select an agency name from the combo box the SelectedItem property returns the Agency data item that corresponds to the selected Name. SelectedValue is bound using a property binding of quot Binding ColorString quot . Status loom. Pastebin. This is my sample XAML code for combobox lt ComboBox x Name quot cboPerson quot SelectedIndex quot 0 quot ItemsSource quot Binding PersonCollection quot SelectedItem quot Binding SelectedPerson Mode TwoWay quot gt All I want to do is to concatenate a string say 39 Default 39 to the currently selected item in the combo box. An enum property is a natural fit to store the selected value in the viewmodel via databinding. Here persisting is not db level persistence. Wpf Combobox Set Selected Item AccountID will be the value you 39 re looking for. Bind combobox in WPF C Corner. One of the things I m trying to get used to is Data Binding to the WPF UI. Data bindings is to separate the GUI from the data. If User has already a member named Name then what 39 s Name1 in parent class for . Status The issue is that your items are ComboBoxItems not strings. References Apr 30 2014 To be able to change the background colour of a ComboBox in a WPF application running on Windows 8 you have to modify its default control template. Si le type d 39 item list est une classe pour une raison quelconque le SelectedItem est d fini par WPF null mais si c 39 est un type de valeur il ne l 39 est pas. WPF toolkit can be downloaded from here. Jun 13 2017 Binding combo box to some data means just setting the data context of the combo box to a list of values. this. The code example in this tutorial demos how to add list box items add items to a ListBox remove items from a ListBox and bind a ListBox to a data source. I found that there does not seem to be one official way of doing this. The easiest way to achieve this is to use DataContext If the item that is selected is not the same instance that is contained in the List you must override Equals in the CustomObject to let the ComboBox know that it is the same object. I have tried using SelectedItem doesn 39 t help Using Selected Value Path Aug 20 2011 To work around this you can either use the ComboBox s SelectedValue and SelectedValuePath to set the SelectedItem by Value instead of by Item. The collection of objects in the collection are used to define rows in the datagrid. SelectedItem as string nbsp WPF MVVM ComboBox SelectedItem or SelectedValue not working Me thinks my selecteditem is getting set before the binding of the combobox is done. The Binding was to the property StreetAddress set as Mode TwoWay so that the value of the property on the row s data item would get updated when a user changed the selection in the combobox for that row. Lets check the video and keep enjoy. Watermark support and template customization makes the control more flexible. For example assume each item is an instance of Person which has Name property and the property path is quot Name quot . We also specify how users edit its data and how it visually renders that data. You can also bind the currently selected item in the ComboBox to an instance of an object in code. Apart from that we will also go through the three properties which the developers are most confused with i. Here is the best example and tutorial ever Currently working on MultiSelectComboBox custom control derived from combobox class there is a listbox with multiselection mode inside the combobox template. set _comoselectedValue value NoticeMe quot ComoSelectedValue quot . Common properties of WPF ComboBox In the below example I am creating a simple combobox. If it 39 s the same instance maybe it 39 s only a simple thing such as setting the BindingMode to TwoWay SelectedItem quot Binding Path CustomSettingProperty Mode TwoWay quot How can I make a ComboBox to display the selected item I have following ComboBox declared in XAML lt ComboBox Margin quot 4 0 2 0 quot ItemsSource quot Binding YAxes quot SelectedItem quot Binding SelectedYAxis Mode TwoWay quot DisplayMemberPath quot AxisTitle quot SelectedValuePath quot AxisTitle quot gt Code behind An implementation of using the WPF Combo Box using MVVM patterns. Mar 29 2019 The ListView needs to bind to the SelectedItem property of the combobox. If a more complex value is required this can be set using the ComboBox. In addition to display and selection functionality the ComboBox also provides features that enable you to efficiently add items to the ComboBox. You should see that the display of the items comes from the ToString method without your displayPeriod property. This is because we want to bind to properties that are located in the code behind which means it needs some way to reference itself. WPF Bind tab selected unselected event to method Multiple Inheritance want to extend a class that Check ComboBox Xceed WPF Toolkit How to get sho WPF Vb. The collection the developer usually wants the user to select from in the combo will be an ObservableCollection lt RowViewmodel gt which is a Public property of that ViewModel. Create a user control that acts as a wrapper around the combo box control. This is just an example of binding the ICommand interface from RelayCommand. There are actually several ways to deal with this Sep 15 2011 SelectedItem This is the Country Entity. Sep 26 2008 Yesterday I was looking at WPF ListBox controls and ran into an interesting low level problem. SelectedItem MessageBox. WPF ComboBox with Editable Option and Advanced features. We will need to controls for this sample Combo box Color picker control We will use WPF toolkit for color picker control. We also have a button that we d like to perform an action on the selected items. I 39 d suggest you take a look at the followng blog post for more detailed instructions Data binding the ComboBox. Feb 13 2019 It may appear that there s a lot going on here but there really isn t. When an item is selected in ComboBoxAdv you can get their information using SelectedItem or SelectedValue property. If the ComboBox 39 s SelectedItem binding is correct when the window shows the 2 comboboxes should have first item in the list selected I bet that currently with your code the 2 comboboxes have no item selected when the window shows up . 25 Apr 2010 User says No . Text. the text selected from the dropdown I presume i need to do some binding on the Text property but really not sure where Set Combobox SelectedValue from Code Behind In WPF. Or maybe not the reason behind this is not entirely clear to me. Don 39 t use ComboBox. All the necessary logic could be handled within the user control. To solve this bind the SelectedItem property of the DataGrid to the SelectedItem property of the ComboBox as shown in the following code. Add Code behind Code To access the data item of the selected row use the SelectedItem property. To do this open the Visual Studio toolbox locate the quot DX Common Controls quot tab choose the ComboBoxEdit toolbox item and drop it onto the window. The xaml looks like this lt ComboBox x Name quot combobox quot SelectedValue quot Binding The problem is that the selected value won 39 t show up in the It should be internally set to the corresponding DataTemplate specified by nbsp 30 Jun 2018 Let 39 s see how we can get SelectedItem from a WPF Listbox using MVVM methodology. Like so lt Apr 27 2016 in this WPF Video tutorial i will show you How to bind ComboBox with Enum DataType. When the user selects a set of settings to view what options were saved for that set the multiselect combo boxes will not show what options were selected in that set. With this binding you use a GenderToDisplayConverter which converts from 0 1 to 39 Male 39 39 Female 39 and back . In the previous examples in this series the item containers have mysteriously or perhaps magically been created without our knowledge. May 24 2011 Binding ComBobox SelectedValue Windows Presentation Foundation WPF Windows Presentation Foundation WPF Now you should see the selected item in the combo Feb 17 2011 Get the Text and Value of Selected ComboBox Item private void btnZone_Click object sender RoutedEventArgs e MessageBox. the codebehind simply calls Product List class to return the product collection that I bind the combobox to. SelectedValue. Run the code in debug until Window pops up the place break point on Property Width Angle 39 s set It may or may not coincide with the selected row and SelectedItem respectively. The SelectedValuePath tells the ListBox which property of the SelectedItem should be used for the SelectedValue. As we cannot use String. XAML lt ComboBox ItemsSource quot Binding ItemsCollection quot SelectedItem nbsp WPF Combobox A combobox is a selection control that combines a non editable textbox and a drop down listbox Gets or sets the index of the selected item. For multiple selected items use SelectedItems property. Note After finding the fix it seems an obvious solution because it makes sense that WPF runtime would not know what property to use for selection because it is based on a data Mar 20 2012 The current item selected in a ListBox is the SelectedItem and the value of this item is the SelectedValue. These objects have a Name property which is used as the text in the ComboBox items. wpf combobox set selected item binding