Help with ListBox Binding

Question

This is a distillation of a problem I am having with a larger application.

<Window x:Class="MainWindow"
    ....
    <ListBox
        ItemsSource="{Binding Source=Widgets}"
	    SelectedValuePath="WidgetID"
	    DisplayMemberPath="Name"
    </ListBox>
</Window>

and

Class MainWindow
    Public Property Widgets as new ObservableCollection(Of Widget)
	
	Public Sub New
	    InitializeComponent()
		DataContext = Me
	End Sub
	....
End Class

This causes Binding Path errors because the DisplayMemberPath ("Name") is not a member of Widgets. However I don't know how to fix the problem.

Also note that this is NOT Visual Basic for Applications but rather VB.NET.

Answer 1

Hi,@Roger Schlueter. Welcome to Microsoft Q&A. What is the code of your Widget class? You could try to refer to the sample code below to see if it helps you.

  <ListBox ItemsSource="{Binding Widgets}" 
                 SelectedValuePath="WidgetID" 
                 DisplayMemberPath="Name" />

Codebehind:

Imports System.Collections.ObjectModel

Class MainWindow
    Public Property Widgets As New ObservableCollection(Of Widget)()

    Public Sub New()
        InitializeComponent()
        ' Add some sample data to the collection
        Widgets.Add(New Widget() With {.WidgetID = 1, .Name = "Widget 1"})
        Widgets.Add(New Widget() With {.WidgetID = 2, .Name = "Widget 2"})
        ' Add more items as needed
        DataContext = Me
    End Sub
End Class
Public Class Widget
    Public Property WidgetID As Integer
    Public Property Name As String
    ' Other properties
End Class

The result:

If the problem still exists, can you share more code with me for analysis?

---

If the answer is the right solution, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.