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Asked: 2026-05-11T06:10:09+00:00

I have the following DataTemplate in a Listbox <ListBox Grid.Column=1 Grid.Row=2 ItemsSource={Binding People} SelectedItem={Binding

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I have the following DataTemplate in a Listbox

<ListBox Grid.Column='1' Grid.Row='2' ItemsSource='{Binding People}' SelectedItem='{Binding SelectedPerson}'> <ListBox.ItemTemplate>     <DataTemplate>         <TextBlock OverridesDefaultStyle='True'                Background='{x:Null}'                Margin='0'                Padding='0'                IsHitTestVisible='True'                Text='{Binding TargetNullValue=None}'         />     </DataTemplate> </ListBox.ItemTemplate>

This works perfectly, displaying ‘None’ in place of any Null (Nothing) values in the bound list. The problem is that I can’t click on the Null values to select them. Selection with the keyboard works perfectly, just not with a mouse. What can I do to make the Null values in the list act just like any other value?

Edit: I should also add that I can change the TextBlock’s background to Red and it displays just like the others so I don’t think it’s a case of having nothing to click on. I’ve also looked at it with Snoop and I don’t see any attributes in the visual tree that are different between a Null item and a normal item.

Edit 2: I should add that People is actually a class representing a database table. It uses the ToString method to display the People objects by default. I get the same effect if I bind to the proper field using the Path option and I thought this would be easier to read.

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1 Answer

  1. If you are looking for a solution, maybe you can find what you want here: Why can't I select a null value in a ComboBox?

    Combobox has the same behavior as ListBox.

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