TreeView With Checkbox,when Double Click parent node,show Exception

[funtim41]

  <TreeView.ItemTemplate>
      <HierarchicalDataTemplate ItemsSource="{Binding CommandMethodNames}">
          <StackPanel Orientation="Horizontal">
              <CheckBox />
              <TextBlock Margin="5" Text="{Binding Name}" />
          </StackPanel>
      </HierarchicalDataTemplate>
  </TreeView.ItemTemplate>

i use this code in wpf,when i double click parent node,show  this Exception

VS version:17.12.3

CAD 2024

[funtim41]

ok i get it .Some object return null. And How can i delete this question

[essam-salah · Accepted solution]

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@funtim41 wrote:

ok i get it .Some object return null. And How can i delete this question

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hi, i don't think there is a need to delete the thread just write the solution and mark the thread as solved