Set focus on the selected item when tabbing in a WPF ListBox

Question

I have a ListBox in my xaml file which looks like this:

<ListBox Name="collateralPledgedListbox" 
         Style="{StaticResource USB_ListBox}" 
         Margin="0,0,5,39" Width="Auto"  
         ItemsPanel="{StaticResource USB_ListBox_ItemPlacement}"  
         TabNavigation="Local"  
         ItemContainerStyle="{StaticResource USB_ListBoxContainer}"  
         ItemsSource="{Binding Model.CollateralPledgedByMarriedIndividuals, Mode=TwoWay}"  
         ItemTemplate="{StaticResource USBcollateralColSumColInfoDataTemplate}"  
         ScrollViewer.HorizontalScrollBarVisibility="Hidden"> 
</ListBox>

This ListBox shows a vertical scroll bar when there are number of rows exceed the provided space. I am not able to show the currently selected row to the user while tabbing through the controls within the ListBox.

I am using C# as my language. Any help on this would be appreciated.

score 0 · Answer 1 · edited May 23 '17 at 10:34

0

Sounds like all you have to do is set your focus and refresh your view. Have you tried doing what this answer suggests?

private void Button_Click(object sender, RoutedEventArgs e)
{
  MainListBox.SelectedItem = MainListBox.Items[3];
  MainListBox.UpdateLayout(); // Pre-generates item containers 

 var listBoxItem = (ListBoxItem) MainListBox
      .ItemContainerGenerator
      .ContainerFromItem(MainListBox.SelectedItem);

  listBoxItem.Focus();
}

edited May 23 '17 at 10:34

Community

1
1

answered Aug 23 '16 at 22:29

Noctis

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Thanks for the reply Noctis but this solution would not work as I do not know the index of the selected item. – Kunal Nair Sep 19 '16 at 16:59
could you sketch up your issue? I'm not sure what / why is the problem. – Noctis Sep 19 '16 at 23:13

Set focus on the selected item when tabbing in a WPF ListBox

1 Answers1