How do I implement a "mouse double click" for a ListBox?

Question

This xaml code attempts to implement a "mouse double click" for a ListBox "list of cities". xaml

<ListBox x:Name="gLBxCities" Margin="10,0,10,10" Foreground="#0000FF" >

xaml.cs

private

The Compiler -> The member "Handler" is not recognized or is not accessible. I'm not sure of where Handler should be placed?

Answer 1

This approach seems to work:

<ListBox x:Name="gLBxCities" . . .>
    <ListBox.Resources>
        <Style TargetType="ListBoxItem">
            <EventSetter Event="MouseDoubleClick" Handler="MyHandler"/>
        </Style>
    </ListBox.Resources>
    
</ListBox>

private void MyHandler( object sender, MouseButtonEventArgs e )
{

}

Answer 2

Hi,@bhs67 . Welcome to Microsoft Q&A.
To handle a "mouse double click" event in a WPF ListBox, you could use the MouseDoubleClick event and define a corresponding event handler in your code-behind (.xaml.cs) file. Here's an example:

<ListBox x:Name="gLBxCities" Margin="10,0,10,10" Foreground="#0000FF" MouseDoubleClick="gLBxCities_MouseDoubleClick" >
    <ListBoxItem >q</ListBoxItem>
    <ListBoxItem >s</ListBoxItem>
    <ListBoxItem >4</ListBoxItem>
</ListBox>

Codebehind:

  private void gLBxCities_MouseDoubleClick(object sender, MouseButtonEventArgs e)
    {
                 MessageBox.Show("gLBxCities");
    }

---

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.