I am trying to use context menu in a listbox to run some come code.that require data from which item it originated.the click event context menu item shows msg but i found that it doent not access the originating listview item .
<Canvas x:Name="LeftCanvas" Grid.Column="0" Grid.Row="1" Margin="5,0,0,0">
<StackPanel>
<TextBlock Text="Unseated Guests" Background="Blue" Foreground="White" FontFamily="Verdana" FontSize="11" FontWeight="Bold" Height="17" Width="150" HorizontalAlignment="Left" TextAlignment="Center" Padding="0,4,5,2"></TextBlock>
<ListBox x:Name="UnseatedPersons" ItemsSource="{Binding}" Height="218" Width="150" BorderBrush="Blue" BorderThickness="2" HorizontalAlignment="Left" Padding="3,2,2,2" src:FloorPlanClass.DragEnabled="true" MouseEnter="UnseatedPersons_MouseEnter"
MouseLeave="SourceListBox_MouseLeave">
<ListBox.ItemTemplate>
<DataTemplate>
<DockPanel>
<DockPanel.ContextMenu>
<ContextMenu>
<MenuItem Header="Archive Info" Click="bt_click" />
<MenuItem Header="Guest Info" />
</ContextMenu>
</DockPanel.ContextMenu>
<Image Name="imgPerson" Source="{Binding ImagePath}" />
<TextBlock Name="txtPersonName" Text="{Binding PersonName}" Padding="2,4,0,0" />
</DockPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</StackPanel>
</Canvas>
C#:
void bt_click(object sender, RoutedEventArgs e)
{
MessageBox.Show("my message");
}
Use the sender by casting them to MenuItem
. Like:
void bt_click(object sender, RoutedEventArgs e)
{
MenuItem originalItem = (MenuItem)sender;
MessageBox.Show(string.Format("clicked from \"{0}\"", originalItem.Name));
}
MenuItem
you clicked. ContextMenu
PlacementTarget
of the ContextMenu
will be the DockPanel
. DockPanel
will have the ListBoxItem
as an ancestor in the Visual Tree So to get the ListBoxItem
in the click event you can use something similar to this
private void bt_click(object sender, RoutedEventArgs e)
{
MenuItem clickedMenuItem = sender as MenuItem;
ContextMenu contextMenu = clickedMenuItem.Parent as ContextMenu;
DockPanel dockPanel = contextMenu.PlacementTarget as DockPanel;
ListBoxItem listBoxItem = GetVisualParent<ListBoxItem>(dockPanel);
MessageBox.Show(listBoxItem.ToString());
// Update. To display the content of the ListBoxItem
MessageBox.Show(listBoxItem.Content.ToString());
}
public static T GetVisualParent<T>(object childObject) where T : Visual
{
DependencyObject child = childObject as DependencyObject;
// iteratively traverse the visual tree
while ((child != null) && !(child is T))
{
child = VisualTreeHelper.GetParent(child);
}
return child as T;
}
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