WPF Context menu disappears when Key.App is released

问题

I got a problem with context menu when i open through "Appkey" please refer this link for same issue for reference. Here i did't handle the event through keyUp or Keydown, but through XAML Commandbinding and Inputbinding i'm opening the context menu in codebehind, my problem is how to make context menu remain open even when the key is released.

  <UserControl.CommandBindings>
         <!--Custom Commands-->
        <CommandBinding Command="my:ThumbnailImages.CustomCommandContextMenu" Executed="OpenContextMenu_Executed" />
    </UserControl.CommandBindings>
    <UserControl.InputBindings>
        <KeyBinding Command="my:ThumbnailImages.CustomCommandContextMenu" Key="Apps"/>
    </UserControl.InputBindings>

<ListBox.ContextMenu>
   <ContextMenu Name="ZoneIformationList" StaysOpen="true" Background="WhiteSmoke">
      <ContextMenu.BitmapEffect>
         <BitmapEffectGroup/>
      </ContextMenu.BitmapEffect>
      <MenuItem Header="Edit" Name="EditNutritionContextMenu"  />
      <MenuItem Header="Remove" Name="RemoveNutritionContextMenu" />
   </ContextMenu>
</ListBox.ContextMenu>

  Private Sub OpenContextMenu_Executed(ByVal sender As System.Object, ByVal e As System.Windows.Input.ExecutedRoutedEventArgs)

        If IsNothing(MyList.ContextMenu) = False Then
            MyList.ContextMenu.PlacementTarget = MyList
            MyList.ContextMenu.IsEnabled = True
            MyList.ContextMenu.IsOpen = True

            e.Handled = True
        End If
    End Sub
End Class

来源：https://stackoverflow.com/questions/18332120/wpf-context-menu-disappears-when-key-app-is-released

标签

wpf

listbox

keyboard

contextmenu

shortcut