By setting "ContextMenuService.IsEnabled=False" in your button and adding the code below to your button click this should resolve that issue. In the example below you'll see how to setup your button to display a menu when clicked. Have Fun ☺
< Button x:Name="btnMenu" Content="Menu" HorizontalAlignment="Left" Height="30" ContextMenuService.IsEnabled="False" Width="100" Click="btnMenu_Click">
< Button.ContextMenu>
< ContextMenu>
< MenuItem Header="Menu 1" />
< MenuItem Header="Menu 1" />
< MenuItem Header="Menu 1" />
< MenuItem Header="Menu 1" />
< Separator />
< MenuItem Header="Second Menu">
< MenuItem Header="Menu 2" />
< MenuItem Header="Menu 2" />
< MenuItem Header="Menu 2" />
< MenuItem Header="Menu 2" />
< Separator />
< MenuItem Header="Third Menu" />
< / MenuItem>
< / ContextMenu>
< / Button.ContextMenu>
< / Button>
private void btnMenu_Click(object sender, RoutedEventArgs e)
{
(sender as Button).ContextMenu.IsEnabled = true;
(sender as Button).ContextMenu.PlacementTarget = (sender as Button);
(sender as Button).ContextMenu.Placement = System.Windows.Controls.Primitives.PlacementMode.Bottom;
(sender as Button).ContextMenu.IsOpen = true;
}
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