Check/uncheck bug in context menu

[hwsoderlund]

I'm trying to make it so that only one menu item can be checked at any one time. Sort of like radio buttons. But when I uncheck menu items programmatically the change doesn't show until I mouse over the items. Below is some sample code that demonstrates the bug. To recreate:

• Click the button to open the menu
• Check the first item, then check the second
• Mouse over the first item to see check mark disappear

<UserControl x:Class="SilverlightApplication17.Page"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:teleriknav="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.Navigation"
             xmlns:telerikbase="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls"
             xmlns:telerikinput="clr-namespace:Telerik.Windows.Controls;assembly=Telerik.Windows.Controls.Input"
             Width="400"
             Height="300">
    <Grid x:Name="LayoutRoot"
          Background="White">

        <Button Content="Open menu"
                Width="100"
                Height="30">
            <teleriknav:RadContextMenu.ContextMenu>
                <teleriknav:RadContextMenu StaysOpen="True"
                                           ClickToOpen="True"
                                           EventName="Click"
                                           Placement="Bottom">
                    <teleriknav:RadContextMenu.Items>
                        <teleriknav:RadMenuItem Header="Item 1"
                                                IsCheckable="True">
                        </teleriknav:RadMenuItem>
                        <teleriknav:RadMenuItem Header="Item 2"
                                                IsCheckable="True">
                        </teleriknav:RadMenuItem>
                        <teleriknav:RadMenuItem Header="Item 3"
                                                IsCheckable="True">
                        </teleriknav:RadMenuItem>
                    </teleriknav:RadContextMenu.Items>
                </teleriknav:RadContextMenu>
            </teleriknav:RadContextMenu.ContextMenu>
        </Button>

    </Grid>
</UserControl>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using Telerik.Windows;
using Telerik.Windows.Controls;

namespace SilverlightApplication17
{
    public partial class Page : UserControl
    {
        public Page()
        {
            InitializeComponent();

            this.AddHandler(RadMenuItem.CheckedEvent, new RoutedEventHandler(RadMenuItem_CheckedChanged));
            this.AddHandler(RadMenuItem.UncheckedEvent, new RoutedEventHandler(RadMenuItem_CheckedChanged));
        }

        private void RadMenuItem_CheckedChanged(object sender, RoutedEventArgs e)
        {
            var radE = e as RadRoutedEventArgs;
            if (radE == null || radE.OriginalSource == null)
                return;

            var item = radE.OriginalSource as RadMenuItem;

            if (item.IsChecked)
            {
                //Uncheck all the other items

                var menu = item.ParentOfType<RadContextMenu>();
                menu.Items.ToList().ForEach(obj =>
                {
                    var item2 = menu.ItemContainerGenerator.ContainerFromItem(obj) as RadMenuItem;
                    if (item2.IsChecked && item2 != item)
                    {
                        item2.IsChecked = false;
                    }
                });
            }

        }
    }
}

[Hristo]

Hello Henrik,

I can confirm that this is a bug that will be fixed in the next service pack.
If this is show-stopper for you just open a support ticket and I will send you the hotfix.
Thank you for reporting this. I've updated your telerik points.

Best wishes,
Hristo
the Telerik team

Check out Telerik Trainer , the state of the art learning tool for Telerik products.

[hwsoderlund]

Thanks for adressing this. It's not exactly a show-stopper, but it doesn't look very good either. I've opened up a ticket to get the hotfix.

[hwsoderlund]

Sorry, I just realized I posted this in the wrong forum. If anyone is confused, this thread should be in the Silverlight forum.