RadMenuItem can only bind two times？

[J]

<UserControl x:Class="RadControlsSilverlightApp1.MainPage"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
        mc:Ignorable="d" d:DesignWidth="640" d:DesignHeight="480">
    <Grid x:Name="LayoutRoot">
        <telerik:RadMenu Margin="46,132,58,0" VerticalAlignment="Top">
            <telerik:RadMenuItem Header="Item 1">
                <telerik:RadMenuItem Header="Sub Item 1" Click="RadMenuItem_Click"/>
                <telerik:RadMenuItem Header="Sub Item 2" Click="RadMenuItem_Click_1"/>
            </telerik:RadMenuItem>
            <telerik:RadMenuItem x:Name="radMenuItem" Header="Item 2">
                <telerik:RadMenuItem Header="Sub Item 3"/>
                <telerik:RadMenuItem Header="Sub Item 4"/>
                <telerik:RadMenuItem Header="Sub Item 5"/>
            </telerik:RadMenuItem>
            <telerik:RadMenuItem Header="Item 3" IsEnabled="{Binding IsEnabled, ElementName=radMenuItem}">
                <telerik:RadMenuItem Header="Sub Item 3"/>
                <telerik:RadMenuItem Header="Sub Item 4"/>
                <telerik:RadMenuItem Header="Sub Item 5"/>
            </telerik:RadMenuItem>
        </telerik:RadMenu>

    </Grid>
</UserControl>

using System.Windows.Controls;

namespace RadControlsSilverlightApp1
{
    public partial class MainPage : UserControl
    {
        public MainPage()
        {
            InitializeComponent();
        }

        private void RadMenuItem_Click(object sender, Telerik.Windows.RadRoutedEventArgs e)
        {
            radMenuItem.IsEnabled = false;
        }

        private void RadMenuItem_Click_1(object sender, Telerik.Windows.RadRoutedEventArgs e)
        {
            radMenuItem.IsEnabled = true;
        }
    }
}

work.gif is the run results

[Rosen Vladimirov]

Hi,

You have to use TwoWay Binding for IsEnabled property. This is by design and whenever you want to use binding for this property, it should be TwoWay.

<telerik:RadMenuItem Header="Item 3" IsEnabled="{Binding IsEnabled, ElementName=radMenuItem, Mode=TwoWay}">

Hopefully this helps.

Regards,
Rosen Vladimirov
Telerik

[J]

Perfect!Rosen Vladimirov,You're right, thank you!