MapPolygon and RadContextMenu

[Michael]

Is it possible to put a RadContextMenu on a MapPolygon? I have tried and the menu does not show up on right-click.

Thanks,
Mike

[Andrey]

Hi Michael,

In fact the map shape is not a visual object. It is a data object. So, you can use the RadContextMenu only with visual representation of the MapPolygon. You can get it using the InformationLayer.ItemContainerGenerator.
The sample code is below.

<Window x:Class="ContextMenu.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
        Title="MainWindow" Height="600" Width="800">
    <Grid>
        <telerik:RadMap x:Name="radMap"
                        Center="40,-100"
                        ZoomLevel="7">
            <telerik:RadMap.Providers>
                <telerik:OpenStreetMapProvider />
            </telerik:RadMap.Providers>
            <telerik:InformationLayer Name="informationLayer">
                <telerik:MapPolygon x:Name="polygon"
                                    Fill="Blue"
                                    Stroke="Yellow"
                                    StrokeThickness="1"
                                    Points="40,-100 42,-101.5 42,-102 40,-101 40,-100">
                    <telerik:RadContextMenu.ContextMenu>
                        <telerik:RadContextMenu>
                            <telerik:RadMenuItem Header="Menu Item 1" />
                            <telerik:RadMenuItem Header="Menu Item 2" />
                            <telerik:RadMenuItem Header="Menu Item 3" />
                        </telerik:RadContextMenu>
                    </telerik:RadContextMenu.ContextMenu>
                </telerik:MapPolygon>
            </telerik:InformationLayer>
        </telerik:RadMap>
    </Grid>
</Window>

using System;
using System.Windows;
using System.Windows.Controls.Primitives;
using Telerik.Windows.Controls;

namespace ContextMenu
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();

            this.informationLayer.ItemContainerGenerator.StatusChanged += this.ItemContainerGenerator_StatusChanged;
        }

        private void ItemContainerGenerator_StatusChanged(object sender, EventArgs e)
        {
            if (this.informationLayer.ItemContainerGenerator.Status == GeneratorStatus.ContainersGenerated)
            {
                FrameworkElement container = this.informationLayer.ItemContainerGenerator.ContainerFromItem(this.polygon) as FrameworkElement;
                if (container != null)
                {
                    this.informationLayer.ItemContainerGenerator.StatusChanged -= this.ItemContainerGenerator_StatusChanged;
                    var menu = RadContextMenu.GetContextMenu(this.polygon);
                    RadContextMenu.SetContextMenu(container, menu);
                }
            }
        }
    }
}

Regards,
Andrey Murzov
Telerik