Conditional show context menu based on zoom level

[Jon]

Hi..
How can I conditional show/enable a context menu when the zoom level is a certain value.
I'd like to add a context menu to a pushpin when the pushpin is in view and zoomlevel = 15
thanks again

[Andrey]

Hi Jon,

I think you just can handle the RadMap.MouseRightButtonUp event. When the event occurs then you can check the zoom level and the pushpin which has been clicked. And when the zoom level does not satisfy a condition then you can mark event as handled using the Handled property of event arguments. It prevents showing of a context menu.
The sample code is below.

<telerik:RadMap x:Name="RadMap1" ZoomLevel="14" Center="40,-100" MouseRightButtonUp="MapMouseRightButtonUp">
    <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:RadMap.Provider>
        <telerik:OpenStreetMapProvider />
    </telerik:RadMap.Provider>
    <telerik:InformationLayer x:Name="InformationLayer">
        <telerik:Pushpin telerik:MapLayer.Location="40,-100" />
    </telerik:InformationLayer>
</telerik:RadMap>

private Pushpin clickedPushpin;

private void MapMouseRightButtonUp(object sender, MouseButtonEventArgs e)
{
    if (this.RadMap1.ZoomLevel == 15)
    {
        Location location = Location.GetCoordinates(this.RadMap1, e.GetPosition(this.RadMap1));
        IEnumerable<object> list = this.InformationLayer.GetItemsInLocation(location);
        foreach (object item in list)
        {
            Pushpin pushpin = item as Pushpin;
            if (pushpin != null)
            {
                this.clickedPushpin = pushpin;
                return;
            }
        }
    }

    e.Handled = true;
}

All the best,
Andrey Murzov
the Telerik team