ContextMenu on MapPolylines does not work

[Padmanabhan]

Hi,

   I'm trying to add Context Menu to MapPolylines and somehow it is not displaying the context menu. My requirement is to Right Click on MapPolyline and select Hide Polyline from Context Menu. Please see the code below:

Registering this event when drawing Polyline

 

 

private void techpolyline_MouseRightButtonDown(object sender, MouseButtonEventArgs e)

 

 

{

 

 

 

MapPolyline rightClickPolyline;

 

 

 

 

ContextMenu mainMenu = new ContextMenu();

 

 

mainMenu.Background =

 

Brushes.LightBlue;

 

 

mainMenu.Height = 50;

 

mainMenu.Width = 120;

 

 

 

MenuItem baseItem = new MenuItem();

 

 

baseItem.Width = 120;

 

baseItem.Header =

 

"Select Action";

 

 

baseItem.Background =

 

Brushes.Blue;

 

 

baseItem.Foreground =

 

Brushes.White;

 

 

baseItem.FontWeight =

 

FontWeights.Bold;

 

 

mainMenu.Items.Add(baseItem);

 

 

 

 

 

MenuItem hidepolygonItem = new MenuItem();

 

 

hidepolygonItem.Width = 120;

 

hidepolygonItem.Header =

 

"Hide Polyline";

 

 

mainMenu.Items.Add(hidepolygonItem);

 

 

 

//hidepolygonItem.PreviewMouseLeftButtonDown +=new MouseButtonEventHandler(hidepolygonItem_PreviewMouseLeftButtonDown);

 

 

 

if (sender.GetType() == typeof(MapPolyline))

 

 

{

 

  rightClickPolyline = (

 

MapPolyline)sender;

 

 

  rightClickPolyline.ContextMenu = mainMenu;

 

}

 

}

I use the same logic to MapPinPoint items and Pushpin items and it works. Any help is appreciated.

Regards!!
Paddy

[Andrey]

Hi Padmanabhan,

Presently, the map shape objects do not support context menu. But you can use another technique to show a context menu:

<telerik:RadMap x:Name="RadMap1"
        Center="37,-100.1076291138805"
        ZoomLevel="3"
        ContextMenuOpening="RadMapContextMenuOpening">
    <telerik:RadMap.Provider>
        <telerik:OpenStreetMapProvider />
    </telerik:RadMap.Provider>
    <telerik:RadMap.ContextMenu>
        <ContextMenu Name="contextMenu">
        </ContextMenu>
    </telerik:RadMap.ContextMenu>
    <telerik:InformationLayer x:Name="InformationLayer" />
</telerik:RadMap>

private Location menuLocation = Location.Empty;

private void MenuItemClicked(object sender, RoutedEventArgs e)
{
    if (!this.menuLocation.IsEmpty)
    {
        IEnumerable<object> list = this.InformationLayer.GetItemsInLocation(this.menuLocation);
        foreach (object item in list)
        {
            MapShape shape = item as MapShape;
            if (shape != null)
            {
                // Do your things here
                break;
            }
        }
    }
}

private void RadMapContextMenuOpening(object sender, ContextMenuEventArgs e)
{
    this.menuLocation = Location.GetCoordinates(this.RadMap1, Mouse.GetPosition(this.RadMap1));

    bool close = true;
    IEnumerable<object> list = this.InformationLayer.GetItemsInLocation(this.menuLocation);
    foreach (object item in list)
    {
        MapShape shape = item as MapShape;
        if (shape != null)
        {
            close = false;
            break;
        }
    }

    if (!close)
    {
        this.SetupContextMenuItems(this.contextMenu);
    }

    e.Handled = close;
}

private void SetupContextMenuItems(ContextMenu menu)
{
    menu.Items.Clear();

    MenuItem baseItem = new MenuItem();
    baseItem.Width = 200;
    baseItem.Header = "Select Action";
    baseItem.Background = Brushes.Blue;
    baseItem.Foreground = Brushes.White;
    baseItem.FontWeight = FontWeights.Bold;
    baseItem.Click += new RoutedEventHandler(this.MenuItemClicked);
    menu.Items.Add(baseItem);

    MenuItem hidepolygonItem = new MenuItem();
    hidepolygonItem.Width = 200;
    hidepolygonItem.Header = "Hide Polyline";
    menu.Items.Add(hidepolygonItem);
}

Greetings,
Andrey Murzov
the Telerik team