ChartView ContextMenuOpening Event

[Tarek]

Hi,
I'm trying to handle this event, but I'm getting this error:
"'ContextMenuOpening' is not an event of 'Telerik.WinControls.UI.RadChartView'"
Note: I'm using RadControls for WinForms Q2 2012.

[Dimitar]

Hi Tarek,

Thank you for writing.

This event was introduced in Q2 2013 (version 2013.2.612) and cannot be used in versions before this one.

To replace the default context menu in your version you should create a custom ChartDataPointElementController class:

public class MyChartDataPointElementController : ChartDataPointElementController
{
    RadContextMenu radContextMenu1;

    protected RadContextMenu CreateContextMenu()
    {
        RadContextMenu Menu1 = new RadContextMenu();
        Menu1.Items.Add(new RadMenuItem("Item 1"));
        return Menu1;
    }

    protected override ActionResult OnMouseDown(MouseEventArgs e)
    {
        if (e.Button == System.Windows.Forms.MouseButtons.Right)
        {
            if (radContextMenu1 == null)
            {
                radContextMenu1 = CreateContextMenu();
            }
            radContextMenu1.Show(Control.MousePosition);
            return Controller.Empty;
        }
        else
        {
            return base.OnMouseDown(e);
        }
    }
}

The default controller can be replaced as follows:

void Form1_Load(object sender, EventArgs e)
{
    radChartView1.Controllers.Clear();
    radChartView1.Controllers.Add(new MyChartDataPointElementController());
}

I hope this helps.

Regards,
Dimitar
Telerik