Instead of clearing context menu item like,
e.ContextMenu.Items.Clear();
i just collapsed each item as a work around. Please advise for better solution/workaround
for (int i = 0; i < e.ContextMenu.Items.Count; i++)
e.ContextMenu.Items[i].Visibility = Telerik.WinControls.ElementVisibility.Collapsed;
Now, i would like to know why i got the said error.