The Context Menu is a client side menu that looks like the same context menus users see when they right click in the browser. When the user clicks on a command, it runs a client side script that you supply.
<asp:TextBox ID="ContextMenuTextBox1" runat="server" /> <des:ContextMenu ID="ContextMenu1" runat="server"> <ClickList> <des:ClickItem MouseButtonType="Right" ControlID="ContextMenuTextBox1" /> </ClickList> <des:CommandMenuItem OnClickScript="alert('All commands run Javascript. In this case, it called the alert() function.');" CommandLabel="Command 1" CommandID="1" CommandKey="CTRL+K" /> <des:SeparatorMenuItem/> <des:HintMenuItem Hint="The above was a separator" /> </des:ContextMenu>