Disable Copy,Cut and Paste of the Aspx textbox

In Asp.net for the textboxes, if you want to disable some options like Copy,Paste and Cut, you can do this by writing simple code in the aspx page as below.

<table>
<tr><td><asp:TextBox ID="TxtNameEmp" runat ="server" oncut="return false" ></asp:TextBox></td>
<td><asp:TextBox ID="TxtId" runat ="server" oncopy="return false"></asp:TextBox></td>
<td><asp:TextBox ID="TxtAddress" runat ="server" onpaste="return false"></asp:TextBox></td>
</tr>
</table>