Disable cut, copy & paste using Javascript

<asp:TextBox ID="TextBox1" runat="server" oncopy="return false" onpaste="return false" oncut="return false"></asp:TextBox>

1. <script language="javascript" type="text/javascript">
2. function DisableCopyPaste (e)
3. {
4. // Message to display
5. var message = "Cntrl key/ Right Click Option disabled";
6. // check mouse right click or Ctrl key press
7. var kCode = event.keyCode || e.charCode;
8. //FF and Safari use e.charCode, while IE use e.keyCode
9. if (kCode == 17 || kCode == 2)
10. {
11. alert(message);
12. return false;
13. }
14. }
15. </script>
16. <asp:TextBox ID="TextBox1" runat="server" onKeyDown="return DisableCopyPaste(event)"onMouseDown="return DisableCopyPaste (event)"></asp:TextBox>