Disable Copy/Paste in asp.net textbox
Sometimes you don’t want to allow user to copy/paste or (Ctrl + C)/(Ctrl + V) in asp.net textbox.
You have to use onCopy=”return false” onPaste=”return false”
Here is an example of that:
<asp:TextBox ID=”tb_Email” runat=”server”
onCopy=”return false” onPaste=”return false” ></asp:TextBox>
This will restrict user from directly copy/paste into textbox, they have to type manually.