Introduction
We can use javascript to disable right mouse click or ctrl keys to ensure user is not able to copy paste in a textbox
we can achieve this in 2 ways
1. use this method when you don't want any alerts or message <asp:TextBox ID="TextBox1" runat="server"
oncopy="return false"
onpaste="return false"
oncut="return false">
</asp:TextBox>
Right this javascript function in the head section of aspx page, in
this function we are disabling right mouse click and ctrl keys
<head runat="server">
<title>Untitled Page</title>
<script language="javascript">
function DisableRightClick(event)
{
//For mouse right click
if (event.button==2)
{
alert("Right Clicking not allowed!");
}
}
function DisableCtrlKey(e)
{
var code = (document.all) ? event.keyCode:e.which;
var message = "Ctrl key functionality is disabled!";
// look for CTRL key press
if (parseInt(code)==17)
{
alert(message);
window.event.returnValue = false;
}
}
</script>
</head>
Now use this function on the textbox which we want to disable copy paste and right clicking
<body>
<form id="form1" runat="server">
<div>
<strong>
Right click disabled</strong> textbox
<br />
<asp:TextBox ID="TextBoxCopy" runat="server"
onMouseDown="DisableRightClick(event)">
</asp:TextBox><br />
<br />
<strong>Ctrl key </strong>disabled<br />
<asp:TextBox ID="TextBox2" runat="server"
onKeyDown="return DisableCtrlKey(event)">
</asp:TextBox><br />
<br />
Another method to disable<strong> Cut,Copy and paste
</strong>in textbox<br />
<br />
<asp:TextBox ID="TextBox1" runat="server"
oncopy="return false"
onpaste="return false"
oncut="return false">
</asp:TextBox>
</form>
</body>
Hope this helps
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