Sometimes, due to many reasons we don't want to allow the users to use the right click to copy, paste, or by using ctrl+C , ctrl+v to copy and paste in the textbox on an .aspx page in asp.net.
To implement so, we can use the javascript and we can achieve this in 2 ways ...
1. Use this method when you don't want any alerts or messages
<asp:TextBox ID="TextBox1" runat="server"
oncopy="return false"
onpaste="return false"
oncut="return false">
</asp:TextBox>
2. If you want to show the alerts, then in this case, use the given below method instead
Write this javascript function in the head section of the .aspx page. In this function we are disabling the right mouse click and the 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 where we want to disable the copy paste and the 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>
Output
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erkunalpatel