To implement this we need to write the code like as shown below
Designer Source Code
Designer Source Code
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>jQuery set maxlength for multiline textbox in asp.net</title>
<script type="text/javascript" src="http://code.jquery.com/jquery-1.9.1.js">
</script>
<script type="text/javascript">
$(function() {
$('#txtdesc').keypress(function(e) {
var txt = $(this).val();
if (txt.length > 50) {
e.preventDefault();
}
});
});
</script>
</head>
<body>
<form id="form1" runat="server">
<table>
<tr>
<td>
<b>Enter Text:</b>
</td>
<td>
<asp:TextBox ID="txtdesc" TextMode="MultiLine" runat="server" ></asp:TextBox>
</td>
</tr>
</table>
</form>
</body>
</html>
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