Restrict user from entering unlimited characters in a multiline textbox
First of all add following code inside <head> tag :: <script type="text/javascript" src="//code.jquery.com/jquery-1.10.2.js"></script> <script type="text/javascript"> $(function () { $('#txtdesc').keypress(function (e) { var txt = $(this).val(); if (txt.length > 90) { e.preventDefault(); } }); }); </script> Now add code in <body> tag :: <div> Enter Address(Should be Less than 90 Chars) <asp:TextBox ID="txtdesc" runat="server" TextMode="MultiLine"></asp:TextBox> </div>
