<%@ Page
Language="C#"
AutoEventWireup="true"
CodeBehind="WebForm1.aspx.cs"
Inherits="CharctersRemaining.WebForm1"
%>
<!DOCTYPE html PUBLIC "-//W3C//DTD
XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<script src="JScript1.js"
type="text/javascript"></script>
<script src="jquery-1.5.1.js"
type="text/javascript"></script>
<script type="text/javascript"
language="javascript">
var characterLimit = 250;
$(document).ready(function () {
$('#remainingCharacters').html(characterLimit);
$('#myTextarea').bind('keyup', function
() {
var charactersUsed = $(this).val().length;
if (charactersUsed > characterLimit)
{
charactersUsed = characterLimit;
$(this).val($(this).val().substr(0,
characterLimit));
$(this).scrollTop($(this)[0].scrollHeight);
}
var charactersRemaining = characterLimit
- charactersUsed;
$('#remainingCharacters').html(charactersRemaining);
});
});
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<table>
<tr>
<td>
<span
id="remainingCharacters"></span> chars remaining
</td>
</tr>
<tr>
<td>
<asp:TextBox ID="myTextarea"
runat="server"
BorderColor="Gray"
BorderStyle="Solid"
BorderWidth="1px" Height="125px"
MaxLength="250"
TextMode="MultiLine"
Width="350px"></asp:TextBox>
</td>
</tr>
</table>
</div>
</form>
</body>
</html>You Can Download the Working Code of Characters Remaining for Textbox in ASP.Net From here.