Here’s another way around for you
<script type=”text/javascript” language=”javascript”>
function validatelimit(obj, maxchar)
{
if(this.id) obj = this;
var remaningChar = maxchar – obj.value.length;
document.getElementById(’<%= Label1.ClientID %>’).innerHTML = remaningChar;
if( remaningChar <= 0)
{
obj.value = obj.value.substring(maxchar,0);
return false;
}
else
{return true;}
}
</script>
<asp:TextBox ID=”TextBox1″ runat=”server” TextMode=”MultiLine” onkeyup=”return validatelimit(this,500)” Height=”400px”></asp:TextBox>
<asp:Label ID=”Label1″ runat=”server” Text=”500″></asp:Label>
