Here is a working demo of this example.
<%@ Page Language="VB" %>
<!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>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>jQuery Alpha Characters Only</title>
<script src="http://code.jquery.com/jquery-1.4.1-vsdoc.js" type="text/javascript"></script>
<script type="text/javascript">
$(function () {
$(".gv input.rate").bind('keyup blur', function (e) {
if (this.value.match(/[^a-zA-Z ]/g)) {
this.value = this.value.replace(/[^a-zA-Z ]/g, '');
}
});
});
</script>
</head>
<body>
<form runat="server" id="form1">
<asp:SqlDataSource
id="srcMovies"
ConnectionString="<%$ ConnectionStrings:MyDatabase %>"
SelectCommand="SELECT Id,Title,Director FROM Movies"
Runat="server" />
<h3>Using a Gridview</h3>
<div class="tableDiv">
<asp:GridView
id="grdMovies"
DataSourceID="srcMovies"
DataKeyNames="Id"
AutoGenerateColumns="false"
Runat="server" class="gv">
<Columns>
<asp:BoundField DataField="Id" HeaderText="Id" />
<asp:BoundField DataField="Title" HeaderText="Title" />
<asp:TemplateField HeaderText="Comments">
<ItemTemplate>
<asp:TextBox id="txtComments" runat="server" MaxLength="25" class="rate" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<p id="para"></p>
</div>
</form>
</body>
</html>