<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Example.aspx.cs" Inherits="Example" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
protected void buttonclick(object sender, EventArgs e)
{
TextBox1.Text = "You are using Script to update";
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<asp:Button ID="Button1" runat="server" Text="Button" onclick="buttonclick"/>
</div>
</form>
</body>
</html>