EventHandler : Events « ASP.net Controls « ASP.NET Tutorial
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<%@ Page Language="C#" CodeFile="Default.aspx.cs" Inherits="Default_aspx" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>ASP.NET Server Controls</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<h1>ASP.NET Server Controls</h1>
<h2>The date and time is <% =DateTime.Now.ToString() %>.</h2>
<asp:TextBox ID="txtBookName" runat="server" Width="250px">Enter a book name.</asp:TextBox>
<asp:Button ID="btnBookName" runat="server" Text="Book Name" OnClick="btnBookName_Click" />
<asp:Label ID="lblBookName" runat="server"></asp:Label>
</div>
</form>
</body>
</html>
File: Default.aspx.cs
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class Default_aspx : System.Web.UI.Page
{
public Default_aspx()
{
Load += new EventHandler(Page_Load);
}
protected void btnBookName_Click(object sender, EventArgs e)
{
lblBookName.Text = txtBookName.Text;
}
}