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<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="PostBackText._Default" %>
<!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>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
<asp:Label ID="Label2" runat="server" Text="Label"></asp:Label>
<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Button" />
<asp:Button ID="Button2" runat="server" onclick="Button2_Click" Text="Button" />
</div>
</form>
</body>
</html>
Default.aspx.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace PostBackText
{
public partial class _Default : System.Web.UI.Page
{
private string a;
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
Label1.Text = "1";
a = "1";
}
protected void Button2_Click(object sender, EventArgs e)
{
Label2.Text = a;
}
}
}
protected void Button1_Click(object sender, EventArgs e)
{
ViewState["_a"]= (ViewState["_a"]==null?1:int.Pase(ViewState["_a"].ToString())) +1;
Label1.Text = ViewState["_a"].ToString();
}
private string a;
protected void Page_Load(object sender, EventArgs e)
{
Label1.EnableViewState = false;
}
protected void Button1_Click(object sender, EventArgs e)
{
Label1.Text = "1";
a = "1";
}
protected void Button2_Click(object sender, EventArgs e)
{
Label2.Text = a;
}