ASPNET整個Postback程序處理的過程
我們知道無論是ASPNETx 甚至是以後的版本ASPNET最終Render到Client端通過浏覽器浏覽的都是一樣一個單純的HTMLClient通過 Submit Form的方式將填入Form的數據提交給Server進行處理我們現在來看看ASPNET整個Postback程序處理的過程
首先我們通過一個Sample來看ASPNET如何處理一個通過Click一個Button引起的Postback下面是Web Page的HTML
<%@ Page Language=C# AutoEventWireup=true CodeFile=Defaultaspxcs Inherits=_Default %>
<!DOCTYPE html PUBLIC //WC//DTD XHTML Transitional//ENtransitionaldtd>
<html xmlns=>
<head runat=server>
<title>Test Page</title>
</head>
<body>
<form id=form runat=server>
<div>
<asp:Label runat=server ID=LabelMessage ForeColor=red></asp:Label>
</div>
<div>
<asp:Button runat=server ID=Button Text=Button
OnClick=Button_Click OnCommand=Button_Command
CommandArgument=Button />
<asp:Button runat=server ID=Button Text=Button OnClick=Button_Click
OnCommand=Button_Command CommandArgument=Button UseSubmitBehavior=false />
<asp:Button runat=server ID=Button Text=Button OnClick=Button_Click
OnCommand=Button_Command CommandArgument=Button UseSubmitBehavior=false />
</div>
</form>
</body>
</html>
很簡單定義了個Button分別注冊了他們的兩個EventClick和Command個Button的Command Event Hander是一樣的Button_Command通過指定的CommandArgument來讓Event Handler判斷到底是哪個Button觸發了Command Event
下面是Code Behind
using System;
using SystemData;
using SystemConfiguration;
using SystemWeb;
using SystemWebSecurity;
using SystemWebUI;
using SystemWebUIWebControls;
using SystemWebUIWebControlsWebParts;
using SystemWebUIHtmlControls;
public partial class _Default : SystemWebUIPage
{
protected void Page_Load(object sender EventArgs e)
{
}
protected void Button_Click(object sender EventArgs e)
{
string message = stringFormat(The {} event of {} is fired Click Button);
thisLabelMessageText = message;
}
protected void Button_Click(object sender EventArgs e)
{
string message = stringFormat(The {} event of {} is fired Click Button);
thisLabelMessageText = message;
}
protected void Button_Click(object sender EventArgs e)
{
string message = stringFormat(The {} event of {} is fired Click Button);
thisLabelMessageText = message;
}
protected void Button_Command(object sender CommandEventArgs e)
{
string message = stringFormat(The {} event of {} is fired Command eCommandArgument);
thisLabelMessageText += ; + message;
}
}
以上是介紹ASPNET整個Postback程序處理的過程
From:http://tw.wingwit.com/Article/program/net/201311/12069.html
