驗證一個ASP.NET應(yīng)用程序和頁面的生命周期的實現(xiàn)代碼
2024-07-10 12:41:29
供稿：網(wǎng)友
如果我們能更好地掌握這樣一個過程，那么對單個ASP.NET Page的生命周期也能更好地了解：
下面介紹如何編寫一個簡單的ASP.NET 頁面和一個簡單的HttpModule，對MSDN里提到的ASP.NET的生命周期進(jìn)行驗證
1. 首先使用Visual Studio 2010建立一個空的ASP.NET網(wǎng)站 （ASP.NET 4.0）
2. 添加一個Default.aspx，添加三個ASP.NET控件，分別為TextBox，Button和Validator：
代碼如下:
<form id="form1" runat="server">
<div>
<asp:TextBox ID="txtName" runat="server"></asp:TextBox>
<asp:Button ID="btnSubmit" runat="server" Text="OK" onclick="btnSubmit_Click" />
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ErrorMessage="Please input your name!" ControlToValidate="txtName" ForeColor="#FF3300">
</asp:RequiredFieldValidator>
</div>
</form>
3. 添加一個ASP.NEt的App_code文件夾，新建一個類，內(nèi)容為：
代碼如下:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
public class TestClass : IHttpModule
{
HttpApplication httpApp;
public static List<string> EventList = new List<string>();
public TestClass()
{
}
public void Dispose()
{ }
public void Init(HttpApplication context)
{
this.httpApp = context;
//EventList.Clear();
EventList.Add("Initiated");
context.BeginRequest += new EventHandler(context_BeginRequest);
context.AuthenticateRequest += new EventHandler(context_AuthenticateRequest);
context.AuthorizeRequest += new EventHandler(context_AuthorizeRequest);
context.ResolveRequestCache += new EventHandler(context_ResolveRequestCache);
context.AcquireRequestState += new EventHandler(context_AcquireRequestState);
context.PreRequestHandlerExecute += new EventHandler(context_PreRequestHandlerExecute);
context.PostReleaseRequestState += new EventHandler(context_PostReleaseRequestState);
context.ReleaseRequestState += new EventHandler(context_ReleaseRequestState);
context.UpdateRequestCache += new EventHandler(context_UpdateRequestCache);
context.EndRequest += new EventHandler(context_EndRequest);
}
private void context_EndRequest(object sender, EventArgs e)
{
EventList.Add("HTTP Modules: End Request <hr>");
foreach (string str in EventList)
{
httpApp.Response.Write(str + "<br>");
}
EventList.Clear();
}
void context_UpdateRequestCache(object sender, EventArgs e)
{
EventList.Add("HTTP Modules: Update Request Cache");
}
void context_ReleaseRequestState(object sender, EventArgs e)
{
EventList.Add("HTTP Modules: Release Request State");
}
void context_PostReleaseRequestState(object sender, EventArgs e)
{
EventList.Add("HTTP Modules: Post Release Request State");
}
void context_PreRequestHandlerExecute(object sender, EventArgs e)
{
EventList.Add("HTTP Modules: Pre Request Handler Execution");
