Asp.net 页面生命周期：从OnPreInit到End Render

从下面的页面我们可以看到asp.net 的一个页面从创建到创建完成都执行了哪些操作以及他们的执行顺序。



/*

类别	消息	From First(s)	From Last(s)
	DeterminePostBackMode
aspx.page	Begin PreInit	0.000040	0.000040
	OnPreInit	0.000289	0.000249
aspx.page	End PreInit	0.000325	0.000036
aspx.page	Begin Init	0.000338	0.000014
	OnInit	0.000483	0.000145
aspx.page	End Init	0.000509	0.000026
aspx.page	Begin InitComplete	0.000522	0.000013
	OnInitComplete	0.000639	0.000116
aspx.page	End InitComplete	0.000663	0.000024
aspx.page	Begin PreLoad	0.000680	0.000017
	OnPreLoad	0.000795	0.000115
aspx.page	End PreLoad	0.000818	0.000024
aspx.page	Begin Load	0.000832	0.000013
	Page_Load	0.001144	0.000312
aspx.page	End Load	0.001183	0.000039
aspx.page	Begin LoadComplete	0.001206	0.000023
	OnLoadComplete	0.001372	0.000166
aspx.page	End LoadComplete	0.001399	0.000027
aspx.page	Begin PreRender	0.001412	0.000014
aspx.page	End PreRender	0.001493	0.000081
aspx.page	Begin PreRenderComplete	0.001517	0.000024
	OnPreRenderComplete	0.001642	0.000125
aspx.page	End PreRenderComplete	0.001666	0.000024
aspx.page	Begin SaveState	0.001858	0.000192
	SavePageStateToPersistenceMedium	0.002551	0.000693
aspx.page	End SaveState	0.003602	0.001051
aspx.page	Begin SaveStateComplete	0.003654	0.000051
	OnSaveStateComplete	0.003911	0.000257
aspx.page	End SaveStateComplete	0.082377	0.078466
aspx.page	Begin Render	0.082457	0.000080
	CreateHtmlTextWiter	0.082774	0.000317
	Render	0.083404	0.000630
aspx.page	End Render	0.083990	0.000586
	CreateHtmlTextWiter	0.084585	0.000595

*/

代码如下：

//Default.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="Default"Trace="true" %>

//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 : System.Web.UI.Page ,ICallbackEventHandler

{

protected void Page_Load(object sender, EventArgs e)

{

Trace.Warn("Page_Load");

}

public override void ApplyStyleSheetSkin(Page page)

{

base.ApplyStyleSheetSkin(page);

Trace.Warn("ApplyStyleSheetSkin");

}

protected override HtmlTextWriter CreateHtmlTextWriter(System.IO.TextWriter tw)

{

Trace.Warn("CreateHtmlTextWiter");

return base.CreateHtmlTextWriter(tw);

}

protected override ControlCollection CreateControlCollection()

{

Trace.Warn("CreateControlCollection");

return base.CreateControlCollection();

}

protected override System.Collections.Specialized.NameValueCollection DeterminePostBackMode()

{

Trace.Warn("DeterminePostBackMode");

return base.DeterminePostBackMode();

}

protected override void InitializeCulture()

{

Trace.Warn("InitializeCulture");

base.InitializeCulture();

}

protected override void FrameworkInitialize()

{

Trace.Warn("FrameworkInitialize");

base.FrameworkInitialize();

}

protected override void InitOutputCache(int duration, string varyByHeader, string varyByCustom, OutputCacheLocation location, string varyByParam)

{

Trace.Warn("InitOutputCache");

base.InitOutputCache(duration, varyByHeader, varyByCustom, location, varyByParam);

}

protected override object LoadPageStateFromPersistenceMedium()

{

Trace.Warn("LoadPageStateFromPersistenceMedium");

return base.LoadPageStateFromPersistenceMedium();

}

protected override void OnInit(EventArgs e)

{

base.OnInit(e);

Trace.Warn("OnInit");

}

protected override void OnInitComplete(EventArgs e)

{

Trace.Warn("OnInitComplete");

base.OnInitComplete(e);

}

protected override void OnLoadComplete(EventArgs e)

{

Trace.Warn("OnLoadComplete");

base.OnLoadComplete(e);

}

protected override void OnPreInit(EventArgs e)

{

Trace.Warn("OnPreInit");

base.OnPreInit(e);

}

protected override void OnPreLoad(EventArgs e)

{

Trace.Warn("OnPreLoad");

base.OnPreLoad(e);

}

protected override void OnPreRenderComplete(EventArgs e)

{

Trace.Warn("OnPreRenderComplete");

base.OnPreRenderComplete(e);

}

protected override void OnSaveStateComplete(EventArgs e)

{

Trace.Warn("OnSaveStateComplete");

base.OnSaveStateComplete(e);

}

public override void ProcessRequest(HttpContext context)

{

Trace.Warn("ProcessRequest");

base.ProcessRequest(context);

}

protected override void RaisePostBackEvent(IPostBackEventHandler sourceControl, string eventArgument)

{

Trace.Warn("RaisePostBackEvent");

base.RaisePostBackEvent(sourceControl, eventArgument);

}

protected override void Render(HtmlTextWriter writer)

{

Trace.Warn("Render");

base.Render(writer);

}

protected override void SavePageStateToPersistenceMedium(object state)

{

Trace.Warn("SavePageStateToPersistenceMedium");

base.SavePageStateToPersistenceMedium(state);

}

#region ICallbackEventHandler 成员

public string GetCallbackResult()

{

throw new Exception("The method or operation is not implemented.");

}

public void RaiseCallbackEvent(string eventArgument)

{

throw new Exception("The method or operation is not implemented.");

}

#endregion

}