ASP.NET页面优化：性能提升8倍的方法

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分析优化结果１

测试用例1执行相同次数所花费的时间是测试用例2的6倍，为什么会这样呢？

为了回答这个问题，我们首先要知道前面二个页面在执行时，它们是如何运行的。

说到这里，就不得不谈ASP.NET的页面编译方式了。

ASP.NET的页面编译过程是个复杂的操作，其实我们可以不用关心页面是如何编译的，但要知道：页面编译后是什么样的。

为了能直观地了解页面编译后的样子，我编译了整个网站，并生成到一个DLL文件中，然后使用Reflector.exe来分析这个DLL的源代码。

将网站编译成一个DLL文件有二个方法：

1. 安装WebDeployment插件。
2. 使用我的工具：FishAspnetTool

本文将使用FishAspnetTool来编译测试网站获得编译后的DLL文件。

FishAspnetTool是什么？

FishAspnetTool是我在使用Visual Web Developer 2005时，为了方便编译网站而写的一个小工具。

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操作方法：

1. 点击粉色按钮，选择网站路径。

2. 单选按钮选择第2项。

3. 点击【发布网站】按钮。

在编译网站之后，我就可以知道网站在运行时如何运行页面了。

测试用例1的页面，最后被编译成这样了：

namespace ASP  
{  
    using System;  
    using System.Diagnostics;  
    using System.Runtime.CompilerServices;  
    using System.Web;  
    using System.Web.UI;  
    using System.Web.UI.WebControls;  
 
    [CompilerGlobalScope]  
    public class testpage_webfrompage_aspx : TestPage_WebFromPage, IHttpHandler  
    {  
        private static object __fileDependencies;  
        private static bool __initialized;  
 
        [DebuggerNonUserCode]  
        public testpage_webfrompage_aspx()  
        {  
            base.AppRelativeVirtualPath = "~/TestPage/WebFromPage.aspx";  
            if (!__initialized)  
            {  
                string[] virtualFileDependencies = new string[] { "~/TestPage/WebFromPage.aspx", "~/TestPage/WebFromPage.aspx.cs" };  
                __fileDependencies = base.GetWrappedFileDependencies(virtualFileDependencies);  
                __initialized = true;  
            }  
            base.Server.ScriptTimeout = 0x1c9c380;  
        }  
 
        [DebuggerNonUserCode]  
        private void __BuildControl__control10(Control __ctrl)  
        {  
            IParserAccessor accessor = __ctrl;  
            accessor.AddParsedSubObject(new LiteralControl("<hr />"));  
        }  
 
        [DebuggerNonUserCode]  
        private void __BuildControl__control11(Control __ctrl)  
        {  
            IParserAccessor accessor = __ctrl;  
            accessor.AddParsedSubObject(new LiteralControl("\r\n\t"));  
            HyperLink link = this.__BuildControl__control12();  
            accessor.AddParsedSubObject(link);  
            accessor.AddParsedSubObject(new LiteralControl("<br />\r\n"));  
        }  
 
        [DebuggerNonUserCode]  
        private HyperLink __BuildControl__control12()  
        {  
            HyperLink link = new HyperLink {  
                TemplateControl = this 
            };  
            link.ApplyStyleSheetSkin(this);  
            link.ID = "link1";  
            return link;  
        }  
 
        [DebuggerNonUserCode]  
        private void __BuildControl__control13(Control __ctrl)  
        {  
            IParserAccessor accessor = __ctrl;  
            accessor.AddParsedSubObject(new LiteralControl("<hr />"));  
        }  
 
        [DebuggerNonUserCode]  
        private void __BuildControl__control14(Control __ctrl)  
        {  
            IParserAccessor accessor = __ctrl;  
            accessor.AddParsedSubObject(new LiteralControl("\r\n\t"));  
            HyperLink link = this.__BuildControl__control15();  
            accessor.AddParsedSubObject(link);  
            accessor.AddParsedSubObject(new LiteralControl("<br />\r\n"));  
        }  
 
        [DebuggerNonUserCode]  
        private HyperLink __BuildControl__control15()  
        {  
            HyperLink link = new HyperLink {  
                TemplateControl = this 
            };  
            link.ApplyStyleSheetSkin(this);  
            link.ID = "link1";  
            return link;  
        }  
 
        [DebuggerNonUserCode]  
        private void __BuildControl__control16(Control __ctrl)  
        {  
            IParserAccessor accessor = __ctrl;  
            accessor.AddParsedSubObject(new LiteralControl("<hr />"));  
        }  
 
        [DebuggerNonUserCode]  
        private void __BuildControl__control2(Control __ctrl)  
        {  
            IParserAccessor accessor = __ctrl;  
            accessor.AddParsedSubObject(new LiteralControl("\r\n\t"));  
            HyperLink link = this.__BuildControl__control3();  
            accessor.AddParsedSubObject(link);  
            accessor.AddParsedSubObject(new LiteralControl("<br />\r\n"));  
        }  
 
        [DebuggerNonUserCode]  
        private HyperLink __BuildControl__control3()  
        {  
            HyperLink link = new HyperLink {  
                TemplateControl = this 
            };  
            link.ApplyStyleSheetSkin(this);  
            link.ID = "link1";  
            return link;  
        }  
 
        [DebuggerNonUserCode]  
        private void __BuildControl__control4(Control __ctrl)  
        {  
            IParserAccessor accessor = __ctrl;  
            accessor.AddParsedSubObject(new LiteralControl("<hr />"));  
        }  
 
        [DebuggerNonUserCode]  
        private void __BuildControl__control5(Control __ctrl)  
        {  
            IParserAccessor accessor = __ctrl;  
            accessor.AddParsedSubObject(new LiteralControl("\r\n\t"));  
            HyperLink link = this.__BuildControl__control6();  
            accessor.AddParsedSubObject(link);  
            accessor.AddParsedSubObject(new LiteralControl("<br />\r\n"));  
        }  
 
        [DebuggerNonUserCode]  
        private HyperLink __BuildControl__control6()  
        {  
            HyperLink link = new HyperLink {  
                TemplateControl = this 
            };  
            link.ApplyStyleSheetSkin(this);  
            link.ID = "link1";  
            return link;  
        }  
 
        [DebuggerNonUserCode]  
        private void __BuildControl__control7(Control __ctrl)  
        {  
            IParserAccessor accessor = __ctrl;  
            accessor.AddParsedSubObject(new LiteralControl("<hr />"));  
        }  
 
        [DebuggerNonUserCode]  
        private void __BuildControl__control8(Control __ctrl)  
        {  
            IParserAccessor accessor = __ctrl;  
            accessor.AddParsedSubObject(new LiteralControl("\r\n\t"));  
            HyperLink link = this.__BuildControl__control9();  
            accessor.AddParsedSubObject(link);  
            accessor.AddParsedSubObject(new LiteralControl("<br />\r\n"));  
        }  
 
        [DebuggerNonUserCode]  
        private HyperLink __BuildControl__control9()  
        {  
            HyperLink link = new HyperLink {  
                TemplateControl = this 
            };  
            link.ApplyStyleSheetSkin(this);  
            link.ID = "link1";  
            return link;  
        }  
 
        [DebuggerNonUserCode]  
        private Repeater __BuildControlrepeater1()  
        {  
            Repeater repeater = new Repeater();  
            base.repeater1 = repeater;  
            repeater.ItemTemplate = new CompiledTemplateBuilder(new BuildTemplateMethod(this.__BuildControl__control2));  
            repeater.FooterTemplate = new CompiledTemplateBuilder(new BuildTemplateMethod(this.__BuildControl__control4));  
            repeater.ID = "repeater1";  
            repeater.ItemDataBound += new RepeaterItemEventHandler(this.repeater1_ItemDataBound);  
            return repeater;  
        }  
 
        [DebuggerNonUserCode]  
        private Repeater __BuildControlrepeater2()  
        {  
            Repeater repeater = new Repeater();  
            base.repeater2 = repeater;  
            repeater.ItemTemplate = new CompiledTemplateBuilder(new BuildTemplateMethod(this.__BuildControl__control5));  
            repeater.FooterTemplate = new CompiledTemplateBuilder(new BuildTemplateMethod(this.__BuildControl__control7));  
            repeater.ID = "repeater2";  
            repeater.ItemDataBound += new RepeaterItemEventHandler(this.repeater1_ItemDataBound);  
            return repeater;  
        }  
 
        [DebuggerNonUserCode]  
        private Repeater __BuildControlrepeater3()  
        {  
            Repeater repeater = new Repeater();  
            base.repeater3 = repeater;  
            repeater.ItemTemplate = new CompiledTemplateBuilder(new BuildTemplateMethod(this.__BuildControl__control8));  
            repeater.FooterTemplate = new CompiledTemplateBuilder(new BuildTemplateMethod(this.__BuildControl__control10));  
            repeater.ID = "repeater3";  
            repeater.ItemDataBound += new RepeaterItemEventHandler(this.repeater1_ItemDataBound);  
            return repeater;  
        }  
 
        [DebuggerNonUserCode]  
        private Repeater __BuildControlrepeater4()  
        {  
            Repeater repeater = new Repeater();  
            base.repeater4 = repeater;  
            repeater.ItemTemplate = new CompiledTemplateBuilder(new BuildTemplateMethod(this.__BuildControl__control11));  
            repeater.FooterTemplate = new CompiledTemplateBuilder(new BuildTemplateMethod(this.__BuildControl__control13));  
            repeater.ID = "repeater4";  
            repeater.ItemDataBound += new RepeaterItemEventHandler(this.repeater1_ItemDataBound);  
            return repeater;  
        }  
 
        [DebuggerNonUserCode]  
        private Repeater __BuildControlrepeater5()  
        {  
            Repeater repeater = new Repeater();  
            base.repeater5 = repeater;  
            repeater.ItemTemplate = new CompiledTemplateBuilder(new BuildTemplateMethod(this.__BuildControl__control14));  
            repeater.FooterTemplate = new CompiledTemplateBuilder(new BuildTemplateMethod(this.__BuildControl__control16));  
            repeater.ID = "repeater5";  
            repeater.ItemDataBound += new RepeaterItemEventHandler(this.repeater1_ItemDataBound);  
            return repeater;  
        }  
 
        [DebuggerNonUserCode]  
        private void __BuildControlTree(testpage_webfrompage_aspx __ctrl)  
        {  
            __ctrl.EnableViewState = false;  
            __ctrl.EnableViewStateMac = false;  
            this.InitializeCulture();  
            IParserAccessor accessor = __ctrl;  
            accessor.AddParsedSubObject(new LiteralControl("\r\n\r\n<html xmlns=\"http://www.w3.org/1999/xhtml\">\r\n<head>\r\n    <title>PagePerformanceTest   http://www.cnblogs.com/fish-li/</title>\r\n</head>\r\n<body>\r\n\r\n<p>This is WebFromPage.aspx</p>\r\n\r\n"));  
            Repeater repeater = this.__BuildControlrepeater1();  
            accessor.AddParsedSubObject(repeater);  
            accessor.AddParsedSubObject(new LiteralControl("\r\n\r\n"));  
            Repeater repeater2 = this.__BuildControlrepeater2();  
            accessor.AddParsedSubObject(repeater2);  
            accessor.AddParsedSubObject(new LiteralControl("\r\n\r\n"));  
            Repeater repeater3 = this.__BuildControlrepeater3();  
            accessor.AddParsedSubObject(repeater3);  
            accessor.AddParsedSubObject(new LiteralControl("\r\n\r\n"));  
            Repeater repeater4 = this.__BuildControlrepeater4();  
            accessor.AddParsedSubObject(repeater4);  
            accessor.AddParsedSubObject(new LiteralControl("\r\n\r\n"));  
            Repeater repeater5 = this.__BuildControlrepeater5();  
            accessor.AddParsedSubObject(repeater5);  
            accessor.AddParsedSubObject(new LiteralControl("\r\n\r\n\r\n</body>\r\n</html>\r\n"));  
        }  
 
        [DebuggerNonUserCode]  
        protected override void FrameworkInitialize()  
        {  
            base.FrameworkInitialize();  
            this.__BuildControlTree(this);  
            base.AddWrappedFileDependencies(__fileDependencies);  
            base.Request.ValidateInput();  
        }  
 
        [DebuggerNonUserCode]  
        public override int GetTypeHashCode()  
        {  
            return -781896338;  
        }  
 
        [DebuggerNonUserCode]  
        public override void ProcessRequest(HttpContext context)  
        {  
            base.ProcessRequest(context);  
        }  
 
        protected override bool SupportAutoEvents  
        {  
            get  
            {  
                return false;  
            }  
        }  
    }  
} 

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