HttpRuntime应用程序的运行时

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System.Web.HttpRuntime类是整个Asp.net服务器处理的入口。

这个类提供了一系列的静态属性，反映web应用程序域的设置信息，而且每个web应用程序域中存在一个System.Web.Runtime类。

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

namespace HttpRuntimeDemo

{

    public partial class _default : System.Web.UI.Page

    {

        protected void Page_Load(object sender, EventArgs e)

        {

            StringBuilder sb = new StringBuilder();

            //应用程序域id

            sb.AppendFormat("AppDomainAppId:{0}<br/>", HttpRuntime.AppDomainAppId);

            //web应用程序所在文件目录

            sb.AppendFormat("AppDomainAppPath:{0}<br/>", HttpRuntime.AppDomainAppPath);

            //web应用程序的虚拟目录

            sb.AppendFormat("AppDomainAppVirtualPath:{0}<br/>", HttpRuntime.AppDomainAppVirtualPath);

            //客户端脚本在服务器上的文件目录

            sb.AppendFormat("AspClientScriptPhysicalPath:{0}<br/>", HttpRuntime.AspClientScriptPhysicalPath);

            //客户端脚本在服务器上的虚拟目录

            sb.AppendFormat("AspClientScriptPhysicalPath:{0}<br/>", HttpRuntime.AspClientScriptVirtualPath);

            //asp.net安装目录

            sb.AppendFormat("AspInstallDirectory:{0}<br/>", HttpRuntime.AspInstallDirectory);

            //bin目录

            sb.AppendFormat("BinDirectory:{0}<br/>", HttpRuntime.BinDirectory);

            //clr安装目录

            sb.AppendFormat("ClrInstallDirectory:{0}<br/>", HttpRuntime.ClrInstallDirectory);

            //生成代码的目录

            sb.AppendFormat("CodegenDir:{0}<br/>", HttpRuntime.CodegenDir);

            //iss版本

            sb.AppendFormat("IISVersion:{0}<br/>", HttpRuntime.IISVersion.MajorRevision.ToString());

            //本机配置文件所在的目录

            sb.AppendFormat("MachineConfigurationDirectory:{0}<br/>", HttpRuntime.MachineConfigurationDirectory);

            //是否使用iis7集成模式

            sb.AppendFormat("UsingIntegratedPipeline:{0}<br/>", HttpRuntime.UsingIntegratedPipeline.ToString());

            // Summary:

            //     Gets a value that indicates whether the application is mapped to a universal

            //     naming convention (UNC) share.

            sb.AppendFormat("IsOnUNCShare:{0}<br/>", HttpRuntime.IsOnUNCShare.ToString());

            Response.Write(sb.ToString());

        }

    }

}

上面列出了HttpRuntime主要的几个静态属性，输出结果为

而HttpRuntime的静态方法ProcessRequest将帮助我们处理Http请求。

        //

        // Summary:

        //     Drives all ASP.NET Web processing execution.

        //

        // Parameters:

        //   wr:

        //     An System.Web.HttpWorkerRequest for the current application.

        //

        // Exceptions:

        //   System.ArgumentNullException:

        //     The wr parameter is null.

        //

        //   System.PlatformNotSupportedException:

        //     The Web application is running under IIS 7 in Integrated mode.

        public static void ProcessRequest(HttpWorkerRequest wr);