HttpRuntime应用程序运行时

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);

转：https://www.cnblogs.com/wolf-sun/p/5199315.html