HttpContext.Current

返回当前请求的 HttpContext 对象。如此我们就可以直接访问Request、Response、Session、Application等对象，和Page中访问等同。

我们无需再将Page用参数的方式传递到我们的类库对象中。

HttpContext.Current.Session["name"] = "猪八戒";

string name = HttpContext.Current.Request.Param["name"];

HttpContext.Current.Response.Write("猪八戒好吃懒做!");

HttpRuntime

为当前应用程序提供一组 ASP.NET 运行时服务。我们可以通过这个类获得当前ASP.NET工程的一些信息。

HttpRuntime.AppDomainAppVirtualPath : 项目虚拟路径

HttpRuntime.AppDomainAppPath : 项目物理路径

HttpRuntime.BinDirectory : BIN目录物理路径

HttpRuntime.ClrInstallDirectory : CLR安装路径(可以用来获取CLR版本号)

Response.Write(string.Format("AppDomainAppId: {0}<br>", HttpRuntime.AppDomainAppId));

Response.Write(string.Format("AppDomainAppPath: {0}<br>", HttpRuntime.AppDomainAppPath));

Response.Write(string.Format("AppDomainAppVirtualPath: {0}<br>", HttpRuntime.AppDomainAppVirtualPath));

Response.Write(string.Format("AppDomainId: {0}<br>", HttpRuntime.AppDomainId));

Response.Write(string.Format("AspInstallDirectory: {0}<br>", HttpRuntime.AspInstallDirectory));

Response.Write(string.Format("BinDirectory: {0}<br>", HttpRuntime.BinDirectory));

Response.Write(string.Format("ClrInstallDirectory: {0}<br>", HttpRuntime.ClrInstallDirectory));

Response.Write(string.Format("CodegenDir: {0}<br>", HttpRuntime.CodegenDir));

Response.Write(string.Format("IsOnUNCShare: {0}<br>", HttpRuntime.IsOnUNCShare.ToString()));

Response.Write(string.Format("MachineConfigurationDirectory: {0}<br>", HttpRuntime.MachineConfigurationDirectory));

输出:

AppDomainAppId: /LM/W3SVC/1/Root/Learn.Test.Web

AppDomainAppPath: D:\System\My Documents\Visual Studio Projects\Learn.Test\Learn.Test.Web\

AppDomainAppVirtualPath: /Learn.Test.Web

AppDomainId: /LM/W3SVC/1/Root/Learn.Test.Web-9-127652564154400560

AspInstallDirectory: C:\WINDOWS\Microsoft.NET\Framework\v1.1.4322

BinDirectory: D:\System\My Documents\Visual Studio Projects\Learn.Test\Learn.Test.Web\bin\

ClrInstallDirectory: c:\windows\microsoft.net\framework\v1.1.4322

CodegenDir: C:\WINDOWS\Microsoft.NET\Framework\v1.1.4322\Temporary ASP.NET Files\learn.test.web\41680132\7c880883

IsOnUNCShare: False

MachineConfigurationDirectory: c:\windows\microsoft.net\framework\v1.1.4322\Config

HostingEnvironment

string siteName = HostingEnvironment.SiteName;

string appPath = HostingEnvironment.ApplicationVirtualPath;

string phyPath = HostingEnvironment.ApplicationPhysicalPath;

string adminPath = HostingEnvironment.MapPath("~/Admin");

ApplicationManager.GetApplicationManager().ShutdownApplication(HostingEnvironment.ApplicationID);