C#获取应用程序路径或Web页面目录路径

System.windows.Forms.Application.StartupPath;
System.Environment.CurrentDirectory;
System.IO.Directory.GetCurrentDirectory();

System.AppDomain.CurrentDomain.BaseDirectory;
System.AppDomain.CurrentDomain.SetupInformation.ApplicationBase;

System.Windows.Forms.Application.ExecutablePath;
System.Diagnostics.Process.GetCurrentProcess().MainModule.FileName;
System.Reflection.Assembly.GetExecutingAssembly().CodeBase; //或者
System.Reflection.Assembly.GetAssembly(typeof(类名)).CodeBase; //利用反射获取当前程序集的位置
typeof(类名).Assembly.Location;//利用反射

System.Web.HttpRuntime.AppDomainAppVirtualPath;
Request.ApplicationPath;

AppDomain.CurrentDomain.BaseDirectory;
Request.PhsicalApplicaitonPath; 
Server.MapPath(“~”) \\ Server.MapPath("/WebSite1")

Request.Path      //相对路径 /WebSite1/folder/WebForm1.aspx
Request.PhsicalPath      //绝对路径 E:\mis\tools\folder\WebForm1.aspx
Request.AppRelativeCurrentExecutionFilePath      //~/folder/WebForm1.aspx

Server.MapPath(”.”)或Server.MapPath(””);      //E:\mis\tools\folder
Server.MapPath(”./1.jpg”)或Server.MapPath(”1.jpg”);     //E:\mis\tools\folder\1.jpg

Server.MapPath(”..”)     // E:\mis\tools
Server.MapPath(”../1.jpg”) //(””);     //E:\mis\tools\1.jpg 上一目录下的1.JPG文件
Server.MapPath(”../..”)     //C:\inputpub\wwwroot 上一目录的上一目录，到了顶目录wwwroot

Server.MapPath(”/”)  //C:\inputpub\wwwroot