System.Web.HttpContext.Server.MapPath ()

Total Note: The path obtained by Server.MapPath is the physical path on the server, that is, the absolute path that is always said
1, Server.MapPath ("/")
Note: Obtain the location of the application root directory, such as C:\Inetpub\wwwroot\.
2, Server.MapPath ("./")
Note: Get the current directory on the page, equivalent to Server.MapPath ("").
3, Server.MapPath (".. /")
Note: Get the parent directory for your page.
4, Server.MapPath ("~/")
Note: Get the current application-level program directory, if it is the root directory, is the root directory, if it is a virtual directory, is the location of the virtual directory, such as C:\Inetpub\wwwroot\Example\.

System.Web.HttpContext.Server.MapPath ()