Server.mappath

Server.MapPath specifies the relative or virtual path to map to a physical directory. Server.MapPath(".") returns the current physical directory of the file (e.g. aspx) being executed Server.MapPath("..") returns the parent directory Server.MapPath("~") returns the physical path to the root of the application Server.MapPath("/") returns the physical path to the root of the domain name (is not necessarily the same as the root of the application) An example: Let's say you pointed a web site application (http://www.example.com/) to C:\Inetpub\wwwroot and installed your shop application (sub web as virtual directory in IIS, marked as application) in D:\WebApps\shop For example, if you call Server.MapPath in following request: http://www.example.com/shop/products/GetProduct.aspx?id=2342 then: Server.MapPath(".") returns D:\WebApps\shop\products Server.MapPath("..") returns D:\WebApps\shop Server.MapPath("~") returns D:\WebApps\shop Server.MapPath("/") returns C:\Inetpub\wwwroot Server.MapPath("/shop") returns D:\WebApps\shop If Path starts with either a forward (/) or backward slash (\), the MapPath method returns a path as if Path were a full, virtual path. If Path doesn't start with a slash, the MapPath method returns a path relative to the directory of the request being processed. Note: in C#, @ is the verbatim literal string operator meaning that the string should be used "as is" and not be processed for escape sequences.