The TemplateSourceDirectory property specifies the path to the page or user control that contains the current control. For example, if the Web page resides at http://www.contoso.com/application/subdirectory, the TemplateSourceDirectory property returns "application/subdirectory".
The following example uses the TemplateSourceDirectory property twice. The first time it is used in a Control.MapPathSecure method call to obtain the path to the directory in which the control resides. The second time it is in a Directory.GetFiles method call to obtain the list of all the files contained within that directory.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)