Gets a value that indicates whether a file exists in the virtual file system.
Assembly: System.Web (in System.Web.dll)
Override the method to indicate to the compilation system that the resource represented by virtualPath exists in the virtual file system provided by this VirtualPathProvider instance.
The following code example is an implementation of the method in a custom VirtualPathProvider class. For the full code required to run the example, see the Example section of the VirtualPathProvider class overview topic.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.