VirtualPathProvider.FileExists Method

Gets a value that indicates whether a file exists in the virtual file system.

Namespace: System.Web.Hosting
Assembly: System.Web (in system.web.dll)

Public Overridable Function FileExists ( _
	virtualPath As String _
) As Boolean
Dim instance As VirtualPathProvider
Dim virtualPath As String
Dim returnValue As Boolean

returnValue = instance.FileExists(virtualPath)
public boolean FileExists (
	String virtualPath
public function FileExists (
	virtualPath : String
) : boolean
Not applicable.



The path to the virtual file.

Return Value

true if the file exists in the virtual file system; otherwise, false.

Override the FileExists 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 FileExists 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.

Public Overrides Function FileExists(ByVal virtualPath As String) As Boolean
  If (IsPathVirtual(virtualPath)) Then
    Dim file As SampleVirtualFile
    file = CType(GetFile(virtualPath), SampleVirtualFile)
    Return file.Exists
    Return Previous.FileExists(virtualPath)
  End If
End Function

Windows 98, Windows Server 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

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