VirtualPathProvider.DirectoryExists(String) Method
Definition
Important
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Gets a value that indicates whether a directory exists in the virtual file system.
public:
virtual bool DirectoryExists(System::String ^ virtualDir);public virtual bool DirectoryExists (string virtualDir);abstract member DirectoryExists : string -> bool
override this.DirectoryExists : string -> boolPublic Overridable Function DirectoryExists (virtualDir As String) As BooleanParameters
- virtualDir
- String
The path to the virtual directory.
Returns
true if the directory exists in the virtual file system; otherwise, false.
Examples
The following code example is an implementation of the DirectoryExists 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 override bool DirectoryExists(string virtualDir)
{
if (IsPathVirtual(virtualDir))
{
SampleVirtualDirectory dir = (SampleVirtualDirectory)GetDirectory(virtualDir);
return dir.Exists;
}
else
{
return Previous.DirectoryExists(virtualDir);
}
}
Public Overrides Function DirectoryExists(ByVal virtualDir As String) As Boolean
If (IsPathVirtual(virtualDir)) Then
Dim dir As SampleVirtualDirectory
dir = CType(GetDirectory(virtualDir), SampleVirtualDirectory)
Return dir.exists
Else
Return Previous.DirectoryExists(virtualDir)
End If
End Function
Remarks
Override the DirectoryExists method to indicate to the compilation system that the resource represented by virtualDir exists in the virtual file system provided by this VirtualPathProvider instance.
If your custom VirtualPathProvider class does not support directories, the DirectoryExists method should return false.
Note
If your virtual file system will contain themes for the Web site (by creating a virtual App_Themes directory), your custom VirtualPathProvider class must support directories.
