VirtualPathProvider.FileExists Method (String)


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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 virtual bool FileExists(
	string virtualPath


Type: System.String

The path to the virtual file.

Return Value

Type: System.Boolean

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 override bool FileExists(string virtualPath)
  if (IsPathVirtual(virtualPath))
    SampleVirtualFile file = (SampleVirtualFile)GetFile(virtualPath);
    return file.Exists;
    return Previous.FileExists(virtualPath);

.NET Framework
Available since 2.0
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