This subclass of WebResponse is returned by WebRequest.GetResponse( ) when you request access to a file URI. Since this subclass does not add any new methods, there's no need to cast the return value to a FileWebResponse; the GetResponseStream( ) method returns a System.IO.Stream from which the file's contents can be retrieved.

public class FileWebResponse : WebResponse {
// Protected Constructors
   protected FileWebResponse(System.Runtime.Serialization.SerializationInfo serializationInfo,
       System.Runtime.Serialization.StreamingContext streamingContext);
// Public Instance Properties
   public override long ContentLength{get; }          
// overrides WebResponse
   public override string ContentType{get; }          
// overrides WebResponse
   public override WebHeaderCollection Headers{get; } 
// overrides WebResponse
   public override Uri ResponseUri{get; }
// overrides WebResponse
// Public Instance Methods
   public override void Close( );         
// overrides WebResponse
   public override Stream GetResponseStream( );        
// overrides WebResponse
// Protected Instance Methods
   protected virtual void Dispose(bool disposing);
}

Hierarchy

System.Object System.MarshalByRefObject WebResponse(System.Runtime.Serialization.ISerializable, System.IDisposable) FileWebResponse