This exception represents an error that occurred while using a protocol-specific implementation of WebRequest. In the case of some protocols, such as HTTP, the exception's Response property contains information about the error that occurred.

public class WebException : InvalidOperationException {
// Public Constructors
   public WebException( );
   public WebException(string message);
   public WebException(string message, Exception innerException);
   public WebException(string message, Exception innerException, WebExceptionStatus status, 
        WebResponse response);
   public WebException(string message, WebExceptionStatus status);
// Protected Constructors
   protected WebException(System.Runtime.Serialization.SerializationInfo serializationInfo,
       System.Runtime.Serialization.StreamingContext streamingContext);
// Public Instance Properties
   public WebResponse Response{get; }
   public WebExceptionStatus Status{get; }
}

Hierarchy

System.Object System.Exception(System.Runtime.Serialization.ISerializable) System.SystemException System.InvalidOperationException WebException