WebException Class

The exception that is thrown when an error occurs while accessing the network through a pluggable protocol.

Namespace: System.Net
Assembly: System (in system.dll)

public class WebException : InvalidOperationException, ISerializable
/** @attribute SerializableAttribute() */ 
public class WebException extends InvalidOperationException implements ISerializable
public class WebException extends InvalidOperationException implements ISerializable
Not applicable.

The WebException class is thrown by classes descended from WebRequest and WebResponse that implement pluggable protocols for accessing the Internet.

When WebException is thrown by a descendant of the WebRequest class, the Response property provides the Internet response to the application.


Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, 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, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0