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WebException Class

.NET Framework 4

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

System.Object
  System.Exception
    System.SystemException
      System.InvalidOperationException
        System.Net.WebException

Namespace:  System.Net
Assembly:  System (in System.dll)
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[SerializableAttribute]
public class WebException : InvalidOperationException, 
	ISerializable

The WebException type exposes the following members.

  Name Description
Public method Supported by Portable Class Library WebException() Initializes a new instance of the WebException class.
Public method Supported by Portable Class Library WebException(String) Initializes a new instance of the WebException class with the specified error message.
Protected method WebException(SerializationInfo, StreamingContext) Initializes a new instance of the WebException class from the specified SerializationInfo and StreamingContext instances.
Public method Supported by Portable Class Library WebException(String, Exception) Initializes a new instance of the WebException class with the specified error message and nested exception.
Public method Supported by Portable Class Library WebException(String, WebExceptionStatus) Initializes a new instance of the WebException class with the specified error message and status.
Public method Supported by Portable Class Library WebException(String, Exception, WebExceptionStatus, WebResponse) Initializes a new instance of the WebException class with the specified error message, nested exception, status, and response.
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  Name Description
Public property Data Gets a collection of key/value pairs that provide additional user-defined information about the exception. (Inherited from Exception.)
Public property HelpLink Gets or sets a link to the help file associated with this exception. (Inherited from Exception.)
Protected property Supported by Portable Class Library HResult Gets or sets HRESULT, a coded numerical value that is assigned to a specific exception. (Inherited from Exception.)
Public property Supported by Portable Class Library InnerException Gets the Exception instance that caused the current exception. (Inherited from Exception.)
Public property Supported by Portable Class Library Message Gets a message that describes the current exception. (Inherited from Exception.)
Public property Supported by Portable Class Library Response Gets the response that the remote host returned.
Public property Source Gets or sets the name of the application or the object that causes the error. (Inherited from Exception.)
Public property Supported by Portable Class Library StackTrace Gets a string representation of the immediate frames on the call stack. (Inherited from Exception.)
Public property Supported by Portable Class Library Status Gets the status of the response.
Public property TargetSite Gets the method that throws the current exception. (Inherited from Exception.)
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  Name Description
Public method Supported by Portable Class Library Equals(Object) Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected method Supported by Portable Class Library Finalize Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public method Supported by Portable Class Library GetBaseException When overridden in a derived class, returns the Exception that is the root cause of one or more subsequent exceptions. (Inherited from Exception.)
Public method Supported by Portable Class Library GetHashCode Serves as a hash function for a particular type. (Inherited from Object.)
Public method GetObjectData Infrastructure. Populates a SerializationInfo instance with the data needed to serialize the WebException. (Overrides Exception.GetObjectData(SerializationInfo, StreamingContext).)
Public method GetType Gets the runtime type of the current instance. (Inherited from Exception.)
Protected method Supported by Portable Class Library MemberwiseClone Creates a shallow copy of the current Object. (Inherited from Object.)
Public method Supported by Portable Class Library ToString Creates and returns a string representation of the current exception. (Inherited from Exception.)
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  Name Description
Protected event SerializeObjectState Occurs when an exception is serialized to create an exception state object that contains serialized data about the exception. (Inherited from Exception.)
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  Name Description
Explicit interface implemetation Private method ISerializable.GetObjectData Infrastructure. Serializes this instance into the specified SerializationInfo object.
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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.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
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