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

Visual Basic

<SerializableAttribute> _
Public Class WebException _
    Inherits InvalidOperationException _
    Implements ISerializable

C#

[SerializableAttribute]
public class WebException : InvalidOperationException, 
    ISerializable

Visual C++

[SerializableAttribute]
public ref class WebException : public InvalidOperationException, 
    ISerializable

F#

[<SerializableAttribute>]
type WebException =  
    class
        inherit InvalidOperationException
        interface ISerializable
    end

	Name	Description
	WebException()()()	Initializes a new instance of the WebException class.
	WebException(String)	Initializes a new instance of the WebException class with the specified error message.
	WebException(SerializationInfo, StreamingContext)	Initializes a new instance of the WebException class from the specified SerializationInfo and StreamingContext instances.
	WebException(String, Exception)	Initializes a new instance of the WebException class with the specified error message and nested exception.
	WebException(String, WebExceptionStatus)	Initializes a new instance of the WebException class with the specified error message and status.
	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
	Data	Gets a collection of key/value pairs that provide additional user-defined information about the exception. (Inherited from Exception.)
	HelpLink	Gets or sets a link to the help file associated with this exception. (Inherited from Exception.)
	HResult	Gets or sets HRESULT, a coded numerical value that is assigned to a specific exception. (Inherited from Exception.)
	InnerException	Gets the Exception instance that caused the current exception. (Inherited from Exception.)
	Message	Gets a message that describes the current exception. (Inherited from Exception.)
	Response	Gets the response that the remote host returned.
	Source	Gets or sets the name of the application or the object that causes the error. (Inherited from Exception.)
	StackTrace	Gets a string representation of the immediate frames on the call stack. (Inherited from Exception.)
	Status	Gets the status of the response.
	TargetSite	Gets the method that throws the current exception. (Inherited from Exception.)

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	Name	Description
	Equals(Object)	Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
	GetBaseException	When overridden in a derived class, returns the Exception that is the root cause of one or more subsequent exceptions. (Inherited from Exception.)
	GetHashCode	Serves as a hash function for a particular type. (Inherited from Object.)
	GetObjectData	Infrastructure. Populates a SerializationInfo instance with the data needed to serialize the WebException. (Overrides Exception..::.GetObjectData(SerializationInfo, StreamingContext).)
	GetType	Gets the runtime type of the current instance. (Inherited from Exception.)
	MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object.)
	ToString	Creates and returns a string representation of the current exception. (Inherited from Exception.)

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	Name	Description
	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
	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.

Reference