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WebException Class

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

Namespace:  System.Net
Assemblies:   System.Net.Requests (in System.Net.Requests.dll)
  System (in System.dll)

public class WebException : InvalidOperationException

The WebException type exposes the following members.

  NameDescription
Public methodSupported by Portable Class LibraryWebException()Initializes a new instance of the WebException class.
Public methodSupported by Portable Class LibraryWebException(String)Initializes a new instance of the WebException class with the specified error message.
Protected methodWebException(SerializationInfo, StreamingContext)Initializes a new instance of the WebException class from the specified SerializationInfo and StreamingContext instances.
Public methodSupported by Portable Class LibraryWebException(String, Exception)Initializes a new instance of the WebException class with the specified error message and nested exception.
Public methodSupported by Portable Class LibraryWebException(String, WebExceptionStatus)Initializes a new instance of the WebException class with the specified error message and status.
Public methodSupported by Portable Class LibraryWebException(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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  NameDescription
Public propertySupported by Portable Class LibraryDataGets a collection of key/value pairs that provide additional user-defined information about the exception. (Inherited from Exception.)
Public propertySupported by Portable Class LibraryHelpLinkGets or sets a link to the help file associated with this exception. (Inherited from Exception.)
Public propertySupported by Portable Class LibraryHResultGets or sets HRESULT, a coded numerical value that is assigned to a specific exception. (Inherited from Exception.)
Public propertySupported by Portable Class LibraryInnerExceptionGets the Exception instance that caused the current exception. (Inherited from Exception.)
Public propertySupported by Portable Class LibraryMessageGets a message that describes the current exception. (Inherited from Exception.)
Public propertySupported by Portable Class LibraryResponseGets the response that the remote host returned.
Public propertySupported by Portable Class LibrarySourceGets or sets the name of the application or the object that causes the error. (Inherited from Exception.)
Public propertySupported by Portable Class LibraryStackTraceGets a string representation of the immediate frames on the call stack. (Inherited from Exception.)
Public propertySupported by Portable Class LibraryStatusGets the status of the response.
Public propertyTargetSiteGets the method that throws the current exception. (Inherited from Exception.)
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  NameDescription
Public methodSupported by Portable Class LibraryEquals(Object)Determines whether the specified object is equal to the current object. (Inherited from Object.)
Protected methodSupported by Portable Class LibraryFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodSupported by Portable Class LibraryGetBaseExceptionWhen overridden in a derived class, returns the Exception that is the root cause of one or more subsequent exceptions. (Inherited from Exception.)
Public methodSupported by Portable Class LibraryGetHashCodeServes as the default hash function. (Inherited from Object.)
Public methodGetObjectData(SerializationInfo, StreamingContext)When overridden in a derived class, sets the SerializationInfo with information about the exception. (Inherited from Exception.)
Public methodGetObjectData(SerializationInfo, StreamingContext)Infrastructure. Populates a SerializationInfo instance with the data needed to serialize the WebException. (Overrides Exception.GetObjectData(SerializationInfo, StreamingContext).)
Public methodGetTypeGets the runtime type of the current instance. (Inherited from Exception.)
Protected methodSupported by Portable Class LibraryMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodSupported by Portable Class LibraryToStringCreates and returns a string representation of the current exception. (Inherited from Exception.)
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  NameDescription
Protected eventSerializeObjectStateOccurs 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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  NameDescription
Explicit interface implemetationPrivate methodISerializable.GetObjectDataInfrastructure. 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: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8

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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