WebRequest.BeginGetResponse Method (AsyncCallback, Object)

 
System_CAPS_noteNote

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When overridden in a descendant class, begins an asynchronous request for an Internet resource.

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

[<HostProtectionAttribute(SecurityAction.LinkDemand, ExternalThreading = true)>]
abstract BeginGetResponse : 
        callback:AsyncCallback *
        state:Object -> IAsyncResult
[<HostProtectionAttribute(SecurityAction.LinkDemand, ExternalThreading = true)>]
override BeginGetResponse : 
        callback:AsyncCallback *
        state:Object -> IAsyncResult

Parameters

callback
Type: System.AsyncCallback

The AsyncCallback delegate.

state
Type: System.Object

An object containing state information for this asynchronous request.

Return Value

Type: System.IAsyncResult

An IAsyncResult that references the asynchronous request.

Exception Condition
NotImplementedException

Any attempt is made to access the method, when the method is not overridden in a descendant class.

The BeginGetResponse method starts an asynchronous request for a response. The callback method that implements the AsyncCallback delegate uses the EndGetResponse method to return the WebResponse from the Internet resource.

System_CAPS_noteNote

The WebRequest class is an abstract class. The actual behavior of WebRequest instances at run time is determined by the descendant class returned by the WebRequest.Create method. For more information about default values and exceptions, see the documentation for the descendant classes, such as HttpWebRequest and FileWebRequest.

System_CAPS_noteNote

If a WebException is thrown, use the Response and Status properties of the exception to determine the response from the server.

The following example uses BeginGetResponse to asynchronously request the target resource. When the resource has been obtained, the specified callback method will be executed.

No code example is currently available or this language may not be supported.

Universal Windows Platform
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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