BeginRequest Method (Message, AsyncCallback, Object)
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IRequestChannel.BeginRequest Method (Message, AsyncCallback, Object)

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Begins an asynchronous operation to transmit a request message to the reply-side of a request-reply message exchange.

Namespace:  System.ServiceModel.Channels
Assembly:  System.ServiceModel (in System.ServiceModel.dll)

'Declaration
Function BeginRequest ( _
	message As Message, _
	callback As AsyncCallback, _
	state As Object _
) As IAsyncResult

Parameters

message
Type: System.ServiceModel.Channels.Message
The request Message to be transmitted.
callback
Type: System.AsyncCallback
The AsyncCallback delegate that receives the notification of the completion of the asynchronous operation transmitting a request message.
state
Type: System.Object
An object, specified by the application, that contains state information associated with the asynchronous operation transmitting a request message.

Return Value

Type: System.IAsyncResult
The IAsyncResult that references the asynchronous message transmission.

If the request message is larger that the maximum message size allowed by the binding being used, a QuotaExceededException is thrown. The maximum message size is set by the MaxReceivedMessageSize property. The default value is 65536 bytes.

The following code illustrates how to implement this method:

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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