Compartilhar via

  • Artigo

CommunicationObject.BeginOpen Method (AsyncCallback, Object)

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Begins an asynchronous operation to close a communication object.

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

Syntax

'Declaration
Public Function BeginOpen ( _
    callback As AsyncCallback, _
    state As Object _
) As IAsyncResult

public IAsyncResult BeginOpen(
    AsyncCallback callback,
    Object state
)

Parameters

  • state
    Type: System.Object
    An object, specified by the application, that contains state information associated with the asynchronous open operation.

Return Value

Type: System.IAsyncResult
The IAsyncResult that references the asynchronous open operation.

Implements

ICommunicationObject.BeginOpen(AsyncCallback, Object)

Exceptions

Exception Condition
InvalidOperationException

The communication object is not in a Opened or Opening state and cannot be modified.
ObjectDisposedException

The communication object is in a Closing or Closed state and cannot be modified.
CommunicationObjectFaultedException

The communication object is in a Faulted state and cannot be modified.
TimeoutException

The default interval of time that was allotted for the operation was exceeded before the operation was completed.

Remarks

The OnBeginOpen(TimeSpan, AsyncCallback, Object) method calls OnOpening and OnBeginOpen(TimeSpan, AsyncCallback, Object) if the communication object is initially in the Created state.

To insert processing after a communication object transitions to a closing state due to the invocation of a synchronous Open operation, use the Open method.

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Windows Phone OS 7.0

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.