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CommunicationObject.OnBeginOpen Method

Inserts processing on a communication object after it transitions to the opening state due to the invocation of an asynchronous open operation.

Namespace:  System.ServiceModel.Channels
Assemblies:   System.ServiceModel (in System.ServiceModel.dll)
  System.ServiceModel.Primitives (in System.ServiceModel.Primitives.dll)

protected abstract IAsyncResult OnBeginOpen(
	TimeSpan timeout,
	AsyncCallback callback,
	Object state
)

Parameters

timeout
Type: System.TimeSpan

The Timespan that specifies how long the on open operation has to complete before timing out.

callback
Type: System.AsyncCallback

The AsyncCallback delegate that receives notification of the completion of the asynchronous on open operation.

state
Type: System.Object

An object, specified by the application, that contains state information associated with the asynchronous on open operation.

Return Value

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

ExceptionCondition
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.

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

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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