ActivityExecutionContext.CancelActivity Method (System.Workflow.ComponentModel)

Switch View

CancelActivity Method

Collapse All

Language Filter

This page is specific to

Microsoft Visual Studio 2008/.NET Framework 3.5

Other versions are also available for the following:

.NET Framework Class Library

ActivityExecutionContext..::.CancelActivity Method

Called by a composite activity to schedule the cancellation of a child activity. The workflow runtime disallows cancellation of a child activity that is not in the Executing state.

Namespace: System.Workflow.ComponentModel
Assembly: System.Workflow.ComponentModel (in System.Workflow.ComponentModel.dll)

Syntax

Visual Basic (Declaration)

Public Sub CancelActivity ( _
    activity As Activity _
)

Visual Basic (Usage)

Dim instance As ActivityExecutionContext
Dim activity As Activity

instance.CancelActivity(activity)

public void CancelActivity(
    Activity activity
)

Visual C++

public:
void CancelActivity(
    Activity^ activity
)

JScript

public function CancelActivity(
    activity : Activity
)

Parameters

activity: Type: System.Workflow.ComponentModel..::.Activity
The canceled Activity.

Exceptions

Exception	Condition
ArgumentNullException	activity is nullNothingnullptra null reference (Nothing in Visual Basic).
ArgumentException	activity is not a valid child of the ActivityExecutionContext. This means that either the argument is equal to the associated Activity or that the argument is not in the commented state and is a child of the Activity associated with this ActivityExecutionContext.
ObjectDisposedException	The ActivityExecutionContext has been disposed.
InvalidOperationException	activity is not in the Executing state.

.NET Framework Security

Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.

Platforms

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

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

Version Information

.NET Framework

Supported in: 3.5, 3.0

Reference

ActivityExecutionContext Class

ActivityExecutionContext Members

System.Workflow.ComponentModel Namespace