Parallel Class

Article
05/19/2009

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A workflow element that executes all child activities simultaneously and asynchronously.

Namespace: System.Activities.Core
Assembly: System.Activities.Core (in System.Activities.Core.dll)

Syntax

'Declaration
<ContentPropertyAttribute("Branches")> _
Public NotInheritable Class Parallel _
    Inherits NativeActivity
'Usage
Dim instance As Parallel

[ContentPropertyAttribute("Branches")]
public sealed class Parallel : NativeActivity

[ContentPropertyAttribute(L"Branches")]
public ref class Parallel sealed : public NativeActivity

public final class Parallel extends NativeActivity

[<SealedAttribute>]
[<ContentPropertyAttribute("Branches")>]
type Parallel =  
    class
        inherit NativeActivity
    end

Remarks

A Parallel activity operates by simultaneously scheduling each WorkflowElement in its Branches collection at the start. It completes when all of its Branches complete or when its CompletionCondition property evaluates to true. While all the WorkflowElement objects run asynchronously, they do not execute on separate threads.

Inheritance Hierarchy

System.Object
  System.Activities.WorkflowElement
    System.Activities.NativeActivity
      System.Activities.Core.Parallel

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Platforms

Windows 7, Windows Vista, Windows XP SP2, 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: 4