Activity Class

Definition

Namespace:

System.Activities

Assembly:

System.Activities.dll

An abstract base class used to create composite activities from pre-existing Activity objects.

public ref class Activity abstract

[System.Windows.Markup.ContentProperty("Implementation")]
public abstract class Activity

[<System.Windows.Markup.ContentProperty("Implementation")>]
type Activity = class

Public MustInherit Class Activity

Inheritance

Object

Activity

Derived

System.Activities.ActivityWithResult

System.Activities.AsyncCodeActivity

System.Activities.CodeActivity

System.Activities.DynamicActivity

System.Activities.NativeActivity

System.ServiceModel.Activities.Receive

System.ServiceModel.Activities.ReceiveReply

System.ServiceModel.Activities.Send

System.ServiceModel.Activities.SendReply

Attributes

ContentPropertyAttribute

Examples

The following example shows a simple implementation of an Activity derived class.

Remarks

Activity is the base class in the activity type hierarchy. All other activity types such as CodeActivity, NativeActivity, AsyncCodeActivity, DynamicActivity, and ActivityWithResult derive from this class.

Constructors

Activity()

Initializes a new instance of the Activity class.

Properties

CacheId	Gets the identifier of the cache that is unique within the scope of the workflow definition.
Constraints	Gets a collection of Constraint activities that can be configured to provide validation for the Activity.
DisplayName	Gets or sets an optional friendly name that is used for debugging, validation, exception handling, and tracking.
Id	Gets an identifier that is unique in the scope of the workflow definition.
Implementation	Gets or sets the delegate that returns an Activity that contains the execution logic.
ImplementationVersion	Gets or sets the version of the implementation used.

Methods

CacheMetadata(ActivityMetadata)	Creates and validates a description of the activity's arguments, variables, child activities, and activity delegates.
Equals(Object)	Determines whether the specified object is equal to the current object. (Inherited from Object)
GetHashCode()	Serves as the default hash function. (Inherited from Object)
GetType()	Gets the Type of the current instance. (Inherited from Object)
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
OnCreateDynamicUpdateMap(UpdateMapMetadata, Activity)	Raises an event when creating dynamic update map.
ShouldSerializeDisplayName()	Indicates whether the DisplayName property should be serialized.
ToString()	Returns a String that contains the Id and DisplayName of the Activity.