ActivityDelegate Class

Represents an activity-based callback.

System.Object
  System.Activities.ActivityDelegate
    More...

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

[ContentPropertyAttribute("Handler")]
public abstract class ActivityDelegate

The ActivityDelegate type exposes the following members.

  NameDescription
Protected methodActivityDelegateCalled by derived class constructors to initialize the object.
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  NameDescription
Public propertyDisplayNameGets or sets an optional friendly name that is used for debugging, validation, exception handling, and tracking.
Public propertyHandlerGets or sets the activity that is represented by this ActivityDelegate.
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  NameDescription
Public methodEquals(Object)Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetHashCodeServes as a hash function for a particular type. (Inherited from Object.)
Protected methodGetResultArgumentWhen implemented in a derived class, returns the DelegateOutArgument of the ActivityDelegate.
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Protected methodOnGetRuntimeDelegateArgumentsSupplies a list of runtime arguments for the ActivityDelegate.
Public methodShouldSerializeDisplayNameIndicates whether the DisplayName property value should be serialized to XAML.
Public methodToStringReturns a String representation of the ActivityDelegate that contains the DisplayName. (Overrides Object.ToString().)
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Activity delegates enable activity authors to expose callbacks with specific signatures that users of the activity can provide activity-based handlers for. There are two types of activity delegates: ActivityAction<T> is used for invoking activities that do not have a return value, and ActivityFunc<TResult> is used for invoking activities that do have a return value. Activity delegates are useful in scenarios where a child activity must be constrained to having a certain signature.

.NET Framework

Supported in: 4

.NET Framework Client Profile

Supported in: 4

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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

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

System.Object
  System.Activities.ActivityDelegate
    System.Activities.ActivityAction
    System.Activities.ActivityAction<T>
    System.Activities.ActivityAction<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10>
    System.Activities.ActivityAction<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11>
    System.Activities.ActivityAction<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12>
    System.Activities.ActivityAction<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13>
    System.Activities.ActivityAction<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14>
    System.Activities.ActivityAction<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15>
    System.Activities.ActivityAction<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16>
    System.Activities.ActivityAction<T1, T2>
    System.Activities.ActivityAction<T1, T2, T3>
    System.Activities.ActivityAction<T1, T2, T3, T4>
    System.Activities.ActivityAction<T1, T2, T3, T4, T5>
    System.Activities.ActivityAction<T1, T2, T3, T4, T5, T6>
    System.Activities.ActivityAction<T1, T2, T3, T4, T5, T6, T7>
    System.Activities.ActivityAction<T1, T2, T3, T4, T5, T6, T7, T8>
    System.Activities.ActivityAction<T1, T2, T3, T4, T5, T6, T7, T8, T9>
    System.Activities.ActivityFunc<TResult>
    System.Activities.ActivityFunc<T1, T2, T3, T4, T5, T6, T7, T8, T9, TResult>
    System.Activities.ActivityFunc<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, TResult>
    System.Activities.ActivityFunc<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, TResult>
    System.Activities.ActivityFunc<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, TResult>
    System.Activities.ActivityFunc<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, TResult>
    System.Activities.ActivityFunc<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, TResult>
    System.Activities.ActivityFunc<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, TResult>
    System.Activities.ActivityFunc<T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, TResult>
    System.Activities.ActivityFunc<T, TResult>
    System.Activities.ActivityFunc<T1, T2, TResult>
    System.Activities.ActivityFunc<T1, T2, T3, TResult>
    System.Activities.ActivityFunc<T1, T2, T3, T4, TResult>
    System.Activities.ActivityFunc<T1, T2, T3, T4, T5, TResult>
    System.Activities.ActivityFunc<T1, T2, T3, T4, T5, T6, TResult>
    System.Activities.ActivityFunc<T1, T2, T3, T4, T5, T6, T7, TResult>
    System.Activities.ActivityFunc<T1, T2, T3, T4, T5, T6, T7, T8, TResult>
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