ActivityAction<T1,T2,T3,T4> ActivityAction<T1,T2,T3,T4> ActivityAction<T1,T2,T3,T4> ActivityAction<T1,T2,T3,T4> Class


Defines an activity delegate that has four in arguments and does not return a value.

generic <typename T1, typename T2, typename T3, typename T4>
public ref class ActivityAction sealed : System::Activities::ActivityDelegate
public sealed class ActivityAction<T1,T2,T3,T4> : System.Activities.ActivityDelegate
type ActivityAction<'T1, 'T2, 'T3, 'T4> = class
    inherit ActivityDelegate
Public NotInheritable Class ActivityAction(Of T1, T2, T3, T4)
Inherits ActivityDelegate

Type Parameters


The type of the first in argument of the activity delegate.


The type of the second in argument of the activity delegate.


The type of the third in argument of the activity delegate.


The type of the fourth in argument of the activity delegate.



An activity delegate allows a developer to define the required signature of an activity that will be specified by a third party.

There are multiple generic versions of this type that take from 1 to 16 arguments for the activity that is called. There are also ActivityFunc types for activity delegates that return values.


ActivityAction<T1,T2,T3,T4>() ActivityAction<T1,T2,T3,T4>() ActivityAction<T1,T2,T3,T4>() ActivityAction<T1,T2,T3,T4>()

Creates a new instance of the ActivityAction<T1,T2,T3,T4> class.


Argument1 Argument1 Argument1 Argument1

Gets or sets the first in argument of the activity delegate.

Argument2 Argument2 Argument2 Argument2

Gets or sets the second in argument of the activity delegate.

Argument3 Argument3 Argument3 Argument3

Gets or sets the third in argument of the activity delegate.

Argument4 Argument4 Argument4 Argument4

Gets or sets the fourth in argument of the activity delegate.

DisplayName DisplayName DisplayName DisplayName

Gets or sets an optional friendly name that is used for debugging, validation, exception handling, and tracking.

(Inherited from ActivityDelegate)
Handler Handler Handler Handler

Gets or sets the activity that is represented by this ActivityDelegate.

(Inherited from ActivityDelegate)


Equals(Object) Equals(Object) Equals(Object) Equals(Object)

Determines whether the specified object is equal to the current object.

(Inherited from Object)
GetHashCode() GetHashCode() GetHashCode() GetHashCode()

Serves as the default hash function.

(Inherited from Object)
GetResultArgument() GetResultArgument() GetResultArgument() GetResultArgument()

When implemented in a derived class, returns the DelegateOutArgument of the ActivityDelegate.

(Inherited from ActivityDelegate)
GetType() GetType() GetType() GetType()

Gets the Type of the current instance.

(Inherited from Object)
MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

Creates a shallow copy of the current Object.

(Inherited from Object)
OnGetRuntimeDelegateArguments(IList<RuntimeDelegateArgument>) OnGetRuntimeDelegateArguments(IList<RuntimeDelegateArgument>) OnGetRuntimeDelegateArguments(IList<RuntimeDelegateArgument>) OnGetRuntimeDelegateArguments(IList<RuntimeDelegateArgument>)

Supplies a list of runtime arguments for the ActivityDelegate.

(Inherited from ActivityDelegate)
ShouldSerializeDisplayName() ShouldSerializeDisplayName() ShouldSerializeDisplayName() ShouldSerializeDisplayName()

Indicates whether the DisplayName property value should be serialized to XAML.

(Inherited from ActivityDelegate)
ToString() ToString() ToString() ToString()

Returns a String representation of the ActivityDelegate that contains the DisplayName.

(Inherited from ActivityDelegate)

Applies to

See also