CodeActivity Class
An abstract class for creating a custom activity with imperative behavior defined with the Execute method, which gives access to variable and argument resolution and extensions.
Assembly: System.Activities (in System.Activities.dll)
System.Activities.Activity
System.Activities.CodeActivity
System.Activities.Statements.AddToCollection(Of T)
System.Activities.Statements.Assign
System.Activities.Statements.Assign(Of T)
System.Activities.Statements.ClearCollection(Of T)
System.Activities.Statements.Throw
System.Activities.Statements.WriteLine
| Name | Description | |
|---|---|---|
![]() | CodeActivity() | When implemented in a derived class, creates an instance of the derived class. |
| Name | Description | |
|---|---|---|
![]() | CacheId | Gets the identifier of the cache that is unique within the scope of the workflow definition.(Inherited from Activity.) |
![]() | Constraints | Gets a collection of Constraint activities that can be configured to provide validation for the Activity.(Inherited from Activity.) |
![]() | DisplayName | Gets or sets an optional friendly name that is used for debugging, validation, exception handling, and tracking.(Inherited from Activity.) |
![]() | Id | Gets an identifier that is unique in the scope of the workflow definition.(Inherited from Activity.) |
![]() | Implementation | Not supported.(Overrides Activity.Implementation.) |
![]() | ImplementationVersion | Gets or sets the implementation version of the activity.(Overrides Activity.ImplementationVersion.) |
| Name | Description | |
|---|---|---|
![]() | CacheMetadata(ActivityMetadata) | Not implemented. Use CacheMetadata instead.(Overrides Activity.CacheMetadata(ActivityMetadata).) |
![]() | CacheMetadata(CodeActivityMetadata) | 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.) |
![]() | Execute(CodeActivityContext) | When implemented in a derived class, performs the execution of the activity. |
![]() | Finalize() | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.) |
![]() | GetHashCode() | Serves as the default hash function. (Inherited from Object.) |
![]() | GetType() | |
![]() | MemberwiseClone() | |
![]() | OnCreateDynamicUpdateMap(UpdateMapMetadata, Activity) | Raises an event when creating a map for the dynamic update.(Overrides Activity.OnCreateDynamicUpdateMap(UpdateMapMetadata, Activity).) |
![]() | ShouldSerializeDisplayName() | Indicates whether the DisplayName property should be serialized.(Inherited from Activity.) |
![]() | ToString() | Returns a String that contains the Id and DisplayName of the Activity.(Inherited from Activity.) |
The following example shows how to implement a CodeActivity-derived activity.
public sealed class MessageBox : CodeActivity { public InArgument<string> Text{ get; set; } protected override void Execute(CodeActivityContext context) { System.Windows.Forms.MessageBox.Show(this.Text.Get(context)); } }
Available since 4.0
Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.



