CodeActivity<TResult> Class
Definition
Important
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An abstract class for creating a custom activity with imperative behavior defined in the Execute(CodeActivityContext) method, giving access to variable and argument resolution and extensions.
generic <typename TResult>
public ref class CodeActivity abstract : System::Activities::Activity<TResult>public abstract class CodeActivity<TResult> : System.Activities.Activity<TResult>type CodeActivity<'Result> = class
inherit Activity<'Result>Public MustInherit Class CodeActivity(Of TResult)
Inherits Activity(Of TResult)Type Parameters
- TResult
The result returned by the activity.
- Inheritance
- Derived
Examples
The following example shows how to derive a class from CodeActivity<TResult>.
public sealed class Add : CodeActivity<int>
{
public InArgument<int> X { get; set; }
public InArgument<int> Y { get; set; }
protected override int Execute(CodeActivityContext context)
{
int x = X.Get(context);
int y = Y.Get(context);
return x + y;
}
}
Remarks
Derived classes can define a result value of the type specified in the type specifier of the class.
Constructors
| CodeActivity<TResult>() |
When implemented in a derived class, creates an instance of the derived class. |
Properties
| 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. |
| ImplementationVersion |
Gets or sets the implementation version of the activity. |
| ImplementationVersion |
Gets or sets the version of the implementation used. (Inherited from Activity) |
| Result |
Gets or sets the result argument for the Activity<TResult>. (Inherited from Activity<TResult>) |
| ResultType |
When implemented in a derived class, gets the type of an activity OutArgument. (Inherited from ActivityWithResult) |
Methods
| CacheMetadata(ActivityMetadata) |
Not implemented. Use CacheMetadata(CodeActivityMetadata) instead. |
| 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. |
| 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 a map for the dynamic update. |
| OnCreateDynamicUpdateMap(UpdateMapMetadata, Activity) |
Raises an event when creating dynamic update map. (Inherited from 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) |
