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CodeActivity<TResult> Class
Visual Studio 2010
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.
System::Object
System.Activities::Activity
System.Activities::ActivityWithResult
System.Activities::Activity<TResult>
System.Activities::CodeActivity<TResult>
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System.Activities::Activity
System.Activities::ActivityWithResult
System.Activities::Activity<TResult>
System.Activities::CodeActivity<TResult>
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Assembly: System.Activities (in System.Activities.dll)
The CodeActivity<TResult> type exposes the following members.
| Name | Description | |
|---|---|---|
![]() | CodeActivity<TResult> | 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.) |
![]() | 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.) |
| Name | Description | |
|---|---|---|
![]() | CacheMetadata(ActivityMetadata) | Not implemented. Use CacheMetadata(CodeActivityMetadata) 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 | 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 a hash function for a particular type. (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.) |
![]() | 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 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; } }
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.
System::Object
System.Activities::Activity
System.Activities::ActivityWithResult
System.Activities::Activity<TResult>
System.Activities::CodeActivity<TResult>
Microsoft.VisualBasic.Activities::VisualBasicReference<TResult>
Microsoft.VisualBasic.Activities::VisualBasicValue<TResult>
System.Activities.Expressions::Add<TLeft, TRight, TResult>
System.Activities.Expressions::And<TLeft, TRight, TResult>
System.Activities.Expressions::ArgumentReference<T>
System.Activities.Expressions::ArgumentValue<T>
System.Activities.Expressions::ArrayItemReference<TItem>
System.Activities.Expressions::ArrayItemValue<TItem>
System.Activities.Expressions::As<TOperand, TResult>
System.Activities.Expressions::Cast<TOperand, TResult>
System.Activities.Expressions::DelegateArgumentReference<T>
System.Activities.Expressions::DelegateArgumentValue<T>
System.Activities.Expressions::Divide<TLeft, TRight, TResult>
System.Activities.Expressions::Equal<TLeft, TRight, TResult>
System.Activities.Expressions::FieldReference<TOperand, TResult>
System.Activities.Expressions::FieldValue<TOperand, TResult>
System.Activities.Expressions::GreaterThan<TLeft, TRight, TResult>
System.Activities.Expressions::GreaterThanOrEqual<TLeft, TRight, TResult>
System.Activities.Expressions::IndexerReference<TOperand, TItem>
System.Activities.Expressions::LambdaReference<T>
System.Activities.Expressions::LambdaValue<TResult>
System.Activities.Expressions::LessThan<TLeft, TRight, TResult>
System.Activities.Expressions::LessThanOrEqual<TLeft, TRight, TResult>
System.Activities.Expressions::Literal<T>
System.Activities.Expressions::MultidimensionalArrayItemReference<TItem>
System.Activities.Expressions::Multiply<TLeft, TRight, TResult>
System.Activities.Expressions::New<TResult>
System.Activities.Expressions::NewArray<TResult>
System.Activities.Expressions::Not<TOperand, TResult>
System.Activities.Expressions::NotEqual<TLeft, TRight, TResult>
System.Activities.Expressions::Or<TLeft, TRight, TResult>
System.Activities.Expressions::PropertyReference<TOperand, TResult>
System.Activities.Expressions::PropertyValue<TOperand, TResult>
System.Activities.Expressions::Subtract<TLeft, TRight, TResult>
System.Activities.Expressions::ValueTypeFieldReference<TOperand, TResult>
System.Activities.Expressions::ValueTypeIndexerReference<TOperand, TItem>
System.Activities.Expressions::ValueTypePropertyReference<TOperand, TResult>
System.Activities.Expressions::VariableReference<T>
System.Activities.Expressions::VariableValue<T>
System.Activities.Statements::ExistsInCollection<T>
System.Activities.Statements::RemoveFromCollection<T>
System.Activities.Validation::GetChildSubtree
System.Activities.Validation::GetParentChain
System.Activities.Validation::GetWorkflowTree
System.Activities::Activity
System.Activities::ActivityWithResult
System.Activities::Activity<TResult>
System.Activities::CodeActivity<TResult>
Microsoft.VisualBasic.Activities::VisualBasicReference<TResult>
Microsoft.VisualBasic.Activities::VisualBasicValue<TResult>
System.Activities.Expressions::Add<TLeft, TRight, TResult>
System.Activities.Expressions::And<TLeft, TRight, TResult>
System.Activities.Expressions::ArgumentReference<T>
System.Activities.Expressions::ArgumentValue<T>
System.Activities.Expressions::ArrayItemReference<TItem>
System.Activities.Expressions::ArrayItemValue<TItem>
System.Activities.Expressions::As<TOperand, TResult>
System.Activities.Expressions::Cast<TOperand, TResult>
System.Activities.Expressions::DelegateArgumentReference<T>
System.Activities.Expressions::DelegateArgumentValue<T>
System.Activities.Expressions::Divide<TLeft, TRight, TResult>
System.Activities.Expressions::Equal<TLeft, TRight, TResult>
System.Activities.Expressions::FieldReference<TOperand, TResult>
System.Activities.Expressions::FieldValue<TOperand, TResult>
System.Activities.Expressions::GreaterThan<TLeft, TRight, TResult>
System.Activities.Expressions::GreaterThanOrEqual<TLeft, TRight, TResult>
System.Activities.Expressions::IndexerReference<TOperand, TItem>
System.Activities.Expressions::LambdaReference<T>
System.Activities.Expressions::LambdaValue<TResult>
System.Activities.Expressions::LessThan<TLeft, TRight, TResult>
System.Activities.Expressions::LessThanOrEqual<TLeft, TRight, TResult>
System.Activities.Expressions::Literal<T>
System.Activities.Expressions::MultidimensionalArrayItemReference<TItem>
System.Activities.Expressions::Multiply<TLeft, TRight, TResult>
System.Activities.Expressions::New<TResult>
System.Activities.Expressions::NewArray<TResult>
System.Activities.Expressions::Not<TOperand, TResult>
System.Activities.Expressions::NotEqual<TLeft, TRight, TResult>
System.Activities.Expressions::Or<TLeft, TRight, TResult>
System.Activities.Expressions::PropertyReference<TOperand, TResult>
System.Activities.Expressions::PropertyValue<TOperand, TResult>
System.Activities.Expressions::Subtract<TLeft, TRight, TResult>
System.Activities.Expressions::ValueTypeFieldReference<TOperand, TResult>
System.Activities.Expressions::ValueTypeIndexerReference<TOperand, TItem>
System.Activities.Expressions::ValueTypePropertyReference<TOperand, TResult>
System.Activities.Expressions::VariableReference<T>
System.Activities.Expressions::VariableValue<T>
System.Activities.Statements::ExistsInCollection<T>
System.Activities.Statements::RemoveFromCollection<T>
System.Activities.Validation::GetChildSubtree
System.Activities.Validation::GetParentChain
System.Activities.Validation::GetWorkflowTree
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