WhileActivity Class
Runs a child activity iteratively as long as a certain condition is true.
Assembly: System.Workflow.Activities (in System.Workflow.Activities.dll)
System.Workflow.ComponentModel::DependencyObject
System.Workflow.ComponentModel::Activity
System.Workflow.ComponentModel::CompositeActivity
System.Workflow.Activities::WhileActivity
[ToolboxBitmapAttribute((WhileActivity^::typeid), "Resources.While.png")] [ObsoleteAttribute("The System.Workflow.* types are deprecated. Instead, please use the new types from System.Activities.*")] public ref class WhileActivity sealed : CompositeActivity, IActivityEventListener<ActivityExecutionStatusChangedEventArgs^>
| Name | Description | |
|---|---|---|
![]() | WhileActivity() | Initializes a new instance of the WhileActivity class. |
![]() | WhileActivity(String^) | Initializes a new instance of the WhileActivity class using the name of the activity. |
| Name | Description | |
|---|---|---|
![]() | Activities | Gets the object representing the collection, ActivityCollection, of all child activities.(Inherited from CompositeActivity.) |
![]() | CanModifyActivities | Gets or sets a value which controls whether the individual activities within Activities can be modified.(Inherited from CompositeActivity.) |
![]() | Condition | Gets or sets a condition that determines whether the WhileActivity should run or finish. |
![]() | Description | |
![]() | DesignMode | Gets the value that indicates whether this instance is in design or run-time mode.(Inherited from DependencyObject.) |
![]() | DynamicActivity | Gets the dynamic child activities in the WhileActivity. |
![]() | Enabled | Gets or sets a value that indicates whether this instance is enabled for execution and validation.(Inherited from Activity.) |
![]() | EnabledActivities | Gets the read-only collection that represents the subset of Activities that are enabled. (Inherited from CompositeActivity.) |
![]() | ExecutionResult | Gets the ActivityExecutionResult of the last attempt to run this instance.(Inherited from Activity.) |
![]() | ExecutionStatus | Gets the current ActivityExecutionStatus of this instance.(Inherited from Activity.) |
![]() | IsDynamicActivity | Gets information about whether the activity is executing within the default ActivityExecutionContext of the workflow instance.(Inherited from Activity.) |
![]() | Name | Gets or sets the name of this instance. This name must conform to the variable naming convention of the programming language that is being used in the Workflow project.(Inherited from Activity.) |
![]() | Parent | Gets the CompositeActivity that contains this Activity.(Inherited from Activity.) |
![]() | QualifiedName | Gets the qualified name of the activity. Qualified activity names are always unique in a workflow instance.(Inherited from Activity.) |
![]() | Site | Gets or sets a reference to the Site component of the DependencyObject.(Inherited from DependencyObject.) |
![]() | UserData | Gets an IDictionary that associates custom data with this class instance.(Inherited from DependencyObject.) |
| Name | Description | |
|---|---|---|
![]() ![]() | ConditionProperty | Represents the DependencyProperty that targets the Condition property. |
| Name | Description | |
|---|---|---|
![]() | Canceling | Occurs when the activity execution is canceled. (Inherited from Activity.) |
![]() | Closed | |
![]() | Compensating | |
![]() | Executing | |
![]() | Faulting | Occurs when an exception is raised during the running of the instance.(Inherited from Activity.) |
![]() | StatusChanged | Occurs when the ActivityExecutionStatus of a running Activity changes.(Inherited from Activity.) |
| Name | Description | |
|---|---|---|
![]() ![]() | IComponent::Disposed | Represents the method that handles the Disposed event of a component.(Inherited from DependencyObject.) |
![]() ![]() | IActivityEventListener<ActivityExecutionStatusChangedEventArgs^>::OnEvent(Object^, ActivityExecutionStatusChangedEventArgs^) | Defines the processing procedure when the subscribed-to event occurs. |
Note |
|---|
This material discusses types and namespaces that are obsolete. For more information, see Deprecated Types in Windows Workflow Foundation 4.5. |
The WhileActivity is a CompositeActivity, meaning the WhileActivity can contain other activities.
Before each iteration, the Condition property is evaluated. If the Condition property evaluates to false, the WhileActivity immediately finishes.
The following code example demonstrates how to create a new instance of the WhileActivity class and add the ParallelActivity class to the WhileActivity class. This code example is part of the WhileAndParallel SDK Sample from the WhileAndParallelWorkflow.Designer.cs file. For more information, see Using While and Parallel.
Available since 3.0
Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
System.Workflow.Activities Namespace
Using the While Activity
Using Conditions in Workflows










