IfElseActivity Class
Conditionally runs one of two or more activities of type IfElseBranchActivity. This class cannot be inherited.
Assembly: System.Workflow.Activities (in System.Workflow.Activities.dll)
System.Workflow.ComponentModel::DependencyObject
System.Workflow.ComponentModel::Activity
System.Workflow.ComponentModel::CompositeActivity
System.Workflow.Activities::IfElseActivity
[ToolboxBitmapAttribute((IfElseActivity^::typeid), "Resources.Decision.png")] [ObsoleteAttribute("The System.Workflow.* types are deprecated. Instead, please use the new types from System.Activities.*")] public ref class IfElseActivity sealed : CompositeActivity, IActivityEventListener<ActivityExecutionStatusChangedEventArgs^>
| Name | Description | |
|---|---|---|
![]() | IfElseActivity() | Initializes a new instance of the IfElseActivity class. |
![]() | IfElseActivity(String^) | Initializes a new instance of the IfElseActivity 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.) |
![]() | Description | |
![]() | DesignMode | Gets the value that indicates whether this instance is in design or run-time mode.(Inherited from DependencyObject.) |
![]() | 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 | |
|---|---|---|
![]() | AddBranch(ICollection<Activity^>^) | Adds a new branch to the IfElseActivity using a collection of new activities to add to the new branch. |
![]() | AddBranch(ICollection<Activity^>^, ActivityCondition^) | Adds a new branch to the IfElseActivity using a collection of new activities to add to the new branch. |
![]() | AddHandler(DependencyProperty^, Object^) | Adds a handler for an event of a DependencyObject.(Inherited from DependencyObject.) |
![]() | Cancel(ActivityExecutionContext^) | Called by the workflow runtime to cancel execution of an activity that is currently executing.(Inherited from Activity.) |
![]() | Clone() | |
![]() | Dispose() | Releases all the resources used by the DependencyObject.(Inherited from DependencyObject.) |
![]() | Equals(Object^) | Determines whether the specified object is equal to the current object.(Inherited from Object.) |
![]() | Execute(ActivityExecutionContext^) | Called by the workflow runtime to execute an activity. (Inherited from Activity.) |
![]() | GetActivityByName(String^) | |
![]() | GetActivityByName(String^, Boolean) | |
![]() | GetBinding(DependencyProperty^) | Provides access to the ActivityBind associated with the specific DependencyProperty.(Inherited from DependencyObject.) |
![]() | GetHashCode() | Serves as the default hash function. (Inherited from Object.) |
![]() | GetType() | |
![]() | GetValue(DependencyProperty^) | Provides access to the value of the designated DependencyProperty.(Inherited from DependencyObject.) |
![]() | GetValueBase(DependencyProperty^) | Provides access to the bound object of a DependencyProperty and bypasses the GetValue override.(Inherited from DependencyObject.) |
![]() | HandleFault(ActivityExecutionContext^, Exception^) | Called when an exception is raised within the context of the execution of this instance.(Inherited from CompositeActivity.) |
![]() | Initialize(IServiceProvider^) | Initializes all appropriate child activities of this instance and the specified IServiceProvider.(Inherited from CompositeActivity.) |
![]() | Invoke<T>(EventHandler<T>^, T) | Subscribes an EventHandler and invokes that delegate.(Inherited from Activity.) |
![]() | Invoke<T>(IActivityEventListener<T>^, T) | Subscribes an IActivityEventListener<T> and invokes that delegate.(Inherited from Activity.) |
![]() | IsBindingSet(DependencyProperty^) | Indicates whether the value of a DependencyProperty is set as a binding. See SetBinding.(Inherited from DependencyObject.) |
![]() | MetaEquals(DependencyObject^) | Determines whether the metaproperties of this DependencyObject equals the metaproperties of the parameterized DependencyObject.(Inherited from DependencyObject.) |
![]() | OnActivityChangeAdd(ActivityExecutionContext^, Activity^) | Calls when an activity is added.(Inherited from CompositeActivity.) |
![]() | OnActivityChangeRemove(ActivityExecutionContext^, Activity^) | Called when an activity is removed.(Inherited from CompositeActivity.) |
![]() | OnActivityExecutionContextLoad(IServiceProvider^) | Called by the workflow runtime engine every time the ActivityExecutionContext for this activity is loaded.(Inherited from CompositeActivity.) |
![]() | OnActivityExecutionContextUnload(IServiceProvider^) | Called by the workflow runtime engine every time the ActivityExecutionContext for this activity is unloaded.(Inherited from CompositeActivity.) |
![]() | OnWorkflowChangesCompleted(ActivityExecutionContext^) | Called after changes have been made to the collection Activities of this instance.(Inherited from CompositeActivity.) |
![]() | RaiseEvent(DependencyProperty^, Object^, EventArgs^) | |
![]() | RaiseGenericEvent<T>(DependencyProperty^, Object^, T) | Raises the event associated with the referenced DependencyProperty.(Inherited from Activity.) |
![]() | RegisterForStatusChange(DependencyProperty^, IActivityEventListener<ActivityExecutionStatusChangedEventArgs^>^) | Registers the specified DependencyProperty for the status change event.(Inherited from Activity.) |
![]() | RemoveHandler(DependencyProperty^, Object^) | Removes an EventHandler from an associated DependencyProperty.(Inherited from DependencyObject.) |
![]() | RemoveProperty(DependencyProperty^) | Removes a DependencyProperty from the DependencyObject.(Inherited from DependencyObject.) |
![]() | Save(Stream^) | |
![]() | Save(Stream^, IFormatter^) | Writes the Activity to a Stream for persistence using the custom IFormatter provided for serialization.(Inherited from Activity.) |
![]() | SetBinding(DependencyProperty^, ActivityBind^) | Sets the ActivityBind for the specified DependencyProperty. (Inherited from DependencyObject.) |
![]() | SetReadOnlyPropertyValue(DependencyProperty^, Object^) | Sets the value of a DependencyProperty, which is read-only.(Inherited from DependencyObject.) |
![]() | SetValue(DependencyProperty^, Object^) | Sets the value of the DependencyProperty to the object.(Inherited from DependencyObject.) |
![]() | SetValueBase(DependencyProperty^, Object^) | Sets the value of the DependencyProperty to the specified Object, bypassing the SetValue.(Inherited from DependencyObject.) |
![]() | ToString() | Provides a string that represents this instance.(Inherited from Activity.) |
![]() | Uninitialize(IServiceProvider^) | Called by the workflow runtime engine when an activity transitions into the Closed state from the Initialized state.(Inherited from CompositeActivity.) |
![]() | UnregisterForStatusChange(DependencyProperty^, IActivityEventListener<ActivityExecutionStatusChangedEventArgs^>^) | Un-registers the specified DependencyProperty for the status change event.(Inherited from Activity.) |
| 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 a change the activity execution status occurs. |
Note |
|---|
This material discusses types and namespaces that are obsolete. For more information, see Deprecated Types in Windows Workflow Foundation 4.5. |
This activity provides semantics similar to two If-ElseIf statements.
IfElseActivity contains an ordered set of IfElseBranchActivity classes and runs the first branch when the condition evaluates to true. The final branch is not required to have a condition, in which case it always evaluates to true.
A IfElseActivity can complete without having run any child activity, if no conditions are satisfied.
The following code example shows how to create a new instance of the IfElseActivity class and add two IfElseBranchActivity classes to it. This code example is part of the SequentialWorkflowWithParameters SDK Sample from the SequentialWorkflow.cs file. For more information, seeSequential Workflow With Parameters.
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 IfElse Activity
Using Conditions in Workflows








