Handle Class

Definition

Namespace:

System.Activities

Assembly:

System.Activities.dll

Represents a type that has its lifetime controlled by the workflow runtime.

public ref class Handle abstract

[System.Runtime.Serialization.DataContract]
public abstract class Handle

[<System.Runtime.Serialization.DataContract>]
type Handle = class

Public MustInherit Class Handle

Inheritance

Object

Handle

Derived

System.Activities.BookmarkScopeHandle

System.Activities.ExclusiveHandle

System.Activities.NoPersistHandle

System.Activities.RuntimeTransactionHandle

System.ServiceModel.Activities.CorrelationHandle

Attributes

DataContractAttribute

Remarks

Types derived from Handle have their lifetimes controlled by the workflow runtime. For workflow variables of handle types, the runtime uses the required parameterless constructor to create an instance of the type, assigns it to the Variable, and calls OnInitialize when initializing the environment. When the variable goes out of scope, OnUninitialize is called.

Constructors

Handle()

Initializes a new instance of the Handle class.

Properties

ExecutionPropertyName	Gets the name to be used by this Handle when added to an activity's execution properties.
Owner	Gets the ActivityInstance that contains the Variable that contains the Handle.

Methods

Equals(Object)	Determines whether the specified object is equal to the current object. (Inherited from Object)
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)
OnInitialize(HandleInitializationContext)	Called by the workflow runtime when the environment that contains the Handle is initialized.
OnUninitialize(HandleInitializationContext)	Called by the workflow runtime when the Variable for the Handle goes out of scope.
ThrowIfUninitialized()	Throws an InvalidOperationException if the Handle has not been initialized.
ToString()	Returns a string that represents the current object. (Inherited from Object)