CorrelationParameterAttribute Class

 
Note: This API is now obsolete.

Indicates the name of the parameter used for correlation in the methods and events defined on an ExternalDataExchange interface. This class cannot be inherited.

Namespace:   System.Workflow.Activities
Assembly:  System.Workflow.Activities (in System.Workflow.Activities.dll)

System.Object
  System.Attribute
    System.Workflow.Activities.CorrelationParameterAttribute

[AttributeUsageAttribute(AttributeTargets.Interface, AllowMultiple = true)]
[ObsoleteAttribute("The System.Workflow.* types are deprecated.  Instead, please use the new types from System.Activities.*")]
public sealed class CorrelationParameterAttribute : Attribute

NameDescription
System_CAPS_pubmethodCorrelationParameterAttribute(String)

Initializes a new instance of the CorrelationParameterAttribute where the name of the parameter is used for correlation.

NameDescription
System_CAPS_pubpropertyName

Gets the name of the parameter used for correlation.

System_CAPS_pubpropertyTypeId

When implemented in a derived class, gets a unique identifier for this Attribute.(Inherited from Attribute.)

NameDescription
System_CAPS_pubmethodEquals(Object)

This API supports the product infrastructure and is not intended to be used directly from your code. Returns a value that indicates whether this instance is equal to a specified object.(Inherited from Attribute.)

System_CAPS_pubmethodGetHashCode()

Returns the hash code for this instance.(Inherited from Attribute.)

System_CAPS_pubmethodGetType()

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_pubmethodIsDefaultAttribute()

When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class.(Inherited from Attribute.)

System_CAPS_pubmethodMatch(Object)

When overridden in a derived class, returns a value that indicates whether this instance equals a specified object.(Inherited from Attribute.)

System_CAPS_pubmethodToString()

Returns a string that represents the current object.(Inherited from Object.)

NameDescription
System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.GetIDsOfNames(Guid, IntPtr, UInt32, UInt32, IntPtr)

Maps a set of names to a corresponding set of dispatch identifiers.(Inherited from Attribute.)

System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.GetTypeInfo(UInt32, UInt32, IntPtr)

Retrieves the type information for an object, which can be used to get the type information for an interface.(Inherited from Attribute.)

System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.GetTypeInfoCount(UInt32)

Retrieves the number of type information interfaces that an object provides (either 0 or 1).(Inherited from Attribute.)

System_CAPS_pubinterfaceSystem_CAPS_privmethod_Attribute.Invoke(UInt32, Guid, UInt32, Int16, IntPtr, IntPtr, IntPtr, IntPtr)

Provides access to properties and methods exposed by an object.(Inherited from Attribute.)

System_CAPS_noteNote

This material discusses types and namespaces that are obsolete. For more information, see Deprecated Types in Windows Workflow Foundation 4.5.

Default setting; can be overridden by the CorrelationAliasAttribute.

The following code example demonstrates how to use a CorrelationParameterAttribute for an EnternalDataExchange interface. This code example is from the CorrelatedLocalService SDK sample. For more information, see Correlated Local Service Sample.

[ExternalDataExchange]
[CorrelationParameter("taskId")]
public interface ITaskService
{
    [CorrelationInitializer]
    void CreateTask(string taskId, string assignee, string text);

    [CorrelationAlias("taskId", "e.Id")]
    event EventHandler<TaskEventArgs> TaskCompleted;
}

.NET Framework
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.

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