Note: This API is now obsolete.
Overrides the correlation parameter value when the correlation value must be obtained from a parameter other than that indicated by the CorrelationParameterAttribute. This class cannot be inherited.
Assembly: System.Workflow.Activities (in System.Workflow.Activities.dll)
[ObsoleteAttribute("The System.Workflow.* types are deprecated. Instead, please use the new types from System.Activities.*")] [AttributeUsageAttribute(AttributeTargets.Method|AttributeTargets.Event|AttributeTargets.Delegate, AllowMultiple = true)] public sealed class CorrelationAliasAttribute : Attribute
Thetype exposes the following members.
|Equals||Infrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.)|
|GetHashCode||Returns the hash code for this instance. (Inherited from Attribute.)|
|GetType||Gets the Type of the current instance. (Inherited from Object.)|
|IsDefaultAttribute||When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute.)|
|Match||When overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.)|
|ToString||Returns a string that represents the current object. (Inherited from Object.)|
|_Attribute.GetIDsOfNames||Maps a set of names to a corresponding set of dispatch identifiers. (Inherited from Attribute.)|
|_Attribute.GetTypeInfo||Retrieves the type information for an object, which can be used to get the type information for an interface. (Inherited from Attribute.)|
|_Attribute.GetTypeInfoCount||Retrieves the number of type information interfaces that an object provides (either 0 or 1). (Inherited from Attribute.)|
|_Attribute.Invoke||Provides access to properties and methods exposed by an object. (Inherited from Attribute.)|
This material discusses types and namespaces that are obsolete. For more information, see Deprecated Types in Windows Workflow Foundation 4.5.
To match an incoming message with the appropriate workflow instance, the message and the workflow instance must share a key. This key is called a correlation set. Typically, the key can be a single-valued correlation set. This means that an ID field in the message can be matched against an ID of the same type that is held by schedule instances.
The is applied to a method or an event on an interface on a data exchange interface.
The following code example shows how to use a to override a CorrelationParameterAttribute. This code example is from the CorrelatedLocalService SDK sample. For more information, see Correlated Local Service Sample.