CorrelationScope Classe

Définition

public ref class CorrelationScope : System::Activities::NativeActivity

public class CorrelationScope : System.Activities.NativeActivity

type CorrelationScope = class
    inherit NativeActivity

Public Class CorrelationScope
Inherits NativeActivity

Héritage

Object

Activity

NativeActivity

CorrelationScope

Exemples

L'exemple suivant montre comment créer un CorrelationScope. Cet exemple crée un Sequence et ajoute un CorrelationScope (entre autres activités). CorrelationScope contient un Sequence composé d'une activité Send et ReceiveReply.

return new Sequence
{
    Variables = { po, customer },
    Activities =
    {
        new Assign<PurchaseOrder>
        {
            To = po,
            Value = new InArgument<PurchaseOrder>( (e) => new PurchaseOrder() { PartName = "Widget", Quantity = 150 } )
        },
        new Assign<Customer>
        {
            To = customer,
            Value = new InArgument<Customer>( (e) => new Customer() { Id = 12345678, Name = "John Smith" } )
        },
        new WriteLine { Text = new InArgument<string>( (e) => string.Format("Submitting new PurchaseOrder for {0} {1}s", po.Get(e).Quantity, po.Get(e).PartName) ) },
        new CorrelationScope
        {
            Body = new Sequence
            {
                Activities =
                {
                    submitPO,
                    new ReceiveReply
                    {
                        Request = submitPO,
                        Content = ReceiveContent.Create(new OutArgument<int>( (e) => po.Get(e).Id ))
                    }
                }
            }
        },
        new WriteLine { Text = new InArgument<string>( (e) => string.Format("Received ID for new PO: {0}", po.Get(e).Id) ) },
        new Assign<int> { To = new OutArgument<int>( (e) => po.Get(e).Quantity ), Value = 250 },
        new WriteLine { Text = "Updated PO with new quantity: 250.  Resubmitting updated PurchaseOrder based on POId." },
        new Send
        {
            Endpoint = clientEndpoint,
            ServiceContractName = Constants.POContractName,
            OperationName = Constants.UpdatePOName,
            Content = SendContent.Create(new InArgument<PurchaseOrder>(po))
        },
        new Assign<int>
        {
            To = new OutArgument<int>( (e) => po.Get(e).CustomerId ),
            Value = new InArgument<int>( (e) => customer.Get(e).Id )
        },
        new WriteLine { Text = "Updating customer data based on CustomerId." },
        new Send
        {
            Endpoint = clientEndpoint,
            ServiceContractName = Constants.POContractName,
            OperationName = Constants.AddCustomerInfoName,
            Content = SendContent.Create(new InArgument<PurchaseOrder>(po))
        },
        new Send
        {
            Endpoint = clientEndpoint,
            ServiceContractName = Constants.POContractName,
            OperationName = Constants.UpdateCustomerName,
            Content = SendContent.Create(new InArgument<Customer>(customer))
        },
        new WriteLine { Text = "Client completed." }
    }
};

Remarques

L'activité CorrelationScope maintient un CorrelationHandle implicite qui est uniquement visible par les activités enfants. Lorsque la propriété CorrelatesWith est définie par l'utilisateur, elle est utilisée comme handle implicite de CorrelationScope. Dans le cas de CorrelationScope imbriqué, les enfants de l'étendue interne ne peuvent pas accéder au handle implicite de l'étendue externe.

Constructeurs

Propriétés

Méthodes

S’applique à