OperationContext(IContextChannel) Konstruktor

Definition

Namespace:
System.ServiceModel
Assemblys:
System.ServiceModel.dll, System.ServiceModel.Primitives.dll
Assembly:
System.ServiceModel.Primitives.dll
Assembly:
System.ServiceModel.dll
Paket:
System.ServiceModel.Primitives v10.0.652802
Quelle:
OperationContext.cs
Quelle:
OperationContext.cs
Quelle:
OperationContext.cs

Initialisiert eine neue Instanz der OperationContext Klasse, die die in einer Clientanwendung angegebene IContextChannel verwendet.

public:
 OperationContext(System::ServiceModel::IContextChannel ^ channel);
public OperationContext(System.ServiceModel.IContextChannel channel);
new System.ServiceModel.OperationContext : System.ServiceModel.IContextChannel -> System.ServiceModel.OperationContext
Public Sub New (channel As IContextChannel)

Parameter

channel
IContextChannel

Wird IContextChannel zum Erstellen eines neuen Clients OperationContextverwendet.

Ausnahmen

ArgumentNullException

Der Kanal ist NULL.

Beispiele

Das folgende Beispiel zeigt, wie Sie mit dem OperationContextScope Neuen Kontext in einer Clientanwendung einen neuen Kontext erstellen, um der ausgehenden Nachricht einen benutzerdefinierten Header hinzuzufügen.

SampleServiceClient wcfClient = new SampleServiceClient(new InstanceContext(this));
try
{
  using (OperationContextScope scope = new OperationContextScope(wcfClient.InnerChannel))
  {
    MessageHeader header
      = MessageHeader.CreateHeader(
      "Service-Bound-CustomHeader",
      "http://Microsoft.WCF.Documentation",
      "Custom Happy Value."
      );
    OperationContext.Current.OutgoingMessageHeaders.Add(header);

    // Making calls.
    Console.WriteLine("Enter the greeting to send: ");
    string greeting = Console.ReadLine();

    //Console.ReadLine();
    header = MessageHeader.CreateHeader(
        "Service-Bound-OneWayHeader",
        "http://Microsoft.WCF.Documentation",
        "Different Happy Value."
      );
    OperationContext.Current.OutgoingMessageHeaders.Add(header);

    // One-way
    wcfClient.Push(greeting);
    this.wait.WaitOne();

    // Done with service.
    wcfClient.Close();
    Console.WriteLine("Done!");
    Console.ReadLine();
  }
}
catch (TimeoutException timeProblem)
{
  Console.WriteLine("The service operation timed out. " + timeProblem.Message);
  Console.ReadLine();
  wcfClient.Abort();
}
catch (CommunicationException commProblem)
{
  Console.WriteLine("There was a communication problem. " + commProblem.Message);
  Console.ReadLine();
  wcfClient.Abort();
}

Dim wcfClient As New SampleServiceClient(New InstanceContext(Me))
Try
  Using scope As New OperationContextScope(wcfClient.InnerChannel)
            Dim header As MessageHeader = MessageHeader.CreateHeader("Service-Bound-CustomHeader", _
                                "http://Microsoft.WCF.Documentation", "Custom Happy Value.")
    OperationContext.Current.OutgoingMessageHeaders.Add(header)

    ' Making calls.
    Console.WriteLine("Enter the greeting to send: ")
    Dim greeting As String = Console.ReadLine()

    'Console.ReadLine();
            header = MessageHeader.CreateHeader("Service-Bound-OneWayHeader", _
                                                "http://Microsoft.WCF.Documentation", "Different Happy Value.")
    OperationContext.Current.OutgoingMessageHeaders.Add(header)

    ' One-way
    wcfClient.Push(greeting)
    Me.wait.WaitOne()

    ' Done with service. 
    wcfClient.Close()
    Console.WriteLine("Done!")
    Console.ReadLine()
  End Using
Catch timeProblem As TimeoutException
  Console.WriteLine("The service operation timed out. " & timeProblem.Message)
  Console.ReadLine()
  wcfClient.Abort()
Catch commProblem As CommunicationException
  Console.WriteLine("There was a communication problem. " & commProblem.Message)
  Console.ReadLine()
  wcfClient.Abort()
End Try

Hinweise

Verwenden Sie den OperationContext Konstruktor, um einen neuen Vorgangskontext innerhalb des Bereichs zu erstellen, in dem der Proxy zugeordnet ist, um ausgehende Elemente wie Kopfzeilen zu ändern.

Gilt für: