ReleaseInstanceMode Enum

Definition

public enum class ReleaseInstanceMode

public enum ReleaseInstanceMode

type ReleaseInstanceMode = 

Public Enum ReleaseInstanceMode

Inheritance

Object

ValueType

Enum

ReleaseInstanceMode

Fields

Examples

The following example code shows the use of ReleaseInstanceMode to recycle service objects both before and after a call.

class SampleService : ISampleService
{
 private Guid id;
 private string session;

 public SampleService()
 {
 id = Guid.NewGuid();
 session = OperationContext.Current.SessionId;
 Console.WriteLine("Object {0} has been created.", id);
 Console.WriteLine("For session {0}", session);
 }
 [OperationBehavior(
 ReleaseInstanceMode=ReleaseInstanceMode.BeforeAndAfterCall
 )]
 public string SampleMethod(string msg)
 {
 Console.WriteLine("The caller said: \"{0}\"", msg);
 Console.WriteLine("For session {0}", OperationContext.Current.SessionId);
 return "The service greets you: " + msg;
 }

 ~SampleService()
 {
 Console.WriteLine("Object {0} has been destroyed.", id);
 Console.WriteLine("For session {0}", session);
 }
}

Friend Class SampleService
 Implements ISampleService
 Private id As Guid
 Private session As String

 Public Sub New()
 id = Guid.NewGuid()
 session = OperationContext.Current.SessionId
 Console.WriteLine("Object {0} has been created.", id)
 Console.WriteLine("For session {0}", session)
 End Sub
 <OperationBehavior(ReleaseInstanceMode:=ReleaseInstanceMode.BeforeAndAfterCall)> _
 Public Function SampleMethod(ByVal msg As String) As String Implements ISampleService.SampleMethod
 Console.WriteLine("The caller said: ""{0}""", msg)
 Console.WriteLine("For session {0}", OperationContext.Current.SessionId)
 Return "The service greets you: " & msg
 End Function

 Protected Overrides Sub Finalize()
 Console.WriteLine("Object {0} has been destroyed.", id)
 Console.WriteLine("For session {0}", session)
 End Sub
End Class

Remarks

Use the ReleaseInstanceMode with the ReleaseInstanceMode property to inform Windows Communication Foundation (WCF) that the current service object must be recycled at a particular point in the invocation process. The default behavior is to recycle a service object according to the InstanceContextMode value.