How to add a custom HTTP header to every WCF call?

Question

I have a WCF service that is hosted in a Windows Service. Clients that using this service must pass an identifier every time they\'re calling service methods (because that i

Answer 1

This works for me

TestService.ReconstitutionClient _serv = new TestService.TestClient();

using (OperationContextScope contextScope = new OperationContextScope(_serv.InnerChannel))
{
   HttpRequestMessageProperty requestMessage = new HttpRequestMessageProperty();

   requestMessage.Headers["apiKey"] = ConfigurationManager.AppSettings["apikey"]; 
   OperationContext.Current.OutgoingMessageProperties[HttpRequestMessageProperty.Name] = 
      requestMessage;
   _serv.Method(Testarg);
}