Enhancing my WCF service with asynchronous calls?

Question

I am currently developing a WCF service in a windows form application. There would be a simple GUI screen with 2 buttons, "Start" and "Stop". Whenever I attempt to start the service, the UI of the application would temporary hangs until it loads finish. Is it possible to add a loading effect to it? And how can I do that. Still pretty new in this area. Would welcome any comments! Is there any good tutorials out there that teaches how can I enhance this issue? I have read the MSDN blog tutorial from Rick Rainey Making asynchronous service calls from a WinForm client but it is not really that of a good tutorial. Just to clarify, my WCF service is a publish subscribe framework and I think I do not need to be able to call the operations asynchronously. All I want to know is how do I initiate the connection asynchronously. JavaScript questions and answers, JavaScript questions pdf, JavaScript question bank, JavaScript questions and answers pdf, mcq on JavaScript pdf, JavaScript questions and solutions, JavaScript mcq Test , Interview JavaScript questions, JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)

Answer 1

Is it possible to add a loading effect to it? And how can I do that. For this you can use duplex service contract. Also, since your application is a subscription application you might want to look into pushing data to your application from the WCF service. Here's a nice example and although it's for Silverlight I think it might be useful to you: http://weblogs.asp.net/dwahlin/archive/2008/06/16/pushing-data-to-a-silverlight-client-with-wcf-duplex-service-part-i.aspx