Push Notification mechanism between a server and a client app

Question

I am developping a desktop application using C#, which communicates with a server over a WCF Web Service. It is supposed to be a kind of synchronization application. Meaning

Answer 1

PushSharp :A server-side library for sending Push Notifications to clients (the clients are basically mobile devices - but can be custom as well)! You google to get some tutorial on PushSharp use as well.