The thing is, i really dont want the console window to show up...but the solution should be running. My point here is, I want to keep the application running in the background, without any window coming up.
Change the output type from Console Application to Windows Application. This can be done under Project -> Properties -> Application in Visual Studio:
Change your application type to a windows application. Your code will still run, but it will have no console window, nor standard windows window unless you create one.
Instead of Console.Readline/key you can use new ManualResetEvent(false).WaitOne() at last. This works well for me.
Maybe you want to try creating a Windows Service application. It will be running in the background, without any UI.
Change the output type from Console Application to Windows Application,
And Instead of Console.Readline/key you can use new ManualResetEvent(false).WaitOne() at the end to keep the app running.
来源：https://stackoverflow.com/questions/3853629/hide-console-window-in-c-sharp-console-application