title: Sending Messages between Services in C#
body: <p>I have 2 Windows services written on .NET 4.5.1. I am looking to see if there is functionality like WinAPI's SendMessage(IntPtr hwnd, uint Msg, IntPtr wParam, IntPtr lParam) call that i can use for a GUI-less process like a windows service!</p>
  
  <p>Thanks!</p>