title: What is the simplest method of inter-process communication between 2 C# processes?
body: <p>I want to create a communication between a parent and a child process, both written in C#.</p>
  <p>It should be asynchronous, event-driven.</p>
  <p>I don't want to run a thread in every process to handle the very rare communication.</p>
  <p>What is the best solution for it?</p>