在2个C＃应用程序实例之间传递字符串

Question

I built a media player, that media player is associated with several media file types.
Every time that a user opens a media file, I check if my player is open.
I managed to prevent opening two instances but I want to pass the file path to the already opened instance.

I am using mutex to prevent opening and I have been trying to use SendMessage to pass strings.
What is the best way to do so?

Answer 1

I think a good way is to create a WCF service into your media player. You will can communicate easily with it. See the ServiceHost class

Answer 2

Try named pipes , ie NamedPipeServerStream & NamedPipeClientStream . Some general overview is avaibale here as well, although in your case basic write-to-temp-lock-file/read-from-temp-lock-file might not be such a bad idea.