Communication between 2 windows from application

Question

I have 2 windows form application. 1st application interacts with database while other application is aimed to communicate with the 1st application to interact with the data

Answer 1

Here is a good example using WCF to communicate two processes:

http://www.switchonthecode.com/tutorials/wcf-tutorial-basic-interprocess-communication

Answer 2

Use WCF with netnamedpipe binding as @I4V recommends. Other alternatives are use Pipes, Remoting, or fileshare.

Answer 3

Another option is ZeroMQ C# binding:

http://www.zeromq.org/bindings:clr

Answer 4

One option would be to use WCF named pipes (net.pipe) the other option would be Anonymous Pipes for Local Interprocess Communication

Excerpt:

Anonymous pipes offer less functionality than named pipes, but also require less overhead. You can use anonymous pipes to make interprocess communication on a local computer easier. You cannot use anonymous pipes for communication over a network.