C# communicating between processes

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C#

IPC

Hi,

I have an application (CustomerUI) and another (VendorUI) and a class library (DemoLib)

In (VendorUI) a button that simulates adding a new product fires an event in the (DemoLib) that the (CustomerUI) is listening and should notify the user.

The program is fine as long as it is in the same solution but when I separated them into different solutions its not working.

Until I learned that events will not work for different process and need some sort of intercommunication.

So I have been trying to find some topics and tutorials on IPC to communicate processes together in C# but I really can't understand them.

I don't know if I am jumping topics that I should know before learning IPC or not ? I mean this thing is new to me so can someone point me in a right direction ?

Thanks

What I have tried:

Can't find a tutorial or topic