passing array between two C# Windows Form application

I have two C# application an开发者_如何学Pythond I want interactive them by calling one program giveMeDataArray(xIndex,yIndex) and then second program send response to first program by sending an array to it please help me on this issue.... thnx

EDIT: I have a program that generate numbers and a program show that. when user scroll in presentation program, that request for data. this data provided by second program and type of data is array i just want have this array in first application

You should reference one app to another with dll.if you don't know how to add dll you can visit Adding a dll file to a C# project