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This is my first major application using multiple classes. It is written in vb and I know about creating objects of the class and using that instance to call functions of the class. But how do I create an object with constructors to allow another program written in C# to access my classes and functions and accept things from the program.
Hope this makes sense.
You need to compile your VB classes into a class library (DLL) not an application.
From you C# application you need to add a reference to your newly compiled DLL. This DLL contains the classes and methods that you can instantiate and call from C#.
Once you’ve added a reference to the VB DLL from your C# assembly, you can access the VB classes (mostly) as though they were all in the same assembly. (I say mostly because access modifiers can change this, especially the ‘internal’ access modifier).