Hello, I have question about NAV interoperability.
Let's assume that i have a project in c#, simple calculator application, with gui, buttons etc.
In sale order page i want to add an action which will launch that calculator, You can count something and then I want to pass the result to the unit price excluding VAT field of the sales line in that sale order. How to achieve this? Add a .cs file in add-ins? I've only seen examples with dll files added to nav, can't figure out how to do something like this.