I am implementing design tool that generates C# code for a partial class and allows users to write code-behind for certain initialization events. So I have 2 files involved - one generated and one user-editable. What I would like to be able to do is have the user-editable file be aware of the generated file (both implementing the same partial class) so that if I add an item to my model, it becomes visible in the code-behind file. For example, a form designer that allows you to drag a Button onto a form and name it MyButton. Each time I add or remove an item on the form, I would generate a file called PageOne.g.cs that has a Button called MyButton in a partial class called PageOne. The code-behind file called PageOne.cs has an event handler called PageOne_Loaded and I would like to have IntelliPrompt be aware of the MyButton variable that is declared in the PageOne.g.cs file. So, simply put, is there a way to make the editor "aware" of other files besides just its Document property?