Windows窗体：由应用程序而不是用户打开/关闭的模式窗体？

I have what I believe to be a fairly well structured .NET 3.5 forms application (Unit Tests, Dependency Injection, SoC, the forms simply relay input and display output and don't do any logic, yadda yadda) I am just missing the winforms knowledge for how to get this bit to work.I have what I believe to be a fairly well struc