I am fairly new to development, and Visual Studio 2010. I have a solution

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Editorial Team

Asked: May 17, 20262026-05-17T19:53:41+00:00 2026-05-17T19:53:41+00:00

I am fairly new to development, and Visual Studio 2010.

I have a solution with a Test Project:

In my solution, there are two projects: “TPS” and “TPS.Tests”
In the TPS project, in the namespace “TPS.Models” I have defined a bunch of classes, and two interfaces.
I have created a Test Class in the TPS.Tests project, and have added “using TPS.Models;”
I attempt to implement the interface by typing it out (e.g. public class FakeObjectClass : IObjectClass), but it isn’t recognised (so I can’t get the auto-implement going, which would be handy as I have over 100 methods)
Typing in the class, in Intellisense, I can see all the objects defined in my model, but none of the interfaces.

Google has been unusually silent on the search combinations I have tried. I am hoping there is some simple explanation/fix?

Thanks in advance for your time.

Tim.

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Editorial Team · Answer 1 · 2026-05-17T19:53:41+00:00

Editorial Team

If you haven’t specified an access modifier when defining the Interface, it will default to internal and not be visible to other assemblies.

Make sure that you defined your interface as

public interface IMyInterface

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