The type or namespace cannot be found (are you missing a using directive or an assembly reference?)

Question

I get the following error when I try to compile my C# program:

The type or namespace name \'Login\' could not be found (are you missing a using directive or an

Answer 1

You don't have the namespace the Login class is in as a reference.

Add the following to the form that uses the Login class:

using FootballLeagueSystem;

When you want to use a class in another namespace, you have to tell the compiler where to find it. In this case, Login is inside the FootballLeagueSystem namespace, or : FootballLeagueSystem.Login is the fully qualified namespace.

As a commenter pointed out, you declare the Login class inside the FootballLeagueSystem namespace, but you're using it in the FootballLeague namespace.