Dynamically change namespace in C#

问题

I want to do something like this. If DEBUG is defined then the namespace is Test, or the namespace is TestB. See the sample code bellow. Can I do that or you have better ideas to achieve this? Thanks in advance!

# if DEBUG
     [SomekindofAttribute(Namespace = "Test")]
 #endif
namespace TestB
 {

     public class Program
     {}
 }

回答1:

You can do this:

#if DEBUG
namespace TestB
#else
namespace Test
#endif
{
    public class Program { }
}

Though this looks like a very bad idea. Everything using Program would have to do the same preprocessor directives for their using declarations, too.

回答2:

Why not adding condition into the namespace declaration itself?
If I understand your question correctly, then you can use code below.

#if DEBUG
namespace Test
#else
namespace TestB
#endif
{
    public class Program
    {
        public static void Main()
        {
            Console.WriteLine(new Program().GetType().FullName);
            Console.ReadLine();
        }
    }
}

Please confirm is this is what you want.

来源：https://stackoverflow.com/questions/40414351/dynamically-change-namespace-in-c-sharp