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Shane Poppleton

Shane Poppleton

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Problem with Generics

Jun 10 2009 10:15 PM
OK, i just thought i would simplify my question a bit:

The following won't compile (missing a cast)
 class Program
    {
        static void Main(string[] args)
        {
            foo f = foo.CreateMe();
        }
    }

    class foo : GenericTest<bar>
    {
    }
    class bar
    {
    }

    class GenericTest<T> where T:new()
    {
        public static GenericTest<T> CreateMe()
        {
            return new GenericTest<T>();
        }
    }


The following, compiles but has a run time error:
 class Program
    {
        static void Main(string[] args)
        {
            foo f = (foo)foo.CreateMe();
        }
    }

    class foo : GenericTest<bar>
    {
    }

    class bar
    {
    }
    class GenericTest<T>
    {
        public static GenericTest<T> CreateMe()
        {
            return new GenericTest<T>();
        }
    }


Answers (1)