Question

In C# console application, I created one calss and one method, and build the application. Then i created one more console application and i add reference of the the dll into the new class, but when i am trying to add the name space i am not getting the the calss.

namespace Mydll
{

    class Test
    {
        public int MUL(int x, int y)
        {
            return x * y;
        }
    }

    class Program
    {
        static void Main(string[] args)
        {
            Test t = new Test();
            int z = t.MUL(10, 20);
            Console.WriteLine(z.ToString());
            Console.ReadLine();
        }
    }
}

when i am typing the namespace Mydll i am not able to get. Cna you help me.

Answer 1

you have to make the class

public: Public access is the most permissive access level

or

internal :Internal types or members are accessible only within files in the same assembly (if you are creating the console application in the same solution)

otherwise your class won’t be visible

public class Test
    {
        public int MUL(int x, int y)
        {
            return x * y;
        }
    }