using System;

using System.Linq;

using System.Reflection;

​

public class Program

{

    public static void Main()

    {

        Program p = new Program();

        Type[] types = Assembly.GetExecutingAssembly().GetTypes();

        Type TEnum = types.Where(d => d.Name == "TEnum").FirstOrDefault();

        var values = TEnum.GetEnumValues();

        var error = new object ();

        foreach (var value in values)

        {

            if (value.ToString() == "Test2")

            {

                error = value;

            }

        }

​

        var program = Assembly.GetExecutingAssembly().GetTypes().First(d => d.Name == "Program");

        foreach (var method in program.GetMethods())

        {

            if (method.Name == "TestMethod")

            {

                method.Invoke(null, new object[2]

                {

                "A", error

                }

​

                );

            }

        }

    }

​

    public static void TestMethod(string a, ref TEnum b)

    {

        Console.WriteLine("test");

    }

}

​

public enum TEnum

{

    Test,

    Test2

}