using System;

​

public class Program

{

    public static void Main()

    {

        var myClassInstance = new blah();

        var res = myClassInstance.GetType().GetField("myEnumInstance").GetValue(myClassInstance);

        Console.WriteLine(res);

    }

    class blah

    {

        public MyEnum myEnumInstance = MyEnum.ValueTwo;

        public enum MyEnum

        {

            ValueOne = 1,

            ValueTwo = 2,

            ValueThree = 3

        }

    }

}