using System;
  using System.Reflection;

  internal static class Program
  {
    private static int Method(int p1, ref int p2, out int p3) {
      p2 += p1;
      p3 = p1 * 3;
      return p1 * 4;
    }

    private static void Main() {
      const string MethodName = "Method";
      const int ParametersCount = 3;

      var types = new Type[ParametersCount] { typeof(int), typeof(int).MakeByRefType(), typeof(int).MakeByRefType(), };
      var method = typeof(Program).GetMethod(MethodName, BindingFlags.NonPublic | BindingFlags.Static, null, types, null);
      if(method == null) {
        throw new InvalidOperationException("method == null");
      }//if

      var parameters = new object[ParametersCount] { 1, 2, null, };
      var result = method.Invoke(null, parameters);
      Console.WriteLine("Result: {3} = ({0}, {1}, {2})", parameters[0], parameters[1], parameters[2], result);
    }
  }