C# program menu (searches classes and runs Main method)

Program.cs

using System;
using System.Linq;
using System.Reflection;

namespace ConsoleApp1 {
  class Program {
    static void Main(string[] args) {
      var current = MethodBase.GetCurrentMethod().DeclaringType;

      var methods = (
        from type in Assembly.GetExecutingAssembly().GetTypes()
        where type.Namespace == current.Namespace
        where type.IsClass
        where type.Name.EndsWith("Program")
        where type != current
        select type.GetMethod("Main", BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Static, null, CallingConventions.Standard, new Type[] { typeof(string[]) }, null) into method
        where method != null
        select method
      ).ToArray();

      int index = 0;
      while (true) {
        if (index == -1)
          Console.WriteLine("Wrong option selected.");
        if (index == -2)
          Console.WriteLine("Wrong option inputted.");
        if (index < 0)
          Console.WriteLine();

        Console.WriteLine("PROGRAMS LIST:");
        int i = 1;
        foreach (var method in methods)
          Console.WriteLine($"{i++}. {method.DeclaringType.Name}");
        Console.Write("OPTION: ");
        if (!int.TryParse(Console.ReadLine(), out index))
          index = -2;
        else if (index < 1 || index > methods.Length)
          index = -1;
        else {
          index--;
          Console.WriteLine();
          break;
        }
      }

      methods[index].Invoke(null, new object[] { args });

      Console.WriteLine();
      Console.WriteLine("Press any key to exit...");
      Console.ReadLine();
    }
  }
}