对于同一套应用程序如何发布一个体验版（有部分功能）完整版（有完整功能）

#define OFFLINE
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace 完整版_精简版 {
    class Program {
        static void Main(string[] args) {
            MyService service = new MyService();
            service.Testing();
            service.GetInfoFromNet();
            Console.ReadKey();
        }
    }
    
    class MyService {

        [Conditional("ONLINE")]
        public void Testing() {
            Console.WriteLine("完整版功能");
        }

        [Conditional("OFFLINE")]
        [Conditional("ONLINE")]
        public void GetInfoFromNet() {
            Console.WriteLine("单机版功能");
        }
    }
}