write app current working dir to windows system Path

systemenv.cs

using System;
using System.Security.Principal;

namespace AddCurrentDirToPath
{
    internal class Program
    {
         const string envPathKey = "Path";
        public static bool IsAdministrator()
        {
            var identity = WindowsIdentity.GetCurrent();
            var principal = new WindowsPrincipal(identity);
            return principal.IsInRole(WindowsBuiltInRole.Administrator);
        }

        public static void Main(string[] args)
        {
            if (!IsAdministrator())
            {
                Console.WriteLine("请以管理员身份运行本程序！！🤭");
                Console.ReadKey();
                return;
            }

           
            var currentDir = Environment.CurrentDirectory;
            var currentPathEnv = Environment.GetEnvironmentVariable(envPathKey, EnvironmentVariableTarget.Machine);

            if (currentPathEnv.Contains(currentDir))
            {
                Console.WriteLine($"当前路径:{currentDir}已经包含在Path环境变量中！！😟");
                Console.ReadKey();
                return;
            }

            var newPathEnv = $"{currentPathEnv};{currentDir}";
            Environment.SetEnvironmentVariable(envPathKey, newPathEnv, EnvironmentVariableTarget.Machine);
            Console.WriteLine("写入环境变量操作完成！🎉");
            Console.ReadKey();
        }
    }
}