using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;

namespace XML_Operation
{
    public class URL
    {
        public const string ClientHome = "SZ_HOME";
        #region Dir
        //获取环境变量的值
        public static readonly string DataFolder = Environment.GetEnvironmentVariable(ClientHome);

        public static readonly string Config = @"Data\Canaan\Config";
        //合并路径目录
        public static readonly string DirCalibration = Path.Combine(DataFolder, Config, @"Polisher\Calibration");
        public static readonly string DirPLC = Path.Combine(DataFolder, Config, @"Polisher\PLC");
        #endregion
        public static string filePath = Path.Combine(DirCalibration, "Head_LUT.xml");
        public static void test()
        {
            Console.WriteLine($"{filePath}");
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace XML_Operation
{
    class Program
    {
        static void Main(string[] args)
        {
            URL.test();
            Console.ReadKey();
        }
    }
}

D:\Sizone\SiZoneProjects\Data\Canaan\Config\Polisher\Calibration\Head_LUT.xml