Company.cs

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

namespace MQTT
{
    public class Company
    {
        public string Company_ID { get; set; }
        public string Name { get; set; }
        public string Address { get; set; }
        public string Cellphone { get; set; }

        public Company(string i,string n,string a,string c) {
            Company_ID = i;
            Name = n;
            Address = a;
            if (c.Length > 0)
            {
                if (c[1].ToString()=="9")
                {
                    Cellphone = $"{c[0]}{c[1]}{c[2]}{c[3]}-{c[4]}{c[5]}{c[6]}{c[7]}{c[8]}{c[9]}"; //0932-690245
                }
                else
                {
                    Cellphone = $"({c[0]}{c[1]}){c[2]}{c[3]}{c[4]}-{c[5]}{c[6]}{c[7]}{c[8]}"; //(05)587-5935
                }
            }
            else
            {
                Cellphone = "";
            }
        }
    }
}