userlogin.cs

手持式RFID及条码车辆识别系统手持机代码

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;

namespace RFID_CAR
{
    class UserLogin
    {
        public const string gc_str_files_path = "\\My Documents";
        private const char m_c_field_separator = ',';

        public static string get_user_info_file_path()
        {
            return gc_str_files_path + "\\User.txt";
        }
        public string[] get_users()
        {
            string[] users = new string [256];
            int i = 0;
            try
            {
                using (StreamReader stream = File.OpenText(get_user_info_file_path()))
                {
                    while (stream.Peek() >= 0)
                    {
                        string str = stream.ReadLine();
                        string[] pstr_fields = str.Split(m_c_field_separator);
                        users[i] = pstr_fields[2];
                        i++;
                    }
                    stream.Close();
                }
            }
            catch (Exception e_valid)
            {
                System.Windows.Forms.MessageBox.Show("err_valid:" + e_valid.Message);
            }
            return users;
        }

        public bool is_valid_user_login(string str_id, string str_pw)
        {
            bool br = false;
            try
            {
                using (StreamReader stream = File.OpenText(get_user_info_file_path()))
                {
                    while (stream.Peek() >= 0)
                    {
                        string str = stream.ReadLine();
                        string[] pstr_fields = str.Split(m_c_field_separator);
                        if (0 == str_id.CompareTo(pstr_fields[2]) && 0 == str_pw.CompareTo(pstr_fields[1]))
                        {
                            br = true;
                            break;
                        }
                    }
                    stream.Close();
                }
            }
            catch (Exception e_valid)
            {
                System.Windows.Forms.MessageBox.Show("err_valid:" + e_valid.Message);
            }
            return br;
        }
    }
}