public partial class Kf_account : Form
 {
  private readonly DataTable adt_user = new DataTable();
  private readonly string as_INIFile = Application.StartupPath + "\\user.ini";

  public Kf_account()
  {
   BindUser();
  }

  private void BindUser()
  {
   if (!File.Exists(as_INIFile))
   {
    var str = new StringBuilder();
    str.Append(";内容由程序自动生成，请不要修改此文件内容\r\n");
    str.Append("[total]\r\n");
    str.Append("total=\r\n");
    str.Append("[count]\r\n");
    str.Append("count=\r\n");
    str.Append("[user]\r\n");
    //StreamWriter sw = default(StreamWriter);
    //sw = File.CreateText(ls_INIFile);
    //sw.WriteLine(str.ToString());
    //sw.Close();
    File.WriteAllText(as_INIFile, str.ToString(), Encoding.Unicode);
    File.SetAttributes(as_INIFile, FileAttributes.Hidden);
   }
   CheckForIllegalCrossThreadCalls = false;
   InitializeComponent();
   Icon = Resource1.ico;
   lkl_num.Text = INIFile.ContentValue("total", "total", as_INIFile);
   lkl_num_c.Text = INIFile.ContentValue("count", "count", as_INIFile);
   pictureBox1.Visible = true;
   var sr = new StreamReader(as_INIFile, Encoding.Unicode);
   String line;
   int li_count = 0;
   adt_user.Columns.Clear();
   adt_user.Columns.Add("username", Type.GetType("System.String"));
   adt_user.Columns.Add("openid", Type.GetType("System.String"));
   while ((line = sr.ReadLine()) != null)
   {
    li_count++;
    if (li_count > 6)
    {
     line = SysVisitor.Current.GetFormatStr(line);
     DataRow newRow;
     newRow = adt_user.NewRow();
     newRow["username"] = line.Substring(0, line.LastIndexOf('='));
     newRow["openid"] = line.Substring(line.LastIndexOf('=') + 1);
     adt_user.Rows.Add(newRow);
    }
   }
   sr.Close();
   dataGridView1.AutoGenerateColumns = false;
   dataGridView1.DataSource = adt_user;
   //dataGridView1.AutoSizeColumnsMode = System.Windows.Forms.DataGridViewAutoSizeColumnsMode.DisplayedCells;
   lbl_count.Text = "共" + (li_count - 6) + "行";
   pictureBox1.Visible = false;
  }

  private void btn_GetUser_Click(object sender, EventArgs e)
  {
   if (MessageBox.Show(@"拉取用户信息的速度取决于你的关注数与网络速度，
可能需要几分钟甚至更长时间。
使用此功能将消耗大量用户管理接口配额。
要继续此操作吗？",
    "提示：", MessageBoxButtons.YesNo) == DialogResult.No)
   {
    return;
   }
   var thr = new Thread(Get_user_list);
   thr.Start();
  }

  private void Get_user_list()
  {
   File.Delete(as_INIFile);
   var str = new StringBuilder();
   str.Append(";内容由程序自动生成，请不要修改此文件内容\r\n");
   str.Append("[total]\r\n");
   str.Append("total=\r\n");
   str.Append("[count]\r\n");
   str.Append("count=\r\n");
   str.Append("[user]\r\n");
   File.WriteAllText(as_INIFile, str.ToString(), Encoding.Unicode);
   File.SetAttributes(as_INIFile, FileAttributes.Hidden);

   string ls_appid = INIFile.ContentValue("weixin", "Appid");
   string ls_secret = INIFile.ContentValue("weixin", "AppSecret");
   string access_token = "";
   string menu = "";
   if (ls_appid.Length != 18 || ls_secret.Length != 32)
   {
    MessageBox.Show("你的Appid或AppSecret不对，请检查后再操作");
    return;
   }
   access_token = SysVisitor.Current.Get_Access_token(ls_appid, ls_secret);
   if (access_token == "")
   {
    MessageBox.Show("Appid或AppSecret不对，请检查后再操作");
    return;
   }
   menu = SysVisitor.Current.GetPageInfo("https://api.weixin.qq.com/cgi-bin/user/get" + access_token);
   if (menu.Substring(2, 7) == "errcode")
   {
    MessageBox.Show("拉取失败，返回消息：\r\n" + menu);
   }

   JObject json = JObject.Parse(menu);
   lkl_num.Text = json["total"].ToString();
   INIFile.SetINIString("total", "total", lkl_num.Text, as_INIFile);
   lkl_num_c.Text = json["count"].ToString();
   INIFile.SetINIString("count", "count", lkl_num_c.Text, as_INIFile);
   int li_count = int.Parse(json["count"].ToString());
   btn_GetUser.Enabled = false;
   pictureBox1.Visible = true;
   FileStream fs = null;
   Encoding encoder = Encoding.Unicode;
   for (int i = 0; i < li_count; i++)
   {
    string openid, username;
    openid = Get_UserName(json["data"]["openid"][i].ToString());
    username = json["data"]["openid"][i].ToString();
    //INIFile.SetINIString("user", openid, username, as_INIFile);
    byte[] bytes = encoder.GetBytes(openid + "=" + username + " \r\n");
    fs = File.OpenWrite(as_INIFile);
    //设定书写的開始位置为文件的末尾 
    fs.Position = fs.Length;
    //将待写入内容追加到文件末尾 
    fs.Write(bytes, 0, bytes.Length);
    fs.Close();
    lab_nums.Text = "已拉取" + i + "个，还剩" + (li_count - i) + "个，请耐心等待";
   }
   lab_nums.Text = "";
   //BindUser();
   btn_GetUser.Enabled = true;
   pictureBox1.Visible = false;
   MessageBox.Show("已全部拉取完毕,请重新打开该窗口");
  }

  /// <summary>
  ///  获取用户信息详情，返回json
  /// </summary>
  /// <param name="as_openid"></param>
  private string Get_User(string as_openid)
  {
   string ls_json = "";
   string access_token = "";
   access_token = SysVisitor.Current.Get_Access_token();
   ls_json =
    SysVisitor.Current.GetPageInfo("https://api.weixin.qq.com/cgi-bin/user/info" + access_token + "&openid=" + as_openid + "&lang=zh_CN");
   return ls_json;
  }

  /// <summary>
  ///  获取用户用户的昵称
  /// </summary>
  private string Get_UserName(string as_openid)
  {
   string ls_json = "";
   ls_json = Get_User(as_openid);
   string username = "";
   JObject json = JObject.Parse(ls_json);
   username = json["nickname"].ToString();
   username = SysVisitor.Current.GetFormatStr(username);
   return username;
  }

  private void btn_search_Click(object sender, EventArgs e)
  {
   string username = txt_search.Text.Trim();
   if (string.IsNullOrWhiteSpace(username))
   {
    return;
   }
   DataRow[] datarows = adt_user.Select("username like '%" + username + "%'");

   var ldt = new DataTable();
   ldt.Columns.Clear();
   ldt.Columns.Add("username", Type.GetType("System.String"));
   ldt.Columns.Add("openid", Type.GetType("System.String"));
   ldt = ToDataTable(datarows);
   try
   {
    lbl_count.Text = ldt.Rows.Count.ToString();
   }
   catch
   {
   }
   dataGridView1.AutoGenerateColumns = false;
   dataGridView1.DataSource = ldt;
  }

  public DataTable ToDataTable(DataRow[] rows)
  {
   if (rows == null || rows.Length == 0) return null;
   DataTable tmp = rows[0].Table.Clone(); // 复制DataRow的表结构 
   foreach (DataRow row in rows)
    tmp.Rows.Add(row.ItemArray); // 将DataRow添加到DataTable中 
   return tmp;
  }

  private void dataGridView1_CellMouseClick(object sender, DataGridViewCellMouseEventArgs e)
  {
   try
   {
    SysVisitor.Current.Wx_openid =
     dataGridView1.Rows[dataGridView1.CurrentCell.RowIndex].Cells[1].Value.ToString();
    SysVisitor.Current.Wx_username =
     dataGridView1.Rows[dataGridView1.CurrentCell.RowIndex].Cells[0].Value.ToString();
    //MessageBox.Show(str);
    grb_chat.Enabled = true;
    grb_chat.Text = SysVisitor.Current.Wx_username;
   }
   catch
   {

   }
   webBrowser_msg.DocumentText = "";
   string url = string.Format("https://api.weixin.qq.com/cgi-bin/customservice/getrecord",
    SysVisitor.Current.Get_Access_token());
   string ls_text = @"{";
   ls_text += "\"starttime\" : " + DateTime.Now.AddDays(-3).Ticks + ",";
   ls_text += "\"endtime\" : " + DateTime.Now.Ticks + ",";
   ls_text += "\"openid\" : \"" + SysVisitor.Current.Wx_openid + "\",";
   ls_text += "\"pagesize\" : 1000,";
   ls_text += "\"pageindex\" : 1,";
   ls_text += "}";
   string ls_history = SysVisitor.Current.PostPage(url, ls_text);
   webBrowser_msg.DocumentText = ls_history;
  }

  private void btn_send_Click(object sender, EventArgs e)
  {
   string ls_msg = richTextBox_msg.Text;
   string ls_text = @"{";
   ls_text += "\"touser\":\"" + SysVisitor.Current.Wx_openid + "\",";
   ls_text += "\"msgtype\":\"text\",";
   ls_text += "\"text\":";
   ls_text += "{";
   ls_text += "\"content\":\"" + ls_msg + "\"";
   ls_text += "}";
   ls_text += "}";
   string url = string.Format("https://api.weixin.qq.com/cgi-bin/message/custom/send",
    SysVisitor.Current.Get_Access_token());
   string ls_isright = SysVisitor.Current.PostPage(url, ls_text);

   webBrowser_msg.DocumentText += "<P align=right><FONT size=3>" + ls_isright + "</FONT></P>";
  }

  private void btn_addkf_Click(object sender, EventArgs e)
  {
   string url = string.Format("https://api.weixin.qq.com/customservice/kfaccount/add", SysVisitor.Current.Get_Access_token());
   //客服账号 设置 xxx@你的公众号 这样的格式才是正确的哟。
   string ls_text = "{";
   ls_text += "\"kf_account\":test2@gz-sisosoft,";
   ls_text += "\"nickname\":\"客服2\",";
   ls_text += "\"password\":\"12345\",";
   ls_text += "}";
   string ls_kf = @"{
       'kf_account' : 'test1@gz-sisosoft',
       'nickname' : '客服1',
       'password' : '123456',
      }";
   string ls_isok = SysVisitor.Current.PostPage(url, ls_text);
   MessageBox.Show(ls_isok);
  }

  private void Kf_account_Load(object sender, EventArgs e)
  {
  }
 }

 class SysVisitor
 {
  private static SysVisitor visit = null;
  public static SysVisitor Current
  {
   get
   {
    if (visit == null)
     visit = new SysVisitor();

    return visit;
   }
  }
  /// <summary>
  /// 获取access_token
  /// </summary>
  /// <param name="appid">appid</param>
  /// <param name="secret">appsecret</param>
  /// <returns></returns>
  public string Get_Access_token(string appid, string appsecret)
  {
   string secondappid = INIFile.ContentValue("weixin", "secondappid");
   if (appid.ToLower() == secondappid.ToLower())
   {
    string ls_time = INIFile.ContentValue("weixin", "gettime");
    Decimal ldt;
    try
    {
     ldt = Convert.ToDecimal(ls_time);
     if (Convert.ToDecimal(DateTime.Now.ToString("yyyyMMddHHmmss")) - ldt < 7100)//每两个小时刷新一次
     {
      return INIFile.ContentValue("weixin", "access_token");
     }
    }
    catch
    { }
   }
   string ls_appid = appid.Replace(" ", "");
   string ls_secret = appsecret.Replace(" ", "");
   string access_token = "";
   string url = string.Format("https://api.weixin.qq.com/cgi-bin/token", ls_appid, ls_secret);
   string json_access_token = GetPageInfo(url);
   //DataTable dt = Json.JsonToDataTable(json_access_token);
   DataTable dt = JsonHelper.JsonToDataTable(json_access_token);
   try
   {
    access_token = dt.Rows[0]["access_token"].ToString();
   }
   catch
   {
    return "";
   }
   INIFile.SetINIString("weixin", "gettime", DateTime.Now.ToString("yyyyMMddHHmmss"));
   INIFile.SetINIString("weixin", "access_token", access_token);
   INIFile.SetINIString("weixin", "secondappid", ls_appid);

   return access_token;
  }

  /// <summary>
  /// 获取access_token
  /// </summary>
  public string Get_Access_token()
  {
   string ls_appid = INIFile.ContentValue("weixin", "Appid");
   string ls_secret = INIFile.ContentValue("weixin", "AppSecret");
   return Get_Access_token(ls_appid, ls_secret);
  }

  /// <summary>
  /// Get方法请求url并接收返回消息
  /// </summary>
  /// <param name="strUrl">Url地址</param>
  /// <returns></returns>
  public string GetPageInfo(string url)
  {
   HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(url);
   HttpWebResponse response = (HttpWebResponse)request.GetResponse();

   string ret = string.Empty;
   Stream s;
   string StrDate = "";
   string strValue = "";

   if (response.StatusCode == HttpStatusCode.OK)
   {
    s = response.GetResponseStream();
    ////在这儿处理返回的文本
    StreamReader Reader = new StreamReader(s, Encoding.UTF8);

    while ((StrDate = Reader.ReadLine()) != null)
    {
     strValue += StrDate + "\r\n";
    }
    //strValue = Reader.ReadToEnd();
   }
   return strValue;
  }

  /// <summary>
  /// Post方法
  /// </summary>
  /// <param name="posturl">URL</param>
  /// <param name="postData">Post数据</param>
  /// <returns></returns>
  public string PostPage(string posturl, string postData)
  {
   Stream outstream = null;
   Stream instream = null;
   StreamReader sr = null;
   HttpWebResponse response = null;
   HttpWebRequest request = null;
   Encoding encoding = Encoding.UTF8;
   byte[] data = encoding.GetBytes(postData);
   // 准备请求...
   try
   {
    // 设置参数
    request = WebRequest.Create(posturl) as HttpWebRequest;
    CookieContainer cookieContainer = new CookieContainer();
    request.CookieContainer = cookieContainer;
    request.AllowAutoRedirect = true;
    request.Method = "POST";
    request.ContentType = "application/x-www-form-urlencoded";
    request.ContentLength = data.Length;
    outstream = request.GetRequestStream();
    outstream.Write(data, 0, data.Length);
    outstream.Close();
    //发送请求并获取相应回应数据
    response = request.GetResponse() as HttpWebResponse;
    //直到request.GetResponse()程序才开始向目标网页发送Post请求
    instream = response.GetResponseStream();
    sr = new StreamReader(instream, encoding);
    //返回结果网页（html）代码
    string content = sr.ReadToEnd();
    string err = string.Empty;
    return content;
   }
   catch (Exception ex)
   {
    string err = ex.Message;
    return string.Empty;
   }
  }

  /// <summary>
  /// 格式化字符串
  /// </summary>
  /// <param name="str"></param>
  /// <returns></returns>
  public string GetFormatStr(string str)
  {
   if ("" == str)
    return "";
   else
   {
    str = str.Trim();
    str = str.Replace("'", "'");
    str = str.Replace("〈", "<");
    str = str.Replace("〉", ">");
    str = str.Replace("，", ",");
    return str;
   }
  }
  string ls_username = "";
  /// <summary>
  /// 用户名
  /// </summary>
  public string Wx_username
  {
   get
   {
    return ls_username;
   }
   set
   {
    ls_username = value;
   }
  }
  string ls_openid = "";
  /// <summary>
  /// Openid
  /// </summary>
  public string Wx_openid
  {
   get
   {
    return ls_openid;
   }
   set
   {
    ls_openid = value;
   }
  }
 }

 class INIFile
 {
  ///// <summary>
  ///// 设置INI文件参数
  ///// </summary>
  ///// <param name="section">INI文件中的段落</param>
  ///// <param name="key">INI文件中的关键字</param>
  ///// <param name="val">INI文件中关键字的数值</param>
  ///// <param name="filePath">INI文件的完整的路径和名称</param>
  ///// <returns></returns>
  //[DllImport("kernel32")]
  //private static extern long WritePrivateProfileString(
  // string section, string key, string val, string filePath);

  ///// <summary>
  ///// 获取INI文件参数
  ///// </summary>
  ///// <param name="section">INI文件中的段落名称</param>
  ///// <param name="key">INI文件中的关键字</param>
  ///// <param name="def">无法读取时候时候的缺省数值</param>
  ///// <param name="retVal">读取数值</param>
  ///// <param name="size">数值的大小</param>
  ///// <param name="filePath">INI文件的完整路径和名称</param>
  //[DllImport("kernel32")]
  //private static extern int GetPrivateProfileString(
  // string section, string key, string def, StringBuilder retVal, int size, string filePath);

  //static string gs_FileName = System.AppDomain.CurrentDomain.BaseDirectory + "Config.ini";

  ///// <summary>
  ///// 获取INI文件参数
  ///// </summary>
  ///// <param name="as_section">INI文件中的段落名称</param>
  ///// <param name="as_key">INI文件中的关键字</param>
  ///// <param name="as_FileName">INI文件的完整路径和名称</param>
  //public static string GetINIString(string as_section, string as_key, string as_FileName)
  //{
  // StringBuilder temp = new StringBuilder(255);
  // int i = GetPrivateProfileString(as_section, as_key, "", temp, 255, as_FileName);
  // return temp.ToString();
  //}
  ///// <summary>
  ///// 获取INI文件参数
  ///// </summary>
  ///// <param name="as_section">INI文件中的段落名称</param>
  ///// <param name="as_key">INI文件中的关键字</param>
  ///// <param name="as_FileName">INI文件的完整路径和名称</param>
  //public static string GetINIString(string as_section, string as_key)
  //{
  // return GetINIString(as_section, as_key, gs_FileName);
  //}

  ///// <summary>
  ///// 设置INI文件参数
  ///// </summary>
  ///// <param name="as_section">INI文件中的段落</param>
  ///// <param name="as_key">INI文件中的关键字</param>
  ///// <param name="as_Value">INI文件中关键字的数值</param>
  ///// <param name="as_FileName">INI文件的完整路径和名称</param>
  //public static long SetINIString(string as_section, string as_key, string as_Value, string as_FileName)
  //{
  // return WritePrivateProfileString(as_section, as_key, as_Value, as_FileName);
  //}
  ///// <summary>
  ///// 设置INI文件参数
  ///// </summary>
  ///// <param name="as_section">INI文件中的段落</param>
  ///// <param name="as_key">INI文件中的关键字</param>
  ///// <param name="as_Value">INI文件中关键字的数值</param>
  //public static long SetINIString(string as_section, string as_key, string as_Value)
  //{
  // return SetINIString(as_section, as_key, as_Value, gs_FileName);
  //}
  /// <summary>
  /// 写入INI文件
  /// </summary>
  /// <param name="section">节点名称[如[TypeName]]</param>
  /// <param name="key">键</param>
  /// <param name="val">值</param>
  /// <param name="filepath">文件路径</param>
  /// <returns></returns>
  [DllImport("kernel32")]
  public static extern long WritePrivateProfileString(string section, string key, string val, string filepath);
  [DllImport("kernel32.dll")]
  public extern static int GetPrivateProfileSectionNamesA(byte[] buffer, int iLen, string fileName);
  /// <summary>
  /// 写入INI文件(section:节点名称 key:键 val:值)
  /// </summary>
  /// <param name="section">节点名称</param>
  /// <param name="key">键</param>
  /// <param name="val">值</param>
  /// <returns></returns>
  public static long SetINIString(string section, string key, string val, string as_FilePath = "")
  {
   if (as_FilePath == "")
   {
    return (WritePrivateProfileString(section, key, val, strFilePath));
   }
   else
   {
    return (WritePrivateProfileString(section, key, val, as_FilePath)); 
   }
  }
  /// <summary>
  /// 读取INI文件
  /// </summary>
  /// <param name="section">节点名称</param>
  /// <param name="key">键</param>
  /// <param name="def">值</param>
  /// <param name="retval">stringbulider对象</param>
  /// <param name="size">字节大小</param>
  /// <param name="filePath">文件路径</param>
  /// <returns></returns>
  [DllImport("kernel32")]
  public static extern int GetPrivateProfileString(string section, string key, string def, StringBuilder retval, int size, string filePath);
  public static string strFilePath = Application.StartupPath + "\\Config.ini";//获取INI文件默认路径
  public static string strSec = "";

  //INI文件名


  /// <summary>
  /// 读取INI文件中的内容方法 (Section 节点名称;key 键)
  /// </summary>
  /// <param name="Section">节点名称</param>
  /// <param name="key">键</param>
  /// <returns></returns>
  public static string ContentValue(string Section, string key, string as_FilePath = "")
  {

   StringBuilder temp = new StringBuilder(1024);
   if (as_FilePath == "")
   {
    GetPrivateProfileString(Section, key, "", temp, 1024, strFilePath);
   }
   else
   {
    GetPrivateProfileString(Section, key, "", temp, 1024, as_FilePath); 
   }
   return temp.ToString();
  }
  /// <summary>
  /// 获取指定小节所有项名和值的一个列表 
  /// </summary>
  /// <param name="section">节 段，欲获取的小节。注意这个字串不区分大小写</param>
  /// <param name="buffer">缓冲区 返回的是一个二进制的串，字符串之间是用"\0"分隔的</param>
  /// <param name="nSize">缓冲区的大小</param>
  /// <param name="filePath">初始化文件的名字。如没有指定完整路径名，windows就在Windows目录中查找文件</param>
  /// <returns></returns>
  [DllImport("kernel32")]
  public static extern int GetPrivateProfileSection(string section, byte[] buffer, int nSize, string filePath);
  /// <summary>
  /// 获取指定段section下的所有键值对 返回集合的每一个键形如"key=value"
  /// </summary>
  /// <param name="section">指定的段落</param>
  /// <param name="filePath">ini文件的绝对路径</param>
  /// <returns></returns>
  public static List<string> ReadKeyValues(string section, string as_FilePath = "")
  {
   byte[] buffer = new byte[32767];
   List<string> list = new List<string>();
   int length = 0;
   if (as_FilePath == "")
   {
    length = GetPrivateProfileSection(section, buffer, buffer.GetUpperBound(0), strFilePath);
   }
   else
   {
    length = GetPrivateProfileSection(section, buffer, buffer.GetUpperBound(0), as_FilePath); 
   }
   string temp;
   int postion = 0;
   for (int i = 0; i < length; i++)
   {
    if (buffer[i] == 0x00) //以'\0'来作为分隔
    {
     temp = System.Text.ASCIIEncoding.Default.GetString(buffer, postion, i - postion).Trim();
     postion = i + 1;
     if (temp.Length > 0)
     {
      list.Add(temp);
     }
    }
   }
   return list;
  }
  /// <summary>
  /// 删除指定的key
  /// </summary>
  /// <param name="section">要写入的段落名</param>
  /// <param name="key">要删除的键</param>
  /// <param name="fileName">INI文件的完整路径和文件名</param>
  public static void DelKey(string section, string key, string as_FilePath = "")
  {
   if (as_FilePath == "")
   {
    WritePrivateProfileString(section, key, null, strFilePath);
   }
   else
   {
    WritePrivateProfileString(section, key, null, as_FilePath);
   }
  }
  /// <summary>
  /// 返回该配置文件中所有Section名称的集合
  /// </summary>
  public static ArrayList ReadSections()
  {
   byte[] buffer = new byte[65535];
   int rel = GetPrivateProfileSectionNamesA(buffer, buffer.GetUpperBound(0), strFilePath); 
   int iCnt, iPos;
   ArrayList arrayList = new ArrayList();
   string tmp;
   if (rel > 0)
   {
    iCnt = 0; iPos = 0;
    for (iCnt = 0; iCnt < rel; iCnt++)
    {
     if (buffer[iCnt] == 0x00)
     {
      tmp = System.Text.ASCIIEncoding.UTF8.GetString(buffer, iPos, iCnt - iPos).Trim();
      iPos = iCnt + 1;
      if (tmp != "")
       arrayList.Add(tmp);
     }
    }
   }
   return arrayList;
  } 
 }