private void startSearchDraws()
    {
        this.listView.Items.Clear();
        dSearchWorker = new dataDrawSearch.mThreading();
        dSearchWorker.mBackWoker = new BackgroundWorker();
        dSearchWorker.mBackWoker.WorkerReportsProgress = true;
        dSearchWorker.mBackWoker.DoWork += new DoWorkEventHandler(mBackWoker_DoWork);
        dSearchWorker.mBackWoker.ProgressChanged += new ProgressChangedEventHandler(mBackWoker_ProgressChanged);
        dSearchWorker.isCancel = false;
        dSearchWorker.sKey = this.sText.Text;
        dSearchWorker.mBackWoker.RunWorkerAsync();
    }
    private void mBackWoker_DoWork(object sender, DoWorkEventArgs e)
    {
      dataDrawSearch.SearchDraws(dSearchWorker);
    }
    private void mBackWoker_ProgressChanged(object sender, ProgressChangedEventArgs e)
    {
      switch (e.ProgressPercentage)
      {
        case 0:
          this.toolStripStatusLabel1.Text = string.Format("检索结束，共加载了 {0} 条记录，用时 {1:00}.{2:00} 秒", this.listView.Items.Count, ts.Seconds, ts.Milliseconds / 10);
          dSearchWorker.mBackWoker.Dispose();
          break;
        default:
          ListViewItem lvi = (ListViewItem)e.UserState;
          this.listView.Items.Add(lvi);
          this.toolStripStatusLabel1.Text = string.Format("正在检索图纸...  已加载 {0} 项", e.ProgressPercentage);
          Application.DoEvents();
          break;
      }
    }

dataDrawSearch类里面

    public class mThreading
    {
      public System.ComponentModel.BackgroundWorker mBackWoker;
      public string sKey;
      public bool isCancel;
    }
    public static void SearchDraws(mThreading ddsWorker)
    {
      string searchKey = string.Empty, dataBase = string.Empty;
      searchKey = .....//这里省略过程
      dataBase = .....//这里省略过程
      using (MySqlConnection msCon = new MySqlConnection(userInfo.myConnection))
      {
        string sql = string.Format("SELECT * FROM ({0}) AS TEMP WHERE {1}", dataBase, searchKey);
        try
        {
          if (msCon.State == ConnectionState.Closed) { msCon.Open(); }
          using (MySqlCommand msCmd = new MySqlCommand(sql, msCon))
          {
            using (MySqlDataReader msRead = msCmd.ExecuteReader())
            {
              int i = 0;
              while (msRead.Read())
              {
                if (ddsWorker.isCancel) { break; }
                i += 1;
                ListViewItem lvi = new ListViewItem(new string[] { msRead["名称"].ToString(), msRead["日期"].ToString(), msRead["范围"].ToString() });
                lvi.Tag = msRead["路径"].ToString();
                lvi.ImageKey = msRead["类型"].ToString();
                ddsWorker.mBackWoker.ReportProgress(i, lvi);
              }
            }
          }
        }
        catch { }
      }
      ddsWorker.mBackWoker.ReportProgress(0);
    }

在数据几个几十个时不会出错，但是数据到200多左右的时候出会出现那个错误，本人开始以为SQL语句出错了，本人就在SQL语句那调试把SQL语句复制后直接在MysSql Workbench里面执行，可以正常得到结果，有1000多条记录。