progressBarControl 和 backgroundWorker 同时使用方法

 

  private void BtnGpsExportAll_Click(object sender, EventArgs e)
        {
            if (backgroundWorker1.IsBusy)
            {
                MessageDxUtil.ShowTips("正在执行轨迹导出,请稍后在尝试!");
                return;
            }

            if (this.winGridViewPager1.DataSource is List<QueryScoreInfo> entitys)
            {
                if (MessageDxUtil.ShowYesNoAndTips($"当前页可导出数据共计:{entitys.Count}条,确认导出?") == DialogResult.Yes)
                {
                    // 后台线程查询数据
                    progressBarControl1.Position = 0;
                    this.backgroundWorker1.RunWorkerAsync(entitys);
                    // 读取数据的时候禁用,否则读取数据的时候会调用到最新的日期
                    SetControlEnabled(false);
                    conn.WriteDBLog(null, null, "成绩查询", "页面轨迹导出", "成功", LoginUserInfo, 0, "");
                }
            }
        }
        #endregion

        #region 取消导出
        private void Btn_Cancel_Click(object sender, EventArgs e)
        {
            if (backgroundWorker1.IsBusy)
                backgroundWorker1.CancelAsync();
        }
        #endregion

  private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
            if (e.Argument is List<QueryScoreInfo> entitys)
            {
                string dirSt = this.dateEdit_St.DateTime.ToString("yyyyMMdd");
                string dirEd = this.dateEdit_Ed.DateTime.ToString("yyyyMMdd");


                int index = 1;
                int count = entitys.Count;
                foreach (var entity in entitys)
                {
                    #region 生成轨迹文件
                    string startrq = entity.KSSJ1.Replace(":", "");
                    string endrq = entity.JSSJ1.Replace(":", "");
                    string ksfs = entity.JGFS1.ToString();
                    if (entity.JSSJ2 != null && entity.JSSJ2.Trim().Length > 0)
                    {
                        endrq = entity.JSSJ2.Replace(":", "");
                        ksfs = entity.JGFS2.ToString();
                    }
                    //考生身份证-考试流水号-考试车辆编号-考试分数
                    string carno = entity.KCBH;
                    string sfzhm = entity.ZJHM;
                    string lsh = entity.LSH;
                    startrq = entity.KSRQ1.Replace("-", "") + startrq;
                    endrq = entity.KSRQ1.Replace("-", "") + endrq;
                    DataTable dtgps = conn.GetGpsContent(startrq, endrq, carno, sfzhm);
                    //string SaveGpsPath = "D:\\国华视频";
                    string SaveGpsPath = Path.Combine($"D:\\国华视频", $"{dirSt}-{dirEd}");
                    if (!Directory.Exists(SaveGpsPath)) Directory.CreateDirectory(SaveGpsPath);
                    SaveGpsPath = Path.Combine(SaveGpsPath, $"{sfzhm}_{lsh}_{carno}_{ksfs}.txt");
                    using (FileStream fs = new FileStream(SaveGpsPath, FileMode.Create))
                    {
                        using (StreamWriter sw = new StreamWriter(fs, Encoding.Default))
                        {
                            foreach (DataRow dr in dtgps.Rows)
                            {
                                string gps1 = "";
                                if (dr["GPSCON1"].ToString().IndexOf("KSXT") > -1)
                                {
                                    gps1 = dr["GPSCON1"].ToString();
                                }
                                string gps2 = "";
                                if (dr["GPSCON2"].ToString().IndexOf("KSXT") > -1)
                                {
                                    gps2 = dr["GPSCON2"].ToString();
                                }
                                sw.WriteLine(gps1 + gps2 + "\n");
                            }
                        }
                    }
                    #endregion

                    backgroundWorker1.ReportProgress(index * 100 / count);
                    if (backgroundWorker1.CancellationPending)
                    {
                        e.Cancel = true;
                        return;
                    }
                    index++;
                }
            }
        }

        private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
        {
            progressBarControl1.Position = e.ProgressPercentage;
        }

        private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            progressBarControl1.Position = 100;
            SetControlEnabled(true);
            MessageDxUtil.ShowTips("当前页面下载完成");
        }

 

  private void SetControlEnabled(bool isEnabled)
        {
            btnSearch.Enabled = isEnabled;

            btnDetail.Enabled = isEnabled;
            btnPrint.Enabled = isEnabled;
            btnRePrint.Enabled = isEnabled;
            btnVideoPlay.Enabled = isEnabled;
            btnGpsExport.Enabled = isEnabled;
        }