DATA Grid View以相同形式刷新 [英] DATA Grid View Refresh in same form

问题描述

大家好，

提前致谢.经过足够的谷歌搜索和尝试并出错之后，我决定在这里写一个非常简单的问题.

我正在TASK上工作，我想在显示屏上显示车辆编号，例如火车站，LED屏幕上显示车辆编号.

我设计了Windows窗体.一个gridview.在此表单中，我仅添加了一个gridview.

根据要求，我一次只能显示3条记录.

我的问题是，在gridview没有添加下三个记录之后，前三个记录显示得很好.

请检查下面的负载车辆数据方法代码:30秒后，我从计时器滴答事件中调用了此方法.我还使用了进程状态变量来检查进程是否在进行中.如果未进行处理，则仅计时器调用加载车辆数据方法的方法

Hello All,

Thanks in advance. After enough googling and try and error I decided to write very simple question here.

I am working on TASK where I want to display vehicle numbers on display like railway station where LED screens shows Vehicle Numbers.

I have designed Windows Form. with one gridview. In this form I have added only one gridview.

According to requirement I have to show only 3 records at a time.

My problem is first three records are getting displayed well after that gridview is not adding next three records.

Please check below code of load vehicle data method :I called this method from timer tick event after 30 seconds. I have also used process status variable which checks that process is in progress or not. If process is not in progress then only timer calls that load vehicle data method

private void loadVehicleNumbers()
       {
           try
           {
               processStatus = 1;
                   DataTable dtVehicleData = ApplicationManager.DAL.getVehicleDetailsWhoseCommissioningIsNotDone();
                   MessageBox.Show("Number of vehicles : "+dtVehicleData.Rows.Count);
                   if (dtVehicleData.Rows.Count > 0)
                   {
                       this.dgv_vehicleNumbers.Rows.Clear();

                       int j = 0;
                       for (int i = 0; i < dtVehicleData.Rows.Count; i++)
                       {
                           if (j == 3)
                           {
                               Thread.Sleep(10000);

                               j = 0;
                               dgv_vehicleNumbers.Rows.Clear();
                               dgv_vehicleNumbers.Update();
                               dgv_vehicleNumbers.Refresh();

                           }

                           string vehicleNumber = dtVehicleData.Rows[i]["VEHICLE_NUMBER"].ToString();
                           string EntryNumber = dtVehicleData.Rows[i]["Entry_NUMBER"].ToString();
                           string drivingLicensenumber = dtVehicleData.Rows[i]["Driver_NUMBER"].ToString();
                           string driver_Name = dtVehicleData.Rows[i]["DRIVER_NAME"].ToString();

                           //MessageBox.Show("Driver License Number :" + drivingLicensenumber);

                           int temp = i + 1;
                           string[] row1 = new string[] { "" + temp, vehicleNumber, driver_Name };
                           this.dgv_vehicleNumbers.Rows.Add(row1);

                           j++;
                           dgv_vehicleNumbers.Update();
                           dgv_vehicleNumbers.Refresh();
                           if (i == (dtVehicleData.Rows.Count - 1))
                           {
                               Thread.Sleep(10000);
                           }

                       }
                   }
                   else
                   {
                       Thread.Sleep(10000);
                   }
                   processStatus = 0;

           }
           catch (Exception ex)
           {
               frmHZLHome.WriteErrorLog(DateTime.Now.ToString("dd/MMM/yyyy HH:mm:ss") + ",Driver Room LED Display ," + ex.Message);
           }
       }

private void timer1_Tick(object sender, EventArgs e)
       {
           if (processStatus == 0)
           {
               MessageBox.Show("Loading  vehicles");
               loadVehicleNumbers();
           }
       }

推荐答案

您好，

所有人从不使用Thread.Sleep();在Windows窗体应用程序中.

根据需要使用计时器.

Hello,

All never use Thread.Sleep(); in windows form application.

Use timers as per your requirement.

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