progressBar1显示datagridview读取数据的进度

Question

我要用进度条progressBar1显示datagridview读取数据的进度，谁能提供个好的代码，新手谢谢大家了！！！

Answer 1

可以用模态对话框进度条的方式实现
http://hi.baidu.com/xdragon/blog/item/b845c650b745f0591138c253.html

Answer 2

这是我考试系统下载试卷的进度显示，你可以参考改一下 private void toolStripButton_DownAnswer_Click(object sender, EventArgs e)//开始下载试卷
        {
            DataCollection<AnswerPaperSDO> source = this.Input;
            if (source == null||source.Count==0)
            {
                MessageBox.Show("请先查找试卷");
                return;
            }
            toolStripProgressBar1.Minimum = 0;
            toolStripProgressBar1.Maximum = source.Count;
            status_Progress.Text = "0/" + source.Count.ToString();
            backgroundWorker1.RunWorkerAsync(source);
        }
  private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
        {
            toolStripProgressBar1.Value = e.ProgressPercentage;
            status_Progress.Text = toolStripProgressBar1.Value.ToString() + "/" +     toolStripProgressBar1.Maximum.ToString();
        }
 private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {
            if (!e.Cancelled)
                MessageBox.Show("学生答卷下载完毕！");
            else
                MessageBox.Show("取消下载");
        }
 private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
            Serailize sera = new Serailize();            if (e.Cancel)
            {
                MessageBox.Show("ff");
                return;
            }
            DataCollection<AnswerPaperSDO> answerPaperCollection = e.Argument as DataCollection<AnswerPaperSDO>;
            for (int i = 0; i < answerPaperCollection.Count; i++)
            {
                if (backgroundWorker1.CancellationPending)
                {
                    e.Cancel = true;
                    return;
                }
                AnswerPaperSDO data = answerPaperCollection[i];
                //找到目录下的试卷目录，
                //如果找到答卷，继续
                //没有写文件
                //answerPaper.PaperId
                string paperPath = getWorkFolder() + data.PaperId.ToString();
                if (!Directory.Exists(paperPath))
                    Directory.CreateDirectory(paperPath);
                string answerPath = paperPath + "\\" +data.StudentCode+"——"+ data.AnswerPaperId.ToString();
                if (!Directory.Exists(answerPath))
                    Directory.CreateDirectory(answerPath);
                string paperName = paperPath + "\\" + data.PaperId.ToString();
                if (!File.Exists(paperName))
                {
                    PaperFullSDO paper = getPaperService().FindFullByID(data.PaperId);
                    sera.ObjectToBin(paper, paperName, false);
                }                string filePath = answerPath + "\\" + data.AnswerPaperId.ToString();
                if (!File.Exists(filePath))
                {
                    AnswerPaperFullSDO answerPaper = getProxy().FindSimpleByID(data.AnswerPaperId);
                    sera.ObjectToBin(answerPaper, filePath, false);
                }
                backgroundWorker1.ReportProgress(i + 1);
            }
        }

Answer 3

The progress you need to get is from business logic code but not DataGridView. For example, when you read data from database, you can create a model dialog window and use multi-threading technology to show the progress on the model dialog window, beause a model window can block the current thread and cause the application not responding.

Answer 4

比如用个Panel或Div，下载完数据后隐藏

Answer 5

进度条progressBar1显示datagridview读取数据的进度，我就是要这样而已，进度条跟datagridview同一个窗体，能给个例子吗/?