C# 在这种情况下如何使用backgroundworker？

我有一个关于后台工作人员实际如何工作的问题。我不太确定它将如何与不同的方法工作

例如，我有以下代码（为了便于说明而改编自）：

private void getDateTime（）
{
DateTime startTime=DateTime.Now；
双值=数学E；
while（DateTime.Now
//make sure background worker report progress
backgroundWorker1.WorkerReportsProgress = True;


private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
    progressBar1.Value = e.ProgressPercentage;
    progressBar1.Refresh;
    //if your progressbar is on a status strip, you need to refresh the status strip instead
}

我想出了一个相当不雅观的解决方案。但它满足了用户友好性的要求，所以…不管什么可行：p

谢谢你的反馈，我很感激

不管怎样，代码如下：

    private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
    {
        backgroundWorker1.ReportProgress(1); //to invoke ProgressChanged
        t3 = runComparison(); //run intensive method
        e.Result = t3; //return DataTable
    }

    private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
    {
        progressBar1.Visible = true; //display a label
        textBoxProgress.Visible = true; //display the progress bar
        //change the progress bar style
        //the Marquee style is constantly running, so it could show users the process is working
        //not too sure how to explain it, you'll have to try it out. 
        progressBar1.Style = ProgressBarStyle.Marquee; 
    }

    private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
    {
        if (e.Error != null)
        {
            MessageBox.Show("An unexpected error has occurred. Please try again later.", "ERROR!", MessageBoxButtons.OK, MessageBoxIcon.Error);
        }
        else
        {
            //reset the display and update the DataGridView
            progressBar1.Visible = false;
            textBoxProgress.Visible = false;
            progressBar1.Style = ProgressBarStyle.Blocks;
            dataGridView1.DataSource = e.Result;
        }
    }

不要使用for循环来解析数据表，在BackgroundWorker调用的方法中解析数据表并返回最终结果。@jags我已经在使用for循环来解析方法中的数据表。如果我在BackgroundWorker中使用for循环来获得进度，我将在DataTable方法中反复执行for循环增益。GetDataTable方法是否与getDateTime方法有关？如果不是，为什么不使用其他backgroundworker？如果是，请尝试在for循环之前调用GetDataTable？您不必使用单独的\extra for循环来报告进度。您可以使用用于分析数据选项卡的相同for循环来报告进度如果您提供runComparison（）方法实现，也许我们可以帮助您完成报告过程。
//make sure background worker report progress
backgroundWorker1.WorkerReportsProgress = True;


private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
    progressBar1.Value = e.ProgressPercentage;
    progressBar1.Refresh;
    //if your progressbar is on a status strip, you need to refresh the status strip instead
}

    private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
    {
        backgroundWorker1.ReportProgress(1); //to invoke ProgressChanged
        t3 = runComparison(); //run intensive method
        e.Result = t3; //return DataTable
    }

    private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
    {
        progressBar1.Visible = true; //display a label
        textBoxProgress.Visible = true; //display the progress bar
        //change the progress bar style
        //the Marquee style is constantly running, so it could show users the process is working
        //not too sure how to explain it, you'll have to try it out. 
        progressBar1.Style = ProgressBarStyle.Marquee; 
    }

    private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
    {
        if (e.Error != null)
        {
            MessageBox.Show("An unexpected error has occurred. Please try again later.", "ERROR!", MessageBoxButtons.OK, MessageBoxIcon.Error);
        }
        else
        {
            //reset the display and update the DataGridView
            progressBar1.Visible = false;
            textBoxProgress.Visible = false;
            progressBar1.Style = ProgressBarStyle.Blocks;
            dataGridView1.DataSource = e.Result;
        }
    }