Question

我用C＃构建了我的第一个Windows窗体，我开始遇到一些没有响应的问题。这只发生在我开始点击其他地方或开始做其他事情时。我研究了一些并了解到线程可能有所帮助，但无法弄清楚我应该如何做到这一点。以下是我现在正在尝试的内容。

 private void bPrint_Click(object sender, EventArgs e)
        {
bPrint.Enabled = false;
            string cusNo = Strings.Left(cbCustomerList.SelectedItem.ToString(), 4);
            ReportDocument reportDocument = new ReportDocument();


                        switch (cusNo)
            {

                case "4018":

                    try
                    {
                        Thread backgroundThread2 = new Thread(
                        new ThreadStart(() =>

                            FixPhoneNumbers(orderData, cusNo, dtpBeginDate.Value, dtpEndDate.Value,
                            Settings.Default["Location"].ToString(), lProgress)));


                        backgroundThread2.Start();
                        Thread backgroundThread3 = new Thread(
                        new ThreadStart(() =>

                            CreateBol(orderData, cusNo, dtpBeginDate.Value, dtpEndDate.Value,
                             Settings.Default["Location"].ToString(), lProgress)));

                        backgroundThread3.Start();
                        Thread backgroundThread4 = new Thread(
                        new ThreadStart(() =>

                            CreateUccPerLine(orderData, cusNo, dtpEndDate.Value, dtpEndDate.Value,
                            Settings.Default["Location"].ToString(), lProgress)));


                        backgroundThread4.Start();

                    }
                    catch (Exception ex)
                    {
                        MessageBox.Show(ex.Message, "Loading " + ex.Message, MessageBoxButtons.OK,
                            MessageBoxIcon.Exclamation, MessageBoxDefaultButton.Button1,
                            MessageBoxOptions.ServiceNotification);

                    }
                    finally
                    {

                        Thread backgroundThread1 = new Thread(
                        new ThreadStart(() =>

                            AssignProNumber(orderData, cusNo, dtpBeginDate.Value, dtpEndDate.Value,
                               Settings.Default["Location"].ToString(), lProgress)));


                        backgroundThread1.Start();

                        LoadDS(orderData, cusNo, dtpBeginDate.Value, dtpEndDate.Value,
                            Settings.Default["Location"].ToString(), lProgress);


                        PrintReport(orderData, reportDocument, "psWalmart.rpt",
                            Settings.Default["RegularPrinter"].ToString(), Settings.Default["LabelPrinter"].ToString());


                        PrintReport(orderData, reportDocument, "lbWalmart.rpt",
                            Settings.Default["RegularPrinter"].ToString(), Settings.Default["LabelPrinter"].ToString());

                        PrintReport(orderData, reportDocument, "boWalmart.rpt",
                            Settings.Default["RegularPrinter"].ToString(), Settings.Default["LabelPrinter"].ToString());

                        PrintReport(orderData, reportDocument, "qtyOrderedReport.rpt",
                            Settings.Default["RegularPrinter"].ToString(), Settings.Default["LabelPrinter"].ToString());

                        PrintReport(orderData, reportDocument, "qtyOrderedGreaterOne.rpt",
                            Settings.Default["RegularPrinter"].ToString(), Settings.Default["LabelPrinter"].ToString());
                    }



                    break;
}

Answer 1

这样做的新方法是使用Task

示例

private void bPrint_Click(object sender, EventArgs e) { await Task.Run(() => { FixPhoneNumbers(orderData, cusNo, dtpBeginDate.Value, dtpEndDate.Value, Settings.Default["Location"].ToString(), lProgress))) }); }

您还可以运行多项任务

private void bPrint_Click(object sender, EventArgs e) { var task1 = DoWorkAsync(); var task2 = DoMoreWorkAsync(); await Task.WhenAll(task1, task2); }

Task.WhenAll

Answer 2

在线程内执行的代码按顺序执行，因此要一个接一个地运行多个方法，只需将它们写在线程代码中的不同行中，就像使用任何C＃代码一样。

我强烈建议在c＃而不是线程中查看Tasks，它们会更容易一些。

同样可能Async / Await值得一试，但我不确定winforms将如何支持它。

Answer 3

瑞恩

我使用线程基本上处理ASP.NET站点中的批处理。该线程进程将在另一个线程中运行ProcessMyData（）方法。

//Create new object and start processing
MySite.Data.ProcessData Batch = new Data.ProcessData();
Batch.StartBatchProcessing();

//The StartBatchProcessing() Creates the new thread
public void StartBatchProcessing()
{    
    //ProcessMyData is the main method that will process the batch data
    Thread newThread = new Thread(this.ProcessMyData); //another thread
    newThread.Priority = ThreadPriority.Normal;
    newThread.Start();
}

参考Why ‘Normal’ Load Testing Isn’t Enough了解更多详情

如何在新线程上一个接一个地运行多个方法

3 个答案: