Question

我想要做的是每次读取文件时更新UI上的文件计数。同样，它甚至没有显示UI上的文件总数，用户点击browseFolder事件的ok按钮的那一刻。任何帮助将不胜感激。以下是我的代码：

private void browse_Click(object sender, EventArgs e)
    {
        try
        {
            int fileCount = 0;
            string newFileName1 = "";
            string newFileName2 = "";
            week = textBox2.Text;
            if (week == null || week == "")
            {
                MessageBox.Show("Week cannot be null.");
                return;
            }


            DialogResult result = folderBrowserDialog1.ShowDialog();

            if (result == DialogResult.OK)
            {
                int j = 0;
                int totalNoOfFiles = 0;
                DateTime starttime = DateTime.Now;

                string folderPath = folderBrowserDialog1.SelectedPath;
                string folderName = Path.GetFileName(folderBrowserDialog1.SelectedPath);

                totalNoOfFiles = Directory.GetFiles(folderPath, "*.txt", SearchOption.AllDirectories).Length;
                lbltotalfiles.Text = Convert.ToString(totalNoOfFiles);
                progressBar1.Minimum = 0;
                progressBar1.Maximum = totalNoOfFiles;

                DirectoryInfo dInfo = new DirectoryInfo(folderPath);

                foreach (DirectoryInfo folder in dInfo.GetDirectories())
                {
                    newFileName1 = "Files_with_dates_mismatching_the_respective_week_" + folder.Name + ".txt";
                    newFileName2 = "Files_with_wrong_date_format_" + folder.Name + ".txt";

                    if (File.Exists(folderPath + "/" + newFileName1))
                    {
                        File.Delete(folderPath + "/" + newFileName1);
                    }

                    if (File.Exists(folderPath + "/" + newFileName2))
                    {
                        File.Delete(folderPath + "/" + newFileName2);
                    }

                    FileInfo[] folderFiles = folder.GetFiles();

                    if (folderFiles.Length != 0)
                    {
                        List<Task> tasks = new List<Task>();
                        foreach (var file in folderFiles)
                        {
                            fileCount = ++fileCount;
                            lblFilesRead.Text = Convert.ToString(fileCount);
                            progressBar1.Value = ++j;
                            var task = ReadFile(file.FullName, folderPath, folder.Name, week);
                            tasks.Add(task);
                        }

                        Task.WhenAll(tasks.ToArray());
                        DateTime stoptime = DateTime.Now;
                        TimeSpan totaltime = stoptime.Subtract(starttime);
                        label6.Text = Convert.ToString(totaltime);
                        textBox1.Text = folderPath;

                    }
                }
                DialogResult result2 = MessageBox.Show("Read the files successfully.", "Important message", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
        }
        catch (Exception)
        {

            throw;
        }
    }

Answer 1

在您正在阅读/处理文件时，您正在停止负责与用户/重新绘制组件交互的Windows事件队列。您应该不时致电：Application.DoEvents()方法。它将允许应用程序处理消息，如更新标签文本。

如果您想要一个非常好的用户体验，您应该使用另一个线程来处理文件，并使用label.BeginInvoke方法从该线程更新表单上的标签。这是一个很好的教程：http://www.codeproject.com/Articles/10311/What-s-up-with-BeginInvoke

Answer 2

您还可以查看var str = '#/promotionalMailer/test1'; console.log( str.split("/").slice(0,2).join("/"));课程。从长远来看，这可能会更容易维护......

FileSystemWatcher

如何在Windows应用程序中的UI上显示filecount

2 个答案: