Question

我制作了一个程序，扫描用户选择的文件夹，它将搜索MP3文件和WAV文件，然后它将计算这些文件的总大小，但当它完成所有这些程序是无响应标签将不会更新或只是一半，窗口无法拖动。

如何解决此问题？

下载我的程序的链接：LINK 链接到病毒总数：LINK

编辑：

以下是检查文件大小的代码：

    public string testFileSize(String dir)
    {
        if (MFILE_OPTION_SUBFOLDER_CHECKBOX.Checked == true)
        {
            double totalFileSize = 0;

            if (MFILE_OPTION_MP3_CHECKBOX.Checked == true)
            {
                string[] files = System.IO.Directory.GetFiles(dir, "*.mp3", SearchOption.AllDirectories);
                foreach (string fileName in files)
                {
                    FileInfo fi = new FileInfo(fileName);

                    double fileSize = fi.Length;
                    totalFileSize += fileSize;
                }
            }

            if (MFILE_OPTION_WAV_CHECKBOX.Checked == true)
            {
                string[] files = System.IO.Directory.GetFiles(dir, "*.wav", SearchOption.AllDirectories);
                foreach (string fileName in files)
                {
                    FileInfo fi = new FileInfo(fileName);

                    double fileSize = fi.Length;
                    totalFileSize += fileSize;
                }
            }

            totalFileSize = Math.Round((totalFileSize / 1024f) / 1024f, 2);
            return totalFileSize.ToString() + " MB";
        }
        else
        {
            double totalFileSize = 0;

            if (MFILE_OPTION_MP3_CHECKBOX.Checked == true)
            {
                string[] files = System.IO.Directory.GetFiles(dir, "*.mp3", SearchOption.TopDirectoryOnly);
                foreach (string fileName in files)
                {
                    FileInfo fi = new FileInfo(fileName);

                    double fileSize = fi.Length;
                    totalFileSize += fileSize;
                }
            }

            if (MFILE_OPTION_WAV_CHECKBOX.Checked == true)
            {
                string[] files = System.IO.Directory.GetFiles(dir, "*.wav", SearchOption.TopDirectoryOnly);
                foreach (string fileName in files)
                {
                    FileInfo fi = new FileInfo(fileName);

                    double fileSize = fi.Length;
                    totalFileSize += fileSize;
                }
            }

            totalFileSize = Math.Round((totalFileSize / 1024f) / 1024f, 2);
            return totalFileSize.ToString() + " MB";
        }
    }

这是我尝试的但是它们具有如上所示的所有文件类型^^

                if (MFILE_OPTION_WAV_CHECKBOX.Checked == true)
            {
                BackgroundWorker bw = new BackgroundWorker();
                bw.DoWork += (s, e) =>
                {
                    string[] files = System.IO.Directory.GetFiles(dir, "*.wav", SearchOption.TopDirectoryOnly);
                    foreach (string fileName in files)
                    {
                        FileInfo fi = new FileInfo(fileName);

                        double fileSize = fi.Length;
                        totalFileSize += fileSize;
                    }
                };

                bw.RunWorkerAsync();
            }

但是这会返回0 MB怎么样？

Answer 1

您应该使用BackgroundWorker。如果您提供一些代码，我们可以帮助您更好。到目前为止，我只能给你这个：

BackgroundWorker bw = new BackgroundWorker();
bw.DoWork += (s,e) =>
   {
      // Do your work
   };

bw.RunWorkerAsync();

基于您的代码的示例：

if (MFILE_OPTION_WAV_CHECKBOX.Checked == true)
        {
            BackgroundWorker bw = new BackgroundWorker();
            bw.DoWork += (s, e) =>
            {
                string[] files = System.IO.Directory.GetFiles(dir, "*.wav", SearchOption.TopDirectoryOnly);
                foreach (string fileName in files)
                {
                    FileInfo fi = new FileInfo(fileName);

                    double fileSize = fi.Length;
                    totalFileSize += fileSize;
                }
            };

            bw.RunWorkerCompleted += (s,e) =>
            {
                    //Update GUI
             }

            bw.RunWorkerAsync();
        }

Answer 2

您需要使用BackgroundWorker或类似的东西。

您的表单没有响应，因为您在与用户界面相同的线程中执行主要工作，这就是它没有响应的原因。

如果您想在搜索文件的过程中更新用户界面，还需要使用Invokes来更改值

扫描文件时，C＃Form无响应

2 个答案: