删除异步文件和子文件夹并在进度条中显示状态百分比

Question

基本上我有一个文件夹，里面有一些文件和其他文件夹（也有文件），我想通过在两个进度条 windows 表单控件中显示操作的百分比来执行主删除. 第一个进度条应显示 "x file from y files from z directory is being deleted"，第二个进度条应显示整体进程百分比。

第一个进度条示例：删除 (1/100) D:\folder\file.extension （其中 1 是要删除的文件数，100 是该文件夹中的文件数）但是如果有人能告诉我一种方法也只有一个进度条（第一个），那将非常有帮助。

到目前为止，这是我的代码：

 private int deleted = 0;
 private int total = 0;

    private void RemoveDirectories(string strpath)
    {
        if (Directory.Exists(strpath))
        {
            DirectoryInfo dirInfo = new DirectoryInfo(strpath);

            foreach (FileInfo file in dirInfo.GetFiles())
            {
                //file.Delete();
                total += (int) file.Length;
                deleted /= 1024;
                progressBar1.Step = deleted;
                progressBar1.PerformStep();

            }
            foreach (DirectoryInfo dir in dirInfo.GetDirectories())
            {
                //dir.Delete(true);
                total += dir.GetFiles().Length;
                deleted /= 1024;
                progressBar1.Step = deleted;
            }
        }
    }

    private void button1_Click(object sender, EventArgs e)
    {
        RemoveDirectories(Environment.GetFolderPath(Environment.SpecialFolder.Desktop) + "\dex");
    }

Answer 1

有一些错误：

1- deleted 始终为 0，因此不会执行任何操作 2-Step 表示 bar 会增加多少，应该是 1 3- 你没有设置最大值，所以它总是 100 4-你在 UI 线程上做了所有这些，它会阻塞 UI 直到操作完成，所以即使你纠正了之前的错误，你也只会看到从 0 到 max 的跳转，您需要在工作线程中执行此操作并使用 Invoke()

更新 UI

这里是你修改的函数：

    private void RemoveDirectories(string strpath)
    {
        ThreadPool.QueueUserWorkItem((o) =>
        {
            if (Directory.Exists(strpath))
            {
                DirectoryInfo dirInfo = new DirectoryInfo(strpath);
                var files = dirInfo.GetFiles();
                 //I assume your code is inside a Form, else you need a control to do this invocation;
                this.BeginInvoke(new Action(() =>
                {
                    progressBar1.Minimum = 0;
                    progressBar1.Value = 0;
                    progressBar1.Maximum = files.Length;
                    progressBar1.Step = 1;
                }));

                foreach (FileInfo file in files)
                {
                    //file.Delete();
                    this.BeginInvoke(new Action(() => progressBar1.PerformStep())); //I assume your code is inside a Form, else you need a control to do this invocation;

                }

                var dirs = dirInfo.GetDirectories();

                this.BeginInvoke(new Action(() =>
                {
                    progressBar1.Value = 0;
                    progressBar1.Maximum = dirs.Length;
                }));

                foreach (DirectoryInfo dir in dirs)
                {
                    //dir.Delete(true);
                    this.BeginInvoke(new Action(() => progressBar1.PerformStep())); //I assume your code is inside a Form, else you need a control to do this invocation;
                }

            }
        }, null);
    }

删除异步文件和子文件夹并在进度条中显示状态百分比

Delete Async Files & Subfolder and Show Status Percentage in Progressbar

c#

file

timer

count

percentage