c# - 定时器连续循环

Question

我正在将信息从计时器传递到另一个函数，但信息传递后，它会继续传递它。我不想关闭定时器。 有什么办法可以停止循环吗？定时器间隔为 5 秒。

private static List<DirectoryInfo> list_to_copy = new List<DirectoryInfo>();
DirectoryInfo usbdirectory;
backing_up_interface backing_up_interface;
bool newfilesfound = false;

private void usbchecker_timer_Tick(object sender, EventArgs e)
{ 
    foreach (DriveInfo usbname in DriveInfo.GetDrives().Where(usbproperty => usbproperty.DriveType == DriveType.Removable && usbproperty.IsReady))
    {
        if (!Directory.Exists(AppDomain.CurrentDomain.BaseDirectory.ToString() + usbname.VolumeLabel + @"\"))
        {
            usbdirectory = new DirectoryInfo(usbname.Name);
            if (!list_to_copy.Contains(usbdirectory))
            {
                list_to_copy.Add(usbdirectory);
                newfilesfound = true;
            }
        }
    }
    if (newfilesfound == true)
    {
        process_copy();
        newfilesfound = false;
    }
}

//where information is passed to
private void process_copy()
{
    for (int i = 0; i < list_to_copy.Count; i++)
    {
        backing_up_interface = new backing_up_interface(list_to_copy[i]);
        backing_up_interface.Show(); MessageBox.Show(list_to_copy[i].ToString());
    }
}

Answer 1

如果找不到该文件，则创建一个目录。它会阻止它循环。