USB设备在C＃中设置属性

Question

我有这段代码：

DriveInfo[] myDrives = DriveInfo.GetDrives();
foreach (DriveInfo myDrive in myDrives)
{
    if (myDrive.DriveType == DriveType.Removable)
    {
        string path = Convert.ToString(myDrive.RootDirectory);
        DirectoryInfo mydir = new DirectoryInfo(path);
        String[] dirs = new string[] {Convert.ToString(mydir.GetDirectories())};
        String[] files = new string[] {Convert.ToString(mydir.GetFiles())};

        foreach (var file in files)
        {
            File.SetAttributes(file, ~FileAttributes.Hidden);
            File.SetAttributes(file, ~FileAttributes.ReadOnly);
        }

        foreach (var dir in dirs)
        {
            File.SetAttributes(dir, ~FileAttributes.Hidden);
            File.SetAttributes(dir, ~FileAttributes.ReadOnly);
        }        
    }
}

我有问题。它首先尝试软盘驱动器的代码，因为它没有软盘，它抛出了错误The device is not ready.我该如何防止这种情况？