我有那种检索NTFS的可移动设备信息的方法：
private void getdriverinfo()
{
// get the usb flash driver
foreach (DriveInfo driveInfo in DriveInfo.GetDrives())
{
if (driveInfo.DriveType == DriveType.Removable && driveInfo.DriveFormat.Equals("NTFS"))
{
comboBox1.Items.Add(driveInfo.Name);
}
}
if (comboBox1.Items.Count == 0)
{
MessageBox.Show("No Removable Device Found , please plug in the USB drive and make sure it is in NTFS format and retry", "No Device Found!", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
else if (comboBox1.Items.Count == 1)
{
comboBox1.Text = comboBox1.Items[0].ToString();
}
else
{
MessageBox.Show(comboBox1.Items.Count + " Removable Devices were found , please choose the device you want to protect");
}
}
private void Form1_Load(object sender, EventArgs e)
{
// get the usb flash driver
getdriverinfo();
}
发生此错误：
System.IO.IOException：设备尚未就绪。
at System.IO .__ Error.WinIOError（Int32 errorCode，String maybeFullPath）
at System.IO .__ Error.WinIODriveError（String driveName，Int32 errorCode）
在System.IO.DriveInfo.get_DriveFormat（）
在USB_Data_Protector.Form1.getdriverinfo（）
这在我的笔记本电脑上工作正常，没有错误。当它在虚拟PC或其他电脑上运行时，会出现此错误。