const int WM_DEVICECHANGE = 0x2190;

const int DBT_DEVICEARRIVAL = 0x8000;

const int DBT_DEVICEREMOVECOMPLETE = 0x8004;

protected override void WndProc(ref Message m)

{

try

{

//if (m.Msg == WM_DEVICECHANGE)

//{

switch (m.WParam.ToInt32())

{

case DBT_DEVICEARRIVAL: // U盘插入

DriveInfo[] s = DriveInfo.GetDrives();

foreach (DriveInfo drive in s)

{

if (drive.DriveType == DriveType.Removable)

{

Console.WriteLine("USB插入");

break;

}

}

break;

case DBT_DEVICEREMOVECOMPLETE: //U盘卸载

//

Console.WriteLine("USB卸载");

break;

default:

break;

}

//}

}

catch (Exception ex)

{

MessageBox.Show(ex.Message);

}

base.WndProc(ref m);

}

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