/// <summary>
/// Internally handle state changes and notify listeners.
/// </summary>
/// <param name="e"></param>
private void DoStateChanged(UsbStateChangedEventArgs e)
{
if (handler != null)
{
UsbDisk disk = e.Disk;
// we can only interrogate drives that are added...
// cannot see something that is no longer there!
if ((e.State == UsbStateChange.Added) && (e.Disk.Name[0] != '?'))
{
// the following Begin/End invokes looks strange but are required
// to resolve a "DisconnectedContext was detected" exception which
// occurs when the current thread terminates before the WMI queries
// can complete. I'm not exactly sure why that would happen...
GetDiskInformationDelegate gdi = new GetDiskInformationDelegate(GetDiskInformation);
IAsyncResult result = gdi.BeginInvoke(e.Disk, null, null);
gdi.EndInvoke(result);
}
handler(e);
}
}
private void DoStateChanged(UsbStateChangedEventArgs e)
{
if (e.State == UsbStateChange.Added)
{
Drive addedDrive = new Drive("?", "", "Unknown drive", true, false);
// Managing lists and naming
string infoLabel = GetDriveInfo(e.Disk.Name + "\\");
var drive = drivesList.Where(p => (String.Equals(p.Label, e.Disk.ToString(), StringComparison.CurrentCulture) || String.Equals(p.Label, infoLabel, StringComparison.CurrentCulture)));
if (drive.Count() > 0) // if it is in the list
{
foreach (Drive d in drive)
{
d.Connected = true;
addedDrive = d;
}
//drivesList.ElementAt(drivesList.IndexOf(drive.ToList().First())).Connected = true;
//addedDrive = drivesList.ElementAt(drivesList.IndexOf(drive.ToList().First()));
}
else // if it isn't in the list
{
string label;
if (e.Disk.ToString().Length > infoLabel.Length)
{
label = e.Disk.ToString();
}
else
{
label = infoLabel;
}
addedDrive = new Drive(e.Disk.Name[0].ToString(), e.Disk.Name + "\\", label, true, false);
drivesList.Add(addedDrive);
myDevicesGrid.Rows.Add(false, label);
//System.IO.File.AppendAllText(knownDrivesFile, label + NL);
}
if (monitoring)
{
ProcessDrive(addedDrive);
}
// check for any additional drives that might have came with this one
AddRemovebleDrives(monitoring);
//DumpDrivesInfo();
}
else if (e.State == UsbStateChange.Removed)
{
//DumpDrivesInfo();
//System.IO.File.AppendAllText(coutFile, NL + rec.ToString()); // check if null
// Check by notification
var connectedDrives = drivesList.Where(p => p.Connected);
var existantDrivesRoots = GetRemovableDrivesRoots();
foreach (Drive drive in connectedDrives)
{
if (!existantDrivesRoots.Contains(drive.RootDirectory))
{
drivesList.ElementAt(drivesList.IndexOf(drive)).Connected = false;
}
}
//DumpDrivesInfo();
}
}
