How might I receive notifications when a USB device is connected?

Question

I'm writing a program to monitor a specific device. This device may or may not always be connected, and when connected may be connected to any one of several different ports; I'd like my program to handle this gracefully.

Is there a way to receive notifications when a specific USB device is connected, and from there to determine which port it is connected to?

Answer 1

Check out this thread on SO. Specifically the accepted answer which uses SharpUSBLib.

HTH -Jay

Answer 2

To get an information if any hardware device has changed you can add the following code to your main form:

/// <summary>
/// Windows Messages
/// Defined in winuser.h from Windows SDK v6.1
/// Documentation pulled from MSDN.
/// For more look at: http://www.pinvoke.net/default.aspx/Enums/WindowsMessages.html
/// </summary>
public enum WM : uint
{
 /// <summary>
 /// Notifies an application of a change to the hardware configuration of a device or the computer.
 /// </summary>
 DEVICECHANGE = 0x0219,
}

protected override void WndProc(ref Message m)
{
 switch ((WM)m.Msg)
 {
  case WM.DEVICECHANGE:
   //ToDo: put your code here.
   break;
 }
 base.WndProc(ref m);
}