C# – How might I receive notifications when a USB device is connected

cdeviceusb

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?

Best Answer

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);
}
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