@msdn=http://search.microsoft.com/search/results.aspx?qu=$$$ @pinvoke=http://pinvoke.net/$$$.htm Retrieves the serial number string from a connected device. !!!!C# Signature: [DllImport("hid.dll", SetLastError=true)] static extern bool HidD_GetSerialNumberString(IntPtr HidDeviceObject, byte[] Buffer, Int32 BufferLength); !!!!VB Signature: Declare Function HidD_GetSerialNumberString Lib "hid.dll" (TODO) As TODO !!!!User-Defined Types: None. !!!!Alternative Managed API: Do you know one? Please contribute it! !!!!Notes: None. !!!!Tips & Tricks: The string that is returned is unicode and therefore needs to be converted for most use cases. !!!!Sample Code: string devicePath = "<your device path>"; // Open the device deviceHandle = CreateFile(devicePath, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, IntPtr.Zero, OPEN_EXISTING, FILE_FLAG_OVERLAPPED, IntPtr.Zero); string sn = ""; byte[] buffer = new byte[128]; // attempt to read the serial number string if (HidD_GetSerialNumberString(HIDDeviceHandle, buffer, buffer.Length)) { // convert from unicode to the default encoding sn = Encoding.Default.GetString(Encoding.Convert(Encoding.Unicode, Encoding.Default, buffer)); } // Trim the string down by removing any '\0' characters sn = sn.Remove(sn.IndexOf('\0')); Documentation: HidD_GetSerialNumberString@msdn on MSDN
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