internal static IEnumerable <object> GetDevicePropertyKeys(IntPtr deviceInfoSet, object deviceInfoData)
{
var devInfo = (SP_DEVINFO_DATA)deviceInfoData;
var keys = new DEVPROPKEY[1];
uint requiredPropertyKeyCount;
if (!NativeMethods.SetupDiGetDevicePropertyKeys(deviceInfoSet, ref devInfo, ref keys[0], (uint)keys.Length, out requiredPropertyKeyCount, 0))
{
if (Marshal.GetLastWin32Error() == ERROR_INSUFFICIENT_BUFFER)
{
keys = new DEVPROPKEY[requiredPropertyKeyCount];
if (NativeMethods.SetupDiGetDevicePropertyKeys(deviceInfoSet, ref devInfo, ref keys[0], (uint)keys.Length, out requiredPropertyKeyCount, 0))
{
return(keys.Cast <object>()); // .Select(k => (object)k);
}
else
{
throw new System.ComponentModel.Win32Exception();
}
}
else
{
throw new System.ComponentModel.Win32Exception();
}
}
return(null);
}
