string GetString(SPDRP property)
{
var resultString = new StringBuilder(KERNEL32.DefaultStructBufferSize);
var devInfo = deviceInfo;
var result = SETUPAPI.SetupDiGetDeviceRegistryProperty(Handle, ref devInfo, property, out var valueKind, resultString, (uint)resultString.Capacity, out _);
if (!result)
{
var error = Marshal.GetLastWin32Error();
if (error == 13)
{
return(null);
}
if (error != 0)
{
throw new Win32ErrorException(error);
}
}
switch (valueKind)
{
case RegistryValueKind.Binary: throw new InvalidCastException(string.Format("Please use GetData() for BINARY values!"));
case RegistryValueKind.DWord: throw new InvalidCastException(string.Format("Please use GetUInt32() for DWORD values!"));
case RegistryValueKind.QWord: throw new InvalidCastException(string.Format("Please use GetUInt64() for QWORD values!"));
case RegistryValueKind.MultiString: break;
case RegistryValueKind.String: break;
default: throw new NotImplementedException(string.Format("Not implemented registry value kind {0}!", valueKind));
}
return(resultString.ToString());
}
/// <summary>
/// Releases the handle
/// </summary>
/// <returns></returns>
protected override bool ReleaseHandle()
{
if (IsInvalid)
{
return(true);
}
SETUPAPI.SetupDiDestroyDeviceInfoList(DangerousGetHandle());
SetHandle(IntPtr.Zero);
return(true);
}
/// <summary>
/// Obtains a list of all present (active and inactive) devices
/// </summary>
/// <returns>Returns an array of <see cref="DEVICE"/>s</returns>
public static DEVICE[] GetAllPresentDevices()
{
var devices = new List <DEVICE>();
var guid = new Guid();
var handle = SETUPAPI.SetupDiGetClassDevs(ref guid, null, IntPtr.Zero, DIGCF.ALLCLASSES | DIGCF.PRESENT);
if (handle.IsInvalid)
{
throw new Win32ErrorException();
}
var info = new SP_DEVINFO_DATA();
info.cbSize = (uint)Marshal.SizeOf(info);
for (uint i = 0; SETUPAPI.SetupDiEnumDeviceInfo(handle, i, ref info); i++)
{
var device = new DEVICE(handle, info);
devices.Add(device);
}
return(devices.ToArray());
}