Microsoft.Win32.RegistryKey.InternalValueCountCore C# (CSharp) Méthode

        private int InternalValueCountCore()
        {
            int values = 0;
            int junk = 0;
            int ret = Interop.Advapi32.RegQueryInfoKey(_hkey,
                                      null,
                                      null,
                                      IntPtr.Zero,
                                      ref junk,     // subkeys
                                      null,
                                      null,
                                      ref values,   // values
                                      null,
                                      null,
                                      null,
                                      null);
            if (ret != 0)
            {
                Win32Error(ret, null);
            }

            return values;
        }