Microsoft.Win32.RegistryKey.InternalGetSubKeyNamesCore C# (CSharp) Method

        private unsafe string[] InternalGetSubKeyNamesCore(int subkeys)
        {
            string[] names = new string[subkeys];
            char[] name = new char[MaxKeyLength + 1];

            int namelen;

            fixed (char* namePtr = &name[0])
            {
                for (int i = 0; i < subkeys; i++)
                {
                    namelen = name.Length; // Don't remove this. The API's doesn't work if this is not properly initialized.
                    int ret = Interop.Advapi32.RegEnumKeyEx(_hkey,
                        i,
                        namePtr,
                        ref namelen,
                        null,
                        null,
                        null,
                        null);
                    if (ret != 0)
                    {
                        Win32Error(ret, null);
                    }

                    names[i] = new string(namePtr);
                }
            }

            return names;
        }