why not found device obj?

I write driver .Creates an Device Object (name = ICOCTL_1) when the service starts but getlastError function return not_foun_file(code 2)

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 void CUserAppDlg::OnBnClickedbtncreate(){deviceHandle =  CreateFile(L"\\\\.\\IOCTL_1", GENERIC_ALL, 0, 0, OPEN_EXISTING,  FILE_ATTRIBUTE_SYSTEM, 0); DWORD data = GetLastError();  TCHAR s[100]; _stprintf_s(s, _T("%X"), data); MessageBox(s);}