public bool CheckCodeFormat(string code = null) { if (AssignFieldOnCheck && code != null) { Code = code; } else { code = Code; } var result = _authProvider.CheckCodeFormat(code); // _codeFormatMessage = Array.Find<string>(FormatMessages, p => true); _codeFormatMessage = FormatMessages.FirstOrDefault(); if (IsChatty) { RaisePropertyChanged(nameof(IsCodeFormatOk)); } return(result); }