internal async Task <bool> IsValidDetailNameAsync( Label errorHandlerLabel, string detailName, bool checkNameUniqueness = true) { if (string.IsNullOrEmpty(detailName)) { ShowErrorMessage(errorHandlerLabel, "Type smthng!"); return(false); } if (detailName.Length > _maxDetailNameLength) { ShowErrorMessage(errorHandlerLabel, "Name is too long."); return(false); } if (checkNameUniqueness) { var isUniqueName = await _detailService.IsUniqueDetailNameAsync(detailName); if (!isUniqueName) { ShowErrorMessage(errorHandlerLabel, "Not unique!"); return(false); } } return(true); }