public List <List <string> > ValidateImportList(List <BirdSurvey> toSave) { List <string> SPAErrors = new List <string>(); List <string> SurveyorErrors = new List <string>(); List <string> SpeciesErrors = new List <string>(); List <string> ClimateErrors = new List <string>(); List <List <string> > validations = new List <List <string> >(); foreach (BirdSurvey survey in toSave) { if (_generalRepo.GetSamplePointAreaByName(survey.SamplePointAreaName) == null) { SPAErrors.Add(survey.SamplePointAreaName); } survey.ClimateID = this.GetWeatherIDByDate(survey.SurveyDate); if (_birdRepo.GetSurveyorByName(survey.SurveyorName) == null) { SurveyorErrors.Add(survey.SurveyorName); } foreach (BirdSurveyDetails detail in survey.Details) { if (_birdRepo.GetSpeciesByName(detail.SpeciesName) == null) { SpeciesErrors.Add(detail.SpeciesName); } } } validations.Add(SPAErrors.Distinct().ToList()); validations.Add(SurveyorErrors.Distinct().ToList()); validations.Add(ClimateErrors.Distinct().ToList()); validations.Add(SpeciesErrors.Distinct().ToList()); return(validations); }