private bool NewCompany(string itemID) { Company item = new Company(); //all new records will be give a negative int autoid... //when they are updated then sql will generate one for them overiding this set value... //it will allow us to give uniqueness to the tempory new records... //Before they are updated to the entity and given an autoid... //we use a negative number and keep subtracting by 1 for each new item added... //This will allow it to alwasy be unique and never interfere with SQL's positive autoid... _newCompanyAutoId = _newCompanyAutoId - 1; item.AutoID = _newCompanyAutoId; item.CompanyID = itemID; item.IsValid = 1; item.NotValidMessage = "New Record Key Field/s Are Required."; CompanyList.Add(item); _serviceAgent.AddToCompanyRepository(item); SelectedCompany = CompanyList.LastOrDefault(); AllowEdit = true; Dirty = false; return(true); }