public static void ExecuteCommandReader(IReaderService proxy, int op) { string name = ""; if (op != 0) { name = HelperFunctions.ReadDatabaseName(); } try { switch (op) { case 1: CheckIfExecuted(proxy.CreateDB(name).Item1); break; case 2: CheckIfExecuted(proxy.DeleteDB(name).Item1); break; case 3: Element tmpElem = Element.LoadFromConsole(); CheckIfExecuted(proxy.WriteDB(name, tmpElem).Item1); break; case 4: List <Element> elems = proxy.ReadDB(name).Item1; Console.WriteLine("Ids of all elements:"); DisplayAllElements(elems, true); Element toEdit = GetElementToEdit(elems); Element newElem = Element.LoadFromConsole(); newElem.Id = toEdit.Id; CheckIfExecuted(proxy.EditDB(name, newElem).Item1); break; case 5: DisplayAllElements(proxy.ReadDB(name).Item1); break; case 6: string city = HelperFunctions.ReadCity(); float medianMonthlyIncomeByCity = proxy.MedianMonthlyIncomeByCity(name, city).Item1; if (medianMonthlyIncomeByCity >= 0) { Console.WriteLine("Prosecna plata za grad " + city + ": " + medianMonthlyIncomeByCity); } break; case 7: string country = HelperFunctions.ReadCountry(); Console.WriteLine("Unesi godinu:"); int year = int.Parse(Console.ReadLine()); float medianMonthlyIncome = proxy.MedianMonthlyIncome(name, country, year).Item1; if (medianMonthlyIncome >= 0) { Console.WriteLine("Prosecna plata za " + country + " u " + year + " god.:" + medianMonthlyIncome); } break; case 8: var tmpDict = proxy.MaxIncomeByCountry(name).Item1; Console.WriteLine("Najveca plata za svaku drzavu:"); foreach (KeyValuePair <string, Element> kvp in tmpDict) { Console.WriteLine(kvp.Key + " : id:" + kvp.Value.Id + " plata:" + kvp.Value.Income); } break; case 0: Console.WriteLine("Cao poz"); break; } } catch (Exception e) { Console.WriteLine(e.Message); } }