static void NotMain(string[] args) { var db = new PlacesWeWillGoContext(); // CREATE // db.Cities.Add(new City // { // Name = "Tampa", // Climate = "Hoooooot", // Population = 100000, // SizeInSquareMiles = 25, // State = "FL", // Elevation = 0 // }); db.SaveChanges(); // READ var stPete = db.Cities.FirstOrDefault(city => city.Name == "St Pete"); var cali = db.Cities.Where(city => city.State == "CA"); foreach (var city in cali) { Console.WriteLine(city.Name); } // UPDATE var tampa = db.Cities.FirstOrDefault(city => city.Name == "Tampa"); tampa.Population = tampa.Population + 300; db.SaveChanges(); // DELETE ONE var dupe = db.Cities.FirstOrDefault(city => city.Name == "Tampa"); if (dupe != null) { db.Cities.Remove(dupe); db.SaveChanges(); } // DELETE MULTIPLE var allTampas = db.Cities.Where(city => city.Name == "Tampa"); db.Cities.RemoveRange(allTampas); db.SaveChanges(); }
static void Main(string[] args) { var input = ""; var db = new PlacesWeWillGoContext(); while (input != "quit") { Console.WriteLine("You want to go ...."); Console.WriteLine(":=========================:"); // var places = db.Cities.OrderBy(o => o.Name); var places = db.Cities.Where(city => !city.Visited).OrderBy(city => city.Name); foreach (var city in places) { Console.WriteLine($"{city.Name} in {city.State}, that has a climate of {city.Climate}"); } Console.WriteLine(":=========================:"); Console.WriteLine("Do you want (add) a city, have you (been) to a city, or (all)?"); input = Console.ReadLine(); if (input == "add") { // expected input is City, State, Climate Console.WriteLine("Where would you like to go?"); input = Console.ReadLine(); var data = input.Split(','); var newPlace = new City { Name = data[0], State = data[1], Climate = data[2] }; db.Cities.Add(newPlace); db.SaveChanges(); Console.WriteLine($"Successfully Saved {newPlace.Name}"); } else if (input == "been") { Console.WriteLine("Where did you go?"); input = Console.ReadLine(); // update the city they type it. // find it, var placeIWent = db.Cities.FirstOrDefault(city => city.Name.ToLower() == input.ToLower()); if (placeIWent != null) { // update placeIWent.Visited = true; // save it db.SaveChanges(); } else { Console.WriteLine($"{input} was not found, but I hope you had a great trip "); var surpriseTrip = new City { Name = input, Visited = true }; db.Cities.Add(surpriseTrip); db.SaveChanges(); } } else if (input == "all") { var allCities = db.Cities.OrderBy(o => o.Name).ThenBy(t => t.Visited); foreach (var city in allCities) { Console.WriteLine($"{city.Name}, {city.Visited}"); } } } }