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();
        }
Exemple #2
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        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}");
                    }
                }
            }
        }