public void RemoveData()
{
using (var context = new PhotoStudioContext())
{
context.Orders.RemoveRange(context.Orders);
context.Clients.RemoveRange(context.Clients);
context.Options.RemoveRange(context.Options);
context.SaveChanges();
}
}
public void ReadAndWriteOrders()
{
using (StreamReader reader = new StreamReader(OrdersFilePath))
{
while (!reader.EndOfStream)
{
string[] values = reader.ReadLine().Split(';');
Order order = new Order();
order.Client = _newClients[Convert.ToInt32(values[0]) - 1];
order.Option = _newOptions[Convert.ToInt32(values[1]) - 1];
order.Quantity = Convert.ToInt32(values[2]);
order.DateStart = DateTime.Parse(values[3]);
order.DateFinish = DateTime.Parse(values[4]);
_newOrders.Add(order);
}
}
using (var context = new PhotoStudioContext())
{
context.AddRange(_newOrders);
context.SaveChanges();
}
}
public void PrintTables()
{
using (var context = new PhotoStudioContext())
{
var query = context.Orders
.Join(context.Clients, orders => orders.ClientId, clients => clients.Id,
(o, c) => new { OptionId = o.OptionId, Name = c.Name, Surname = c.Surname })
.Join(context.Options, c => c.OptionId, o => o.Id, (c, o) => new { Option = o.Title, Name = c.Name, Surname = c.Surname })
.ToList()
.GroupBy(table => new { table.Surname, table.Name })
.Where(g => g.Count() >= 2);
foreach (var element in query)
{
string[] options = element.Select(q => q.Option).ToArray();
Console.WriteLine($"{element.Key.Name}, {element.Key.Surname}, Ordered Options: {String.Join(',', options)} " +
$"Options Count: {element.Count()}");
}
}
}
