ARUTMLTH 1.0.2

Microsoft.AspNetCore.Mvc.NewtonsoftJson
services.AddControllers().AddNewtonsoftJson(o => o.SerializerSettings.ReferenceLoopHandling = Newtonsoft.Json.ReferenceLoopHandling.Ignore);

Dotnet controller
[FromQuery] ?sort=asc

using var transaction = Context.Database.BeginTransaction();
bike.Id = id;
var c = await Context.Bikes.FindAsync(id);
Context.Bikes.Remove(c);
Context.Bikes.Add(bike);
await Context.SaveChangesAsync();
await transaction.CommitAsync();

var startedRental = await Context.Rentals.FirstAsync();
startedRental.End = System.DateTime.Now;
startedRental.TotalCosts = CostCalculation.CalculateTotalCost(startedRental);
startedRental.Customer = await Context.Customers.FindAsync(rental.CustomerID);
startedRental.Bike = await Context.Bikes.FindAsync(rental.BikeID);
Context.Rentals.Update(startedRental);
await Context.SaveChangesAsync();

var result=await unpaid
.Include(c => c.Customer)
.Select(item => new { item.CustomerID, item.Customer.LastName, item.Customer.FirstName, item.Id, item.Begin, item.End })
.ToListAsync();

return (await dataContext.Deposits.Include("Membership.Member").ToArrayAsync())
.GroupBy(d => new { d.Membership.Begin.Year, d.Membership.Member })
.Select(i => new DepositStatistics
{
Year = i.Key.Year,
Member = i.Key.Member,
TotalAmount = i.Sum(d => d.Amount)
});
using var transaction = Database.BeginTransaction();
await Database.ExecuteSqlRawAsync("DELETE FROM Taxis");
await Database.ExecuteSqlRawAsync("DELETE FROM Drivers");
await Database.ExecuteSqlRawAsync("DELETE FROM Rides");
await transaction.CommitAsync();
var result = await Rides.Where(e => e.Start.Year == year and e.Start.Month == month).ToListAsync();         
var drivers=result.GroupBy(d => d.Driver);
var ret=drivers.Select(b => new DriverStatistics
{
DriverName = b.Key.Name,
TotalCharge = b.Sum(d => d.Charge) ?? 0
});
public async Task T> GetFromServiceAsync T>(string path)
{

var response = await client.GetStringAsync(BASE_URL + path);
return JsonSerializer.Deserialize T>(response, new JsonSerializerOptions { PropertyNameCaseInsensitive = true });
}
public async Task HttpResponseMessage> PostToServiceAsync T>(string path, T payload )
{
var body = new StringContent(JsonSerializer.Serialize T>(payload), Encoding.UTF8, "application/json");
var response = await client.PostAsync(BASE_URL + path,body);
return response;
}
WPF GUI
BindableBase
Customers customers = new Customers(Customer, client);
customers.Show();
MainWindow.Close.Execute();


ComboBox ItemsSource="{Binding Taxis}" DisplayMemberPath="LicensePlate" SelectedItem="{Binding SelectedTaxi}" />
UpdateSourceTrigger=PropertyChanged
DataGrid Name="TaskTable" ItemsSource="{Binding Tasks}" RowEditEnding="TaskTable_RowEditEnding" AutoGenerateColumns="False" >
DataGrid.Columns>
DataGridTextColumn Header="TaskId"  Binding="{Binding TaskId, UpdateSourceTrigger=LostFocus}"/>

public async void TaskTable_RowEditEnding(object sender, DataGridRowEditEndingEventArgs e)
{
var task = e.Row.Item as Task;
await GetTasks();
if (task != null and task.Name == String.Empty)
{
var result = await client.DeleteToServiceAsync("Tasks/" + task.TaskId);
MessageBox.Show("DELETE" + result.StatusCode.ToString());
}
else if (Tasks.Any(b => b.TaskId == task.TaskId))
{
var result = await client.PutToServiceAsync("Tasks/" +task.TaskId, task);
MessageBox.Show("EDIT" + result.StatusCode.ToString());
}
else
{
var result = await client.PostToServiceAsync("Tasks" , task);
MessageBox.Show("ADD" + result.StatusCode.ToString());
}
await GetTasks();
}