FlyTeam/SkyTeam/verfuegbareFluge.xaml.cs

using System;
using System.Data;
using System.Windows;
using System.Windows.Controls;
using MySql.Data.MySqlClient;

namespace SkyTeam
{
    public partial class verfuegbareFluge : Page
    {
        public verfuegbareFluge()
        {
            InitializeComponent();
            LoadFlights();
        }

        private void LoadFlights()
        {
            string query = @"SELECT f.Id, f.Flugnummer, f.Abflugort AS 'From', f.Zielort AS 'To', 
                             z.Modell AS Plane, f.Abflugdatum AS Date
                             FROM fluege f
                             JOIN flugzeuge z ON f.FlugzeugId = z.Id";

            using (MySqlConnection conn = new MySqlConnection(DatenbankServices.GetConnection()))
            {
                conn.Open();
                MySqlDataAdapter adapter = new MySqlDataAdapter(query, conn);
                DataTable dt = new DataTable();
                adapter.Fill(dt);
                AvailableFlightsDataGrid.ItemsSource = dt.DefaultView;
            }
        }

        private void BookFlight_Click(object sender, RoutedEventArgs e)
        {
            if (AvailableFlightsDataGrid.SelectedItem == null)
            {
                MessageBox.Show("Bitte wählen Sie einen Flug aus!");
                return;
            }

            DataRowView row = (DataRowView)AvailableFlightsDataGrid.SelectedItem;
            int flightId = Convert.ToInt32(row["Id"]);

            string query = "INSERT INTO buchungen (UserId, FlugId) VALUES (@uid, @fid)";

            try
            {
                using (MySqlConnection conn = new MySqlConnection(DatenbankServices.GetConnection()))
                {
                    conn.Open();
                    MySqlCommand cmd = new MySqlCommand(query, conn);
                    cmd.Parameters.AddWithValue("@uid",SessionManager.CurrentUserId);
                    cmd.Parameters.AddWithValue("@fid", flightId);
                    cmd.ExecuteNonQuery();
                }

                MessageBox.Show("Erfolgreich gebucht!");
                ((MainWindow)Application.Current.MainWindow).MainFrame.Navigate(new BuchungenPage());
            }
            catch (Exception ex)
            {
                MessageBox.Show("Fehler: " + ex.Message);
            }
        }

        private void HomeButton_Click(object sender, RoutedEventArgs e) => NavigationService.Navigate(new NavigationPage());
        private void BookingsButton_Click(object sender, RoutedEventArgs e) => NavigationService.Navigate(new BuchungenPage());
        private void SettingsButton_Click(object sender, RoutedEventArgs e) => NavigationService.Navigate(new SettingsPage());
        private void LogoutButton_Click(object sender, RoutedEventArgs e) => NavigationService.Navigate(new LogInPage());
    }
}