protected override void OnNavigatedTo(NavigationEventArgs e)
{
if (e.Parameter is Vehicle)
{
SelectedPurchase = null;
SelectedVehicle = e.Parameter as Vehicle;
CommandLabel.Text = "Add New Fuel Purchase For " + SelectedVehicle.Name;
}
else
{
//SelectedPurchase = e.Parameter as Purchase;
using (var db = new DbSchema())
{
int id = (int)e.Parameter;
SelectedPurchase = db.Purchases.Include(p => p.Vehicle).Single(p => p.ID == id);
}
SelectedVehicle = SelectedPurchase.Vehicle;
Date.Date = SelectedPurchase.Date;
Gallons.Text = SelectedPurchase.Gallons.ToString();
Cost.Text = SelectedPurchase.Cost.ToString();
Trip.Text = SelectedPurchase.Trip.ToString();
Odometer.Text = SelectedPurchase.Odometer.ToString();
CommandLabel.Text = "Edit Purchase For " + SelectedVehicle.Name + " On " + SelectedPurchase.Date.ToString();
}
base.OnNavigatedTo(e);
}
private List <Purchase> GetPurchasesForVehicle(Vehicle veh)
{
List <Purchase> purchList;
using (var db = new DbSchema())
{
purchList = db.Purchases.Where(p => p.Vehicle == veh).ToList();
}
return(purchList);
}
/// <summary>
/// Initializes the singleton application object. This is the first line of authored code
/// executed, and as such is the logical equivalent of main() or WinMain().
/// </summary>
public App()
{
this.InitializeComponent();
this.Suspending += OnSuspending;
using (var db = new DbSchema())
{
db.Database.Migrate();
}
}
private void SaveButton_Click(object sender, RoutedEventArgs e)
{
using (var db = new DbSchema())
{
if (SelectedPurchase == null)
{
DateTimeOffset tempDate = (DateTimeOffset)Date.Date;
SelectedPurchase = new Purchase
{
Date = tempDate.Date,
Gallons = Convert.ToDecimal(Gallons.Text),
Cost = Convert.ToDecimal(Cost.Text),
Trip = Convert.ToDecimal(Trip.Text),
Odometer = Convert.ToInt32(Odometer.Text)
};
// This is required but I don't know why. If I try to do
// the Add directly on SelectedVehicle, the database doesn't
// get modified at all. It is as if the Vehicle objects in the
// list view are not the same as the Vehicle objects in the database;
// something is missing that allows the database code to function
// as expected.
Vehicle tgt = db.Vehicles.Include(v => v.Purchases).Single(v => v.ID == SelectedVehicle.ID);
// Vehicle tgt = db.Vehicles.Find(SelectedVehicle.ID);
//SelectedPurchase.Vehicle = tgt;
tgt.Purchases.Add(SelectedPurchase);
//db.Purchases.Add(SelectedPurchase);
}
else
{
// Grab the info.
DateTimeOffset tempDate = (DateTimeOffset)Date.Date;
SelectedPurchase.Date = tempDate.Date;
SelectedPurchase.Gallons = Convert.ToDecimal(Gallons.Text);
SelectedPurchase.Cost = Convert.ToDecimal(Cost.Text);
SelectedPurchase.Trip = Convert.ToDecimal(Trip.Text);
SelectedPurchase.Odometer = Convert.ToInt32(Odometer.Text);
// Mark the entry as having been modified.
// Note that it is not worth trying to figure out if the
// user really changed something or not.
db.Entry(SelectedPurchase).State = EntityState.Modified;
}
db.SaveChanges();
}
// Go back to the main page.
this.Frame.GoBack();
}
private void DeletePurchase_Click(object sender, RoutedEventArgs e)
{
Purchase item = (Purchase)Purchases.SelectedItem;
if (item != null)
{
using (var db = new DbSchema())
{
db.Purchases.Remove(item);
db.SaveChanges();
}
Purchases.ItemsSource = GetPurchaseSummariesForVehicle(Vehicles.SelectedItem as Vehicle);
}
}
private void Delete_Click(object sender, RoutedEventArgs e)
{
Vehicle veh = Vehicles.SelectedItem as Vehicle;
if (veh != null)
{
using (var db = new DbSchema())
{
db.Vehicles.Remove(veh);
db.SaveChanges();
Vehicles.ItemsSource = db.Vehicles.ToList();
}
Vehicles.SelectedIndex = -1;
}
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
System.Diagnostics.Debug.WriteLine("Enter: OnNavigatedTo");
using (var db = new DbSchema())
{
// Show list of all vehicles
Vehicles.ItemsSource = db.Vehicles.ToList();
// Show purchases for selected vehicle, if there is one
if (CurrentVehicleIndex != -1)
{
Vehicles.SelectedIndex = CurrentVehicleIndex;
}
}
base.OnNavigatedTo(e);
}
private void SaveButton_Click(object sender, RoutedEventArgs e)
{
using (var db = new DbSchema())
{
if (SelectedVehicle == null)
{
SelectedVehicle = new Vehicle
{
Name = VehicleName.Text,
Year = Convert.ToInt32(VehicleYear.Text),
Make = VehicleMake.Text,
Model = VehicleModel.Text,
StartingMileage = Convert.ToInt32(StartingMileage.Text)
};
db.Vehicles.Add(SelectedVehicle);
}
else
{
// Grab the info.
SelectedVehicle.Name = VehicleName.Text;
SelectedVehicle.Year = Convert.ToInt32(VehicleYear.Text);
SelectedVehicle.Make = VehicleMake.Text;
SelectedVehicle.Model = VehicleModel.Text;
SelectedVehicle.StartingMileage = Convert.ToInt32(StartingMileage.Text);
// Mark the entry as having been modified.
// Note that it is not worth trying to figure out if the
// user really changed something or not.
db.Entry(SelectedVehicle).State = EntityState.Modified;
}
db.SaveChanges();
}
// Go back to the main page.
this.Frame.GoBack();
}
private void Vehicles_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
System.Diagnostics.Debug.WriteLine("Enter: Vehicles_SelectionChanged");
CurrentVehicleIndex = Vehicles.SelectedIndex;
if (CurrentVehicleIndex == -1)
{
HeaderText.Text = "";
NumPurchases.Text = "";
Purchases.ItemsSource = null;
}
else
{
using (var db = new DbSchema())
{
NumPurchasesGlobal.Text = "Global purchases: " + db.Purchases.Count().ToString();
}
Vehicle selVehicle = Vehicles.SelectedItem as Vehicle;
HeaderText.Text = "Purchases For " + selVehicle.Name;
NumPurchases.Text = "This vehicle has " + selVehicle.Purchases.Count.ToString() + " fuel purchases";
PurchasesVm.SetNewList(GetPurchaseSummariesForVehicle(selVehicle));
}
}
private List <PurchaseSummary> GetPurchaseSummariesForVehicle(Vehicle veh)
{
List <Purchase> rawPurchases;
using (var db = new DbSchema())
{
rawPurchases = db.Purchases.Where(p => p.Vehicle == veh).ToList();
}
List <PurchaseSummary> purchList = new List <PurchaseSummary>();
foreach (var rp in rawPurchases)
{
PurchaseSummary newPurch = new PurchaseSummary();
newPurch.Date = rp.Date.ToString("yyyy-MM-dd");
newPurch.Gallons = rp.Gallons.ToString("F3");
newPurch.Cost = rp.Cost.ToString("C");
newPurch.Mpg = Math.Round(rp.Trip / rp.Gallons, 1).ToString("F1");
newPurch.Dpg = Math.Round(rp.Cost / rp.Gallons, 2).ToString("C");
newPurch.Id = rp.ID;
purchList.Add(newPurch);
}
return(purchList);
}