protected override void OnNavigatedTo(NavigationEventArgs e)
{
RegularStorage dbcontacts = new RegularStorage();
RegularsVM regularsVM = dbcontacts.GetRegulars(); //Get regulars
// set data (ad execute bindings)
this.DataContext = regularsVM;
}
// create (generate, load, calculate) RegularsVM for the current global regular incomes/expenses
public RegularsVM GetRegulars()
{
try
{
using (SQLite.Net.SQLiteConnection conn = new SQLite.Net.SQLiteConnection(new SQLite.Net.Platform.WinRT.SQLitePlatformWinRT(), App.DB_PATH))
{
// 1) request SQL table data
// RegularItem = model
var regulars = conn.Table <RegularItem>().OrderBy(o => o.Amount); // of type TableQuery<T>, BaseTableQuery, IEnumerable<T>, IEnumerable
// 2) process each record
float totalIncome = 0;
float totalExpense = 0;
RegularsVM regularsVM = new RegularsVM();
foreach (RegularItem r in regulars)
{
int amount = r.Amount;
if (amount > 0)
{
// positive = income
RegularItemVM regularItemVM = new RegularItemVM(r.Id, r.Name, amount, r.Period);
totalIncome += regularItemVM.GetDaily();
regularsVM.AddIncome(regularItemVM);
}
else
{
// negative = expense
amount = -amount; // use absolute value
RegularItemVM regularItemVM = new RegularItemVM(r.Id, r.Name, amount, r.Period);
totalExpense += regularItemVM.GetDaily();
regularsVM.AddExpense(regularItemVM);
}
}
// 3) fill total values
regularsVM.SetTotalIncomeAndExpense((int)Math.Truncate(totalIncome * 100.0f), (int)Math.Truncate(totalExpense * 100.0f));
// 4) return output VM
return(regularsVM);
}
}
catch
{
return(null);
}
}
public RegularStorage()
{
// calculate income per day
using (SQLite.Net.SQLiteConnection conn = new SQLite.Net.SQLiteConnection(new SQLite.Net.Platform.WinRT.SQLitePlatformWinRT(), App.DB_PATH))
{
// 1) request SQL table data
// RegularItem = model
var regulars = conn.Table <RegularItem>().OrderBy(o => o.Amount); // of type TableQuery<T>, BaseTableQuery, IEnumerable<T>, IEnumerable
// 2) process each record
float totalIncome = 0;
float totalExpense = 0;
RegularsVM regularsVM = new RegularsVM();
foreach (RegularItem r in regulars)
{
int amount = r.Amount;
if (amount > 0)
{
// positive = income
RegularItemVM regularItemVM = new RegularItemVM(r.Id, r.Name, amount, r.Period);
totalIncome += regularItemVM.GetDaily();
}
else
{
// negative = expense
amount = -amount; // use absolute value
RegularItemVM regularItemVM = new RegularItemVM(r.Id, r.Name, amount, r.Period);
totalExpense += regularItemVM.GetDaily();
}
}
RegularIncomePerDay = (int)Math.Truncate(totalIncome * 100.0f) - (int)Math.Truncate(totalExpense * 100.0f);
}
}