public static decimal CashFlowAmountForMonth(this Budget budget, int year, int month)
{
var startDate = new DateTime(year, month, 1);
var endDate = startDate.AddMonths(1).AddDays(-1);
return(budget.DailyCashFlowsBetween(startDate, endDate)
.SelectMany(x => x)
.Sum(x => x.Amount));
}
public static decimal CashFlowAmountBetween(this Budget budget, DateTime startDate, DateTime endDate)
{
return(budget.DailyCashFlowsBetween(startDate, endDate)
.SelectMany(x => x)
.Sum(x => x.Amount));
}