public bool AddSpending(string category, decimal amount)
{
if (category == null || category.Length == 0 || amount <= 0)
{
return(false);
}
int categoryID = GetCategoryID(category);
if (categoryID < 0)
{
return(false);
}
Spending spending = GetSpending(categoryID);
if (spending != null)
{
spending.IncreaseAmount(amount);
balance.Amount -= amount;
return(true);
}
int id = spendings.Count;
spendings.Add(new Spending(id, categoryID, amount));
balance.Amount -= amount;
return(true);
}
private Spending GetSpending(int categoryID)
{
Spending spending = null;
foreach (Spending s in spendings)
{
if (s.CategoryID == categoryID && s.Date.Equals(DateTime.Today))
{
spending = s;
break;
}
}
return(spending);
}
public decimal ShowSpendingsInCategoryByInterval(string category, DateTime start, DateTime end)
{
if (category == null || category.Length == 0)
{
return(0);
}
Spending spending = null;
int catID = GetCategoryID(category);
foreach (Spending s in spendings)
{
if (s.CategoryID == catID && s.Date.CompareTo(start) >= 0 && s.Date.CompareTo(end) <= 0)
{
spending = s;
break;
}
}
return(spending == null ? 0 : spending.Amount);
}