private void OnExpenseUpdated(ExpenseDetailViewModel source, Expense expense)
{
var ExpenseInList = Expenses.Single(c => c.Id == expense.Id);
ExpenseInList.Description = expense.Description;
ExpenseInList.Amount = expense.Amount;
ExpenseInList.PostDate = expense.PostDate;
ExpenseInList.Id = expense.Id;
ExpenseInList.UserId = expense.UserId;
}
private void OnExpenseAdded(ExpenseDetailViewModel source, Expense expense)
{
Expenses.Add(new ExpenseViewModel(expense));
}