private void btnMonth_Click(object sender, EventArgs e)
{
string Date = monthprofit.SelectionRange.Start.ToString("yyyy-MM");
dataIncome.ClearSelection();
dataExpense.ClearSelection();
dataProfitability.ClearSelection();
dataIncome.DataSource = incoming.GetIncomeListMonth(Date);
dataExpense.DataSource = incoming.GetExpenseListMonth(Date);
dataProfitability.DataSource = incoming.GetProfitListMonth(Date);
}
