private void btnTable_Click(object sender, EventArgs e) { DataGrid1.DataSource = null; DataGrid1.Rows.Clear(); DataGrid1.Refresh(); DataTable table = new DataTable(); if (periodOfView == "Yearly") { table = data.GetProfit(displayMode); } else // periodOfView = Monthly { if (cmbYear.SelectedIndex != 0) { table = data.GetProfit(displayMode, Convert.ToInt32(cmbYear.SelectedItem)); } } DataGrid1.DataSource = table; DataGrid1.Visible = true; DataGrid1.BringToFront(); }