private void tabControl2_SelectedIndexChanged(object sender, EventArgs e) { if (tabControl2.SelectedIndex == 0)//наименование { WorkWithDB.NaimDocVivod(); SprNameDocGrid.DataSource = WorkWithDB.VivodNaimDocVivod; } if (tabControl2.SelectedIndex == 1)//префиксы { WorkWithDB.SprPrefVivod1(); SprPrefDocGrid.DataSource = WorkWithDB.VivodPrefDocVivod1; } if (tabControl2.SelectedIndex == 2) { WorkWithDB.DistrictVivod(); DistrictGrid.DataSource = WorkWithDB.VivodDistrict; WorkWithDB.CityVivod(); CityGrid.DataSource = WorkWithDB.VivodCity; } }