private void deleteButton_Click(object sender, EventArgs e) { if (dataGridView.SelectedCells.Count > 0) { int selectedrowindex = dataGridView.SelectedCells[0].RowIndex; DataGridViewRow selectedRow = dataGridView.Rows[selectedrowindex]; Id = int.Parse(Convert.ToString(selectedRow.Cells["Id"].Value)); if (MessageBox.Show(String.Format("Are you sure to delete a trip on {0}?", Convert.ToString(selectedRow.Cells["DateStart"].Value)), "Deleting...", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes) { TripBl tripBl = new TripBl(); tripBl.Delete(Id); Id = 0; RefreshGrid(); NewDriverCompobox(); } } }