private void buttonDeleteList_Click(object sender, EventArgs e) { try { var result = MessageBox.Show("Are you sure ?", "Confirmation", MessageBoxButtons.OKCancel); if (result == DialogResult.OK) { connectionDB.deleteList(comboBoxList.Text); // Use method to delete the list from database MessageBox.Show("List deleted successfully"); } ViewList_Load(null, null); } catch { MessageBox.Show("ERROR : can't update the database", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error); } }