/// <summary> /// 点击删除按钮 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> private void Button4_Click(object sender, EventArgs e) { Attendance model = new Attendance(); try { model.Id = Convert.ToInt32(textBox18.Text); if (AttendanceDAL.Drop(model, "id")) { LoadDataGridView(); } } catch (Exception ex) { MessageBox.Show("ID必须是数字"); } }