private void btnOut_Click(object sender, EventArgs e) { if (string.IsNullOrEmpty(_delete_stuNo)) { MessageBox.Show("请选择要搬出的同学"); return; } var deleteStudent = _testBLL.GetStudentByStuNo(_delete_stuNo); //搬出处理 if (_testBLL.OutRoom(deleteStudent.ID, _select_Room.ID)) { MessageBox.Show(_delete_stuNo + "搬出" + _select_RoomName + "成功"); this.lbRoom_Click(null, null); lbStu.DataSource = _testBLL.GetAllStudents().Select(x => x.StuNo).ToList(); lbStu.SelectedIndex = -1; _delete_stuNo = ""; } else { MessageBox.Show(_delete_stuNo + "搬出" + _select_RoomName + "成功"); } }