private void LoadTeacherList()//教师表数据源、院系号数据源
{
TeacherBLL teacherBLL = new TeacherBLL();
TeacherList.DataSource = teacherBLL.GetList();
DepartmentBLL departmentBLL = new DepartmentBLL();
DeptnoT.DataSource = departmentBLL.GetAllDeptno();
}