/// <summary>
/// 绑定数据源
/// </summary>
private void bind()
{
User user = Session["User"] as User;
TeacherBLL teacherBLL = new TeacherBLL();
Teacher teacher = teacherBLL.getByUserId(user.Id);
CommonBLL commBLL = new CommonBLL();
GridView1.DataSource = commBLL.getClassesByTeacherId(teacher.Id);
GridView1.DataBind();
}
