protected void Page_Load(object sender, EventArgs e) { if (!Page.IsPostBack) { //驗證身份 Person myPerson = new Person(); if (myPerson.Role == Person.LoginRole.Administrator || myPerson.Role == Person.LoginRole.SchoolAdmin || myPerson.Role == Person.LoginRole.Student || myPerson.Role == Person.LoginRole.Parent) { Response.Redirect("~/Default.aspx"); } DataLayer dl = new DataLayer(); DataTable dtCourseByGrade = dl.GetTeacherCourseByGradeID(Request["grade_id"]); ViewState["CourseByGrade"] = dtCourseByGrade; Show(); } }