//新增课程
 private void button14_Click(object sender, EventArgs e)
 {
     FmAddCourse fmAddCourse = new FmAddCourse();
     fmAddCourse.ShowDialog();
 }
 //新增课程
 private void button2_Click(object sender, EventArgs e)
 {
     int tid = new TeacherBusiness().getTidByUid(this.userModel.Uid);
     FmAddCourse fmAddCourse = new FmAddCourse(tid);
     fmAddCourse.ShowDialog();
 }