private void deleteTheCourseFromLibrary(string courseId)
        {
            AttandanceLibrary lib = libHall.libraryRef;

            if (lib.containsCourse(courseId))
            {
                Model.Course course = lib[courseId];
                lib.removeCourse(course);
                GlobalStation.shareInstance.librarySave(null, delegate() {
                    lib.addCourse(course);
                });
                libHall.contentInit();
            }
        }
        private void modifyInfo()
        {
            AttandanceLibrary lib = libHall.libraryRef;

            lib.name     = nameTextBox.text;
            lib.password = pswBox.text;
            if (!Helper.IsNullOrWhiteSpace(remarkBox.text))
            {
                lib.remarks = remarkBox.text;
            }
            else
            {
                lib.remarks = "作者什么都没留下";
            }
            GlobalStation.shareInstance.librarySave(delegate() {
                libHall.contentInit();
            }, null);
            Close();
        }