public ActionResult EditCourse(int id, EditCourseViewModel model)
        {
            if (!ModelState.IsValid)
            {
                return(View(model));
            }
            var course = CourseServiceCaller.Get(id);

            if (!String.IsNullOrEmpty(model.CourseName))
            {
                course.Name = model.CourseName;
            }
            if (!String.IsNullOrEmpty(model.CourseProfessor))
            {
                course.Professor = model.CourseProfessor;
            }
            if (!String.IsNullOrEmpty(model.CourseHour.ToString()))
            {
                course.Hour = model.CourseHour ?? 0;
            }
            if (!model.CourseDay.Equals("Default"))
            {
                course.Day = GetWeekDayFromString(model.CourseDay);
            }
            try
            {
                CourseServiceCaller.Update(course);
                return(RedirectToAction("Index", "Course"));
            }
            catch (Exception ex)
            {
                return(View(ex.Message));
            }
        }
        public ActionResult EditCourse(int id)
        {
            ViewBag.CourseId = id;
            var course      = CourseServiceCaller.Get(id);
            var courseModel = new EditCourseViewModel()
            {
                CourseDay       = course.Day.ToString(),
                CourseHour      = course.Hour,
                CourseName      = course.Name,
                CourseProfessor = course.Professor
            };

            return(View(courseModel));
        }
        public ActionResult Delete(int id)
        {
            CourseServiceCaller.Delete(id);

            return(RedirectToAction("Index"));
        }