public ActionResult Edit(int?id)
{
if (id == null)
{
return(new HttpStatusCodeResult(HttpStatusCode.BadRequest));
}
CourseDate lesson = lessonB.FindLesson(id);
if (lesson == null)
{
return(HttpNotFound());
}
PopulateCourseDropDownList(lesson.CourseDateID);
return(View(lesson));
}