public IActionResult DeleteCourse(string id, int courseId)
{
ViewData["Id"] = id;
//deleting all presentations
Course course = repository.Courses
.FirstOrDefault(c => c.CourseId == courseId);
while (course.Presentations.Count() > 0)
{
Presentation p = course.Presentations.FirstOrDefault();
Presentation deletedP = repository.DeletePresentation(p.PresentationId);
}
Course deletedCourse = repository.DeleteCourse(courseId);
if (deletedCourse != null)
{
TempData["messageIn"] = $"Course: '{deletedCourse.Title}' has been deleted!";
}
return(RedirectToAction("Index", new{ id, status = "Private",
sort = "Title", order = "asc" }));
}