public IActionResult AddCourseEnrollment(int crsId, int stdId)
{
if (_db.GetStudentById(stdId) == null && _db.GetCourseById(crsId) == null)
{
NotFound("Check Your Data");
}
else
{
Course EnrolledCourse = _db.AddCourseEnrollment(crsId, stdId);
return(Ok(EnrolledCourse));
}
return(BadRequest());
}