//add comment
        public void POST(forum_comment foracomment)
        {
            using (ThyroidDataEntities entities = new ThyroidDataEntities())
            {
                entities.forum_comment.Add(foracomment);

                entities.SaveChanges();
            }
        }
 //delete comment by comment id
 public string Delete(int id)
 {
     using (ThyroidDataEntities entities = new ThyroidDataEntities())
     {
         forum_comment commentid = entities.forum_comment.Find(id);
         entities.forum_comment.Remove(commentid);
         entities.SaveChanges();
         return("Comment Deleted Successfully");
     }
 }
        //update comment via comment id
        public void PUT(int id, forum_comment forumcomment)
        {
            using (ThyroidDataEntities entities = new ThyroidDataEntities())
            {
                var fcomment = entities.forum_comment.Find(id);
                fcomment.comment   = forumcomment.comment;
                fcomment.timestamp = forumcomment.timestamp;
                fcomment.username  = forumcomment.username;

                entities.Entry(fcomment).State = System.Data.Entity.EntityState.Modified;
                entities.SaveChanges();
            }
        }