protected void btn_reply_Click(object sender, EventArgs e)
        {
            if (TextBox1.Text.Equals(""))
            {
                HttpContext.Current.Response.Write("<script>alert('Your message can not be empty')</script>");
            }
            else
            {
                if (Session["loginData"] != null)
                {
                    user = (User)Session["loginData"];

                    Forum f = new Forum();
                    f.CategoryID = catID;
                    f.PostID     = postID;
                    f.Text       = TextBox1.Text;
                    f.UserID     = user.Id;
                    f.Date       = DateTime.Now;

                    DBconnection.addForumMessage(f);

                    Response.Redirect(Request.RawUrl);
                }
                else
                {
                    HttpContext.Current.Response.Write("<script>alert('You must be logged in, in order to post messages on forum.')</script>");
                }
            }
        }
        protected void btn_add_Click(object sender, EventArgs e)
        {
            //create a new Forum objet, then pass it as a parameter in order to add post title to the database
            Forum post = new Forum(catID, TextBox1.Text, DateTime.Now, user.Id);

            DBconnection.addForumNewPost(post);

            post.Text   = TextBox2.Text;
            post.PostID = DBconnection.lastPK("ID", "ForumPosts");

            //add the message assosiated with this post
            DBconnection.addForumMessage(post);

            HttpContext.Current.Response.Write("<script>alert('Your post has been added')</script>");

            //redirect the user to his message
            Response.Redirect("ForumMessages.aspx?catID=" + post.CategoryID + "&postID=" + post.PostID);
        }