private void LoadAllPublisher()
        {
            List <Publisher> publishers = publisherManager.GetAllPublishers();

            publisherGridView.DataSource = publishers;
            publisherGridView.DataBind();
        }
        public void LoadAllPublisher()
        {
            PublisherManager publisherManager = new PublisherManager();

            publisherDropDownList.DataSource     = publisherManager.GetAllPublishers();
            publisherDropDownList.DataTextField  = "PublisherName";
            publisherDropDownList.DataValueField = "PublisherId";

            publisherDropDownList.DataBind();
            publisherDropDownList.Items.Insert(0, new ListItem("Select", "Select"));
        }