Dnn.Modules.Vendors.Components.BannerController.LoadBanners C# (CSharp) 메소드

        public ArrayList LoadBanners(int PortalId, int ModuleId, int BannerTypeId, string GroupName, int Banners)
        {
            if (GroupName == null)
            {
                GroupName = Null.NullString;
            }
			
            //set cache key
            string cacheKey = string.Format(DataCache.BannersCacheKey, PortalId, BannerTypeId, GroupName);

            //get list of active banners
            var bannersList = CBO.GetCachedObject<List<BannerInfo>>(new CacheItemArgs(cacheKey, DataCache.BannersCacheTimeOut, DataCache.BannersCachePriority, PortalId, BannerTypeId, GroupName),
                                                                    LoadBannersCallback);
																	
            //create return collection
            var arReturnBanners = new ArrayList(Banners);

            if (bannersList.Count > 0)
            {
                if (Banners > bannersList.Count)
                {
                    Banners = bannersList.Count;
                }
				
                //set Random start index based on the list of banners
                int intIndex = new Random().Next(0, bannersList.Count);
                //set counter
                int intCounter = 1;

                while (intCounter <= bannersList.Count && arReturnBanners.Count != Banners)
                {
					//manage the rotation for the circular collection
                    intIndex += 1;
                    if (intIndex > (bannersList.Count - 1))
                    {
                        intIndex = 0;
                    }
					
                    //get the banner object
                    BannerInfo objBanner = bannersList[intIndex];

                    //add to return collection
                    arReturnBanners.Add(objBanner);

                    //update banner attributes
                    objBanner.Views += 1;
                    if (Null.IsNull(objBanner.StartDate))
                    {
                        objBanner.StartDate = DateTime.Now;
                    }
                    if (Null.IsNull(objBanner.EndDate) && objBanner.Views >= objBanner.Impressions && objBanner.Impressions != 0)
                    {
                        objBanner.EndDate = DateTime.Now;
                    }
                    _dataService.UpdateBannerViews(objBanner.BannerId, objBanner.StartDate, objBanner.EndDate);

                    //expire cached collection of banners if a banner is no longer active
                    if (!IsBannerActive(objBanner))
                    {
                        DataCache.RemoveCache(cacheKey);
                    }
                    intCounter += 1;
                }
            }
            return arReturnBanners;
        }

        /// <summary>
        /// The Page_Load event handler on this User Control is used to
        /// obtain a DataReader of banner information from the Banners
        /// table, and then databind the results to a templated DataList
        /// server control.  It uses the DotNetNuke.BannerDB()
        /// data component to encapsulate all data functionality.
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        /// <remarks></remarks>
        protected override void OnLoad(EventArgs e)
        {
            base.OnLoad(e);

            //exit without displaying banners to crawlers
			if (Request.Browser.Crawler)
            {
                return;
            }
            try
            {
                int intPortalId = 0;
                int intBannerTypeId = 0;
                string strBannerGroup;
                int intBanners = 0;

                //banner parameters
                switch (Convert.ToString(Settings["bannersource"]))
                {
                    case "L": //local
                    case "":
                        intPortalId = PortalId;
                        break;
                    case "G": //global
                        intPortalId = Null.NullInteger;
                        break;
                }
                if (!String.IsNullOrEmpty(Convert.ToString(Settings["bannertype"])))
                {
                    intBannerTypeId = Int32.Parse(Convert.ToString(Settings["bannertype"]));
                }
                strBannerGroup = Convert.ToString(Settings["bannergroup"]);
                if (!String.IsNullOrEmpty(Convert.ToString(Settings["bannercount"])))
                {
                    intBanners = Int32.Parse(Convert.ToString(Settings["bannercount"]));
                }
                if (!String.IsNullOrEmpty(Convert.ToString(Settings["padding"])))
                {
                    lstBanners.CellPadding = Int32.Parse(Convert.ToString(Settings["padding"]));
                }
				
                //load banners
                if (intBanners != 0)
                {
                    var objBanners = new BannerController();
                    lstBanners.DataSource = objBanners.LoadBanners(intPortalId, ModuleId, intBannerTypeId, strBannerGroup, intBanners);
                    lstBanners.DataBind();
                }
				
                //set banner display characteristics
                if (lstBanners.Items.Count != 0)
                {
					//container attributes
                    lstBanners.RepeatLayout = RepeatLayout.Table;
                    if (!String.IsNullOrEmpty(Convert.ToString(Settings["orientation"])))
                    {
                        switch (Convert.ToString(Settings["orientation"]))
                        {
                            case "H":
                                lstBanners.RepeatDirection = RepeatDirection.Horizontal;
                                break;
                            case "V":
                                lstBanners.RepeatDirection = RepeatDirection.Vertical;
                                break;
                        }
                    }
                    else
                    {
                        lstBanners.RepeatDirection = RepeatDirection.Vertical;
                    }
                    if (!String.IsNullOrEmpty(Convert.ToString(Settings["border"])))
                    {
                        lstBanners.ItemStyle.BorderWidth = Unit.Parse(Convert.ToString(Settings["border"]) + "px");
                    }
                    if (!String.IsNullOrEmpty(Convert.ToString(Settings["bordercolor"])))
                    {
                        var objColorConverter = new ColorConverter();
                        lstBanners.ItemStyle.BorderColor = (Color) objColorConverter.ConvertFrom(Convert.ToString(Settings["bordercolor"]));
                    }
					
                    //item attributes
                    if (!String.IsNullOrEmpty(Convert.ToString(Settings["rowheight"])))
                    {
                        lstBanners.ItemStyle.Height = Unit.Parse(Convert.ToString(Settings["rowheight"]) + "px");
                    }
                    if (!String.IsNullOrEmpty(Convert.ToString(Settings["colwidth"])))
                    {
                        lstBanners.ItemStyle.Width = Unit.Parse(Convert.ToString(Settings["colwidth"]) + "px");
                    }
                }
                else
                {
                    lstBanners.Visible = false;
                }
            }
            catch (Exception exc) //Module failed to load
            {
                Exceptions.ProcessModuleLoadException(this, exc);
            }
        }