Complete C# Code for BannerRotator Control

Code below is a complete C# code for BannerRotator, web server control inherited from AdRotator ASP.NET control.

using System;
using System.Globalization;
using System.Collections.Generic;
using System.ComponentModel;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace Sotirovic.Web.UI.UIControls.Banners
{
    [DefaultProperty(“AdvertisementFile”)]
    [ToolboxData(“<{0}:BannerRotator runat=server></{0}:BannerRotator>”)]
    public class BannerRotator : System.Web.UI.WebControls.AdRotator
    {
        #region Constants

        private const string wmodeDefault = “opaque”;

        #endregion

        #region Fields

        private AdCreatedEventArgs selectedAdvertArgs;
        private string widthKeyPropertyName = “Width”;
        private string heightKeyPropertyName = “Height”;
        private string flashFileExtension = “.swf”;
        private bool? isFlashBanner = null;
        private string navigateUrlBase = null;
        private string wmode = wmodeDefault;

        #endregion

        #region Properties

        [Browsable(true), Category(“Behavior”), DefaultValue(“”)]
        public string NavigateUrlBase
        {
            get { return navigateUrlBase; }
            set { navigateUrlBase = value; }
        }

        protected bool IsFlashBanner
        {
            get
            {
                if (isFlashBanner != null) { return (bool)isFlashBanner; }

                isFlashBanner = false;

                if (selectedAdvertArgs == null) { return (bool)isFlashBanner; }

                if (selectedAdvertArgs.ImageUrl == null) { return (bool)isFlashBanner; }

                if (selectedAdvertArgs.ImageUrl.EndsWith(flashFileExtension, true, CultureInfo.InvariantCulture))
                {
                    isFlashBanner = true;
                    return true;
                }

                return (bool)isFlashBanner;
            }
        }

        [Browsable(true), Category(“Behavior”), DefaultValue(wmodeDefault)]
        public string WMode
        {
            get { return wmode; }
            set { wmode = value; }
        }

        #endregion

        protected override void Render(HtmlTextWriter writer)
        {
            if (base.DesignMode)
            {
                base.Render(writer);
                return;
            }

            if (IsFlashBanner)
            {
                RenderFlashBanner(writer);
                return;
            }

            base.Render(writer);
        }

        protected override void OnAdCreated(AdCreatedEventArgs e)
        {
            base.OnAdCreated(e);
            selectedAdvertArgs = e;
            ResolveTrackingUrl();
        }

        private void ResolveTrackingUrl()
        {
            if (String.IsNullOrEmpty(navigateUrlBase)) { return; }

            if (selectedAdvertArgs == null) { return; }

            if (String.IsNullOrEmpty(selectedAdvertArgs.NavigateUrl)) { return; }

            if (IsFlashBanner) { return; }

            selectedAdvertArgs.NavigateUrl = String.Format(navigateUrlBase, HttpContext.Current.Server.UrlEncode(selectedAdvertArgs.NavigateUrl));
        }

        private void RenderFlashBanner(HtmlTextWriter writer)
        {
            if (selectedAdvertArgs == null) { return; }

            if (String.IsNullOrEmpty(selectedAdvertArgs.ImageUrl)) { return; }

            FlashControl flash = new FlashControl();
            flash.FlashUrl = selectedAdvertArgs.ImageUrl;

            if (!String.IsNullOrEmpty(wmode))
            {
                flash.WMode = wmode;
            }

            if (!String.IsNullOrEmpty(this.ID))
            {
                flash.ID = this.ClientID;
            }

            if (!this.Enabled)
            {
                flash.Enabled = false;
            }

            if (!SetDimensions(flash))
            {
                flash.Width = this.Width;
                flash.Height = this.Height;
            }

            flash.RenderControl(writer);
        }

        private bool SetDimensions(FlashControl flash)
        {
            if (selectedAdvertArgs.AdProperties == null) { return false; }

            string widthProperty = (string)selectedAdvertArgs.AdProperties[widthKeyPropertyName];
            string heightProperty = (string)selectedAdvertArgs.AdProperties[heightKeyPropertyName];

            int width;
            int height;

            if (!int.TryParse(widthProperty, out width)) { return false; }
            if (!int.TryParse(heightProperty, out height)) { return false; }

            flash.Width = Math.Abs(width);
            flash.Height = Math.Abs(height);

            return true;
        }

    }
}

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