DevConnections Presentation Orlando, How To Make Your Browser fly

(About 100 People)

The Presentation was broken down into three parts.

Part 1

Created a windows razor project that cached in image on a web site using best practices for threading and locking. The code and project to do this are below:

var downloadByteArray = HttpContext.Current.Cache[cacheName] as byte[];
 if (downloadByteArray == null)
 {
     // make sure multiple requestors are not filling up the cache
     lock (LockVal)
     {
         downloadByteArray = HttpContext.Current.Cache[cacheName] as byte[];
         if (downloadByteArray == null)
         {
             Thread.Sleep(sleep * 1000);

             string imageLocation = HttpContext.Current.Server.MapPath("~") + imageUrl;

             downloadByteArray = File.ReadAllBytes(imageLocation);
             if (cacheExpiresSeconds > 0)
             {
                 HttpContext.Current.Cache.Insert(cacheName, downloadByteArray,
                                                  null,
                                                  DateTime.Now.Add(new TimeSpan(0, 0, 0, cacheExpiresSeconds)),
                                                  TimeSpan.Zero, CacheItemPriority.NotRemovable, null);
                 CacheInsertCounter = 9999; // any touch of this increments the global counter
             }
         }
     }
 }

WebFormsPreSprite.zip

Part 2

Tips from Steve Souders

Part 3

Sprite Library from Microsoft Example:

WebFormsPreSprite.zip