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    <p>While doing this on a website is not ideal or recommended..it is possible, given that the site is <strong>always running.</strong></p> <p>Here's a sample: I'm creating a Cache item in the global.asax with an expiration. When it expires, an event is fired. You can run your reports or whatever in the OnRemove() event.</p> <p>Then you can set a call to a page(preferably a very small one) that will trigger code in the Application_BeginRequest that will add back the Cache item with an expiration.</p> <p>global.asax</p> <pre><code> private const string VendorNotificationCacheKey = "VendorNotification"; protected void Application_Start(object sender, EventArgs e) { //Set value in cache with expiration time CacheItemRemovedCallback callback = OnRemove; //Expire after 15 minutes Context.Cache.Add(VendorNotificationCacheKey, DateTime.Now, null, DateTime.Now.AddMinutes(15), TimeSpan.Zero, CacheItemPriority.Normal, callback); } private void OnRemove(string key, object value, CacheItemRemovedReason reason) { SendVendorNotification(); //Need Access to HTTPContext so cache can be re-added, so let's call a page. Application_BeginRequest will re-add the cache. var siteUrl = ConfigurationManager.AppSettings.Get("SiteUrl"); var client = new WebClient(); client.DownloadData(siteUrl + "default.aspx"); client.Dispose(); } private void SendVendorNotification() { //Do Tasks here } protected void Application_BeginRequest(object sender, EventArgs e) { //Re-add if it doesn't exist if (HttpContext.Current.Request.Url.ToString().ToLower().Contains("default.aspx") &amp;&amp; HttpContext.Current.Cache[VendorNotificationCacheKey] == null) { //ReAdd CacheItemRemovedCallback callback = OnRemove; Context.Cache.Add(VendorNotificationCacheKey, DateTime.Now, null, DateTime.Now.AddMinutes(15), TimeSpan.Zero, CacheItemPriority.Normal, callback); } } </code></pre> <p>This works well, if your scheduled task is quick. If it's a long running process..you definitely need to keep it <strong>out</strong> of your web app.</p> <p>I haven't had any problems or weird errors thrown with this method.</p>
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    1. POweb page as a scheduler?
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    1. COYou realize that the above example is entirely dependent on a request, right? There's nothing guaranteeing that a request will be made.
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      1. USJames Johnson
    2. COA valid approach if it meets the requirements http://blog.stackoverflow.com/2008/07/easy-background-tasks-in-aspnet/
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    3. COWell, the event not dependent on a request. As long as ONE request has started the 'Application', it will keep running in the background. Cache items can expire even if no one is on the site. The event will trigger.
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