September 2009

DNN Bulk Email Solutions

We have release an update to our DNN Email Solution. Bulk Emailer – Advanced DNN Email Bulk Emailer is the most advanced fully featured email manager module for DotNetNuke. Use Bulk Emailer to deliver rich personalised and dynamic content to DNN users, custom lists, and integrated CRM contacts. Establish advanced auto responding campaigns, with automatic follow up email messages to people who click a link in a previous email. Provide Opt-in with previous email message catch-up running at a spaced interval, allowing you to provide a consistent communication service to your customers or members. Bulk Emailer is packed full of features that make it the clear leader in the DNN Email Marketing Modules.

DotNetNuke (DNN) Analytics Report Module

Google Analytics Report Module allows you to display your Google Analytics Graphs in a custom module on your DNN website. This allows you to use the Google Analytics free service with your clients websites, and deliver the results directly to the client without them leaving the DNN platform. This effectively replaces the DNN site log data with a neat flash colour grap of the Analytics Report data.  More Details at:

Silverlight 3.0 OOB doesn't auto update in my DotNetNuke Module

While developing Silverlight Video Library our next up coming DotNetNuke Module, the out of browser (OOB) experience Silverlight 3.0 brings is very compelling. But we ran in to a snag when testing the auto updating feature. Turns out this auto updating feature isn’t so auto coming from beta to RTM. After some hunting around the new classes available in the framework the following thrown in your App.config.cs will ensure in its simplest way your OOB app will be auto updated. private void Application_Startup(object sender, StartupEventArgs e) { // check for new version if OOB if (Application.Current.IsRunningOutOfBrowser) { Application.Current.CheckAndDownloadUpdateAsync(); } } private void Application_Startup(object sender, StartupEventArgs e) {

DotNetNuke DNN Exception Details: System.Web.HttpException: Server cannot modify cookies after HTTP headers have been sent.

We had a client with this error in their DotNetNuke Website: Server Error in ‘/’ Application. ——————————————————————————– Server cannot modify cookies after HTTP headers have been sent. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Web.HttpException: Server cannot modify cookies after HTTP headers have been sent. Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.  Stack Trace: [HttpException (0x80004005): Server cannot modify cookies after HTTP headers have been sent.]    System.Web.HttpResponse.BeforeCookieCollectionChange() +8710212    System.Web.HttpCookieCollection.Add(HttpCookie cookie) +24    System.Web.Security.AnonymousIdentificationModule.OnEnter(Object source, EventArgs eventArgs) +1792    System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +68    System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75 For DNN the problem turned out to be in the… Read More »DotNetNuke DNN Exception Details: System.Web.HttpException: Server cannot modify cookies after HTTP headers have been sent.

Unlock other user's checked out files in TFS

Don’t you hate it? A developer is away on holiday the exact time you need to update some code in TFS only to find it checked out and locked by them. The other day while working on our unreleased DotNetNuke Module Easy Events – Event Calendar (example running here) this happened. Open up a Visual Studio command prompt and run the following (replacing items with your details): tf undo “$/PROJECTNAME/FOLDER/FILE.EXTENSION” /WORKSPACE:MYDEVBOXNAME;Domain\User /server:SERVERNAME /recursive

My Silverlight Image is not updating within my DNN Module

While working on our upcoming DotNetNuke Module Silverlight Video Library we came across an interesting thing where you would upload an image (replacing the image on the server if it existed already). This works well until we discovered Silverlight was caching the downloaded images. Uploading and replacing an image on the server did nothing as the original jpg was cached. A simple command on the bitmap object allows us to get around and effectively bypass the cached image: bitmap.CreateOptions = BitmapCreateOptions.IgnoreImageCache; Download this DotNetNuke module from our website at: and stay tuned for our new release.

Extract image bitmap from Media Element in DNN Modules with Silverlight 3.0

For our upcoming new release of our DotNetNuke Module Silverlight Video Library with silverlight 3, a feature which previously took more than a few third party dll’s and full trust just to extract a jpg from a wmv was a nightmare. Now with silverlight 3 comes WriteableBitMap! You will quickly fall in love with WriteableBitMap as in just 3 lines of code you can effectively take a screenshot of any UI element and make that the contents for an Image. See below: public WriteableBitmap GetBitmapFromItem(FrameworkElement ctl) { WriteableBitmap wb = new WriteableBitmap((int)ctl.ActualWidth, (int)ctl.ActualHeight); wb.Render(ctl, new TranslateTransform()); wb.Invalidate(); return wb; } Now just use that as the Source object for an image and presto. Since this works for all UI elements, suddenly image reflection becomes a step easier. You could even set a timer object to refresh this every few milliseconds so you get a reflection of video without the overhead of… Read More »Extract image bitmap from Media Element in DNN Modules with Silverlight 3.0

Our First InteractiveWebs Blog

This is the very first Blog we have made. Until now we are focused entirely on the world of custom DotNetNuke Modules, Microsoft CRM and xRM integration technologies and SilverLight 3.0. With all the Free DNN Modules to publish for download from our site at and the custom module development work, we have never found the time to share so much as a thought to blogging. The time has come, and we expect this blog to be a point of contact for people interested in our DotNetNuke skins, modules, and hosting, but also a place where we can share the expertise we have developed over many years of working with ASP.Net and other Microsoft Technologies. We hope you enjoy reading what we have to share.