Configuring IIS for Silverlight Applications

KBA-01067-8Q0ZNL Purpose & Scope Microsoft® SilverlightTM is a cross-browser, cross-platform plug-in for delivering the next generation of .NET based media experiences and rich interactive applications for the Web. Silverlight offers a flexible programming model that supports AJAX, VB, C#, Python, and Ruby, and integrates with existing Web applications. Silverlight supports fast, cost-effective delivery of high-quality video to all major browsers running on the Mac OS or Windows. In most cases, hosters do not need to perform particular deployments to support Silverlight. However, check for the following basic items that could prevent Silverlight from functioning correctly. Procedure MIME Types In Windows Server 2008 IIS 7.0 All MIME types needed to support Silverlight are implemented by default in Windows Server 2008 IIS 7.0 and Windows Vista SP1.  Windows Vista RTM customers can add mime types by running ‘IIS Manager’, clicking on ‘Mime Types’, then clicking ‘add’ and adding the following mime types:… Read More »Configuring IIS for Silverlight Applications

Cannot Run Project in Expression Blend 3

Error While working in Expression Blend 3 we found on one of our work computers we could not run the project from blend. We were on a Windows Vista and later Windows 7 box, and found that running the project would just return a message like: “Page cannot be displayed” or similar. Research showed that this was cause by the little application that hosts the local website that runs the project being blocked by an update to Window Defender and Forefront Security. This update mad a modification to the “hosts” file.   The Fix Open this file: C:WindowsSystem32driversetchosts in Notepad, and add the following entry:       localhost Making it look something like this:   A subsequent signature update to both Windows Defender and and Forefront Client Security, released on the same day as the earlier update, should not cause this problem. Gotta love that!

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