The slide show uses javascript to make an AJAX request for information about the next media object and then it displays it when the timer ticks. The key javascript function is showNextMediaObject in the script file gs\script\mediaobjectview.js. This function displays the next item in the album and then at the end calls a web service named GetMediaObjectHtml (located in gs\services\Gallery.asmx.cs) to pre-load the information about the next item.

So the breakpoints you'll want to set will be in javascript and/or the web service method.

SilverlightControl.js and SilverlightMedia.js are provided by MS. They are required for playing video and audio with Silverlight.

htmlOutput is a variable that holds the HTML for a media object. For an image, it will consist of the <img ... /> tag. For some types of video and audio (depending on how the HTML template is configured in galleryserverpro.config), it will be an <object ... /> tag.

As you navigate back and forth between objects in an album, the htmlOutput variable is populated via an AJAX request. To render the next (or previous) object, javascript replaces the old HTML in the DOM with the new HTML stored in htmlOutput. That causes the new media object to appear.

scriptOutput contains javascript that must be executed to help render a media object. I had to add this variable to support Silverlight because Silverlight requires a combination of HTML, XAML, and javascript.

For non-Silverlight objects, the scriptOutput variable will be empty. I don't think htmlOutput and scriptOutput should ever contain the same value.

Hope this helps,

If you look carefully at the scriptOutput template defined for Silverlight media files (e.g. wma, wmv, mp3) in galleryserverpro.config, you will see this line:

Array.add(_mediaObjectsToDispose, &quot;mp1&quot;);

That adds the Silverlight object to the array, which is then disposed by the code you cited.

I'm not sure what your dev environment is like, but if you are using Visual Studio you can use a global find function to find all instances of _mediaObjectsToDispose in the project - that would have helped you.

I am not sure what is going on with the animation. I haven't seen that error before. Sorry.