A few people at the MIX essentials event we organized in April requested me to post the source code for the Silverlight demo we gave in the opening keynote. So, here is the code (download at the bottom) along with some explanations of what we implemented. What's also available: a running example hosted at Silverlight Streaming . Check out the recording of the session to view the demo being demonstrated live. Button style The "Refresh" button's style is customized by using Application Resources. Application

Introduction In order to provide an editing experience as close as possible to the runtime, Expression Blend executes some of the user defined code (it instantiates controls, data sources, sets properties, etc.). But in some cases, you may want to avoid this behavior (if that code doesn't work properly when executed inside Blend or if it is a more time consuming experience). This post explains how to detect if your code is executed inside Blend and provide an alternate implementation for that case.

This example shows how databinding and styles can be used for displaying a set of connected nodes. To better illustrate this, I've added some basic interactivity: the nodes can be dragged using the mouse and databinding will update automatically the positions of the lines. For simplicity, I will use a set of predefined nodes and a set of predefined lines connecting those nodes (but, the functionality could be easily exteded to create them dynamically). I've used mainly Microsoft Expression Interactive