Working with behaviors
Blend for Visual Studio 2012 makes it possible for designers to create interactive applications and prototypes instead of static art or click-through designs. There are many ways that you can create interactivity in your application, whether you drag a prepackaged behavior onto an object, configure triggers, or write code that will respond to events. The topics in this section describe the different ways in which you can create interactivity in your application.
You can use behaviors to add interactivity to your application without having to write any code. Behaviors are reusable pieces of packaged code that can be dragged onto any object, and then fine-tuned by changing their properties. Instead of being limited to controlling storyboards or defining the appearance of controls, you can design the way your application responds to users by using the standard behaviors that come with Blend.
For more information, see Add a behavior to an object.
For more information, see Add a behavior that was created by someone else.