Expression Blend 4: Conditional Behaviors & Data Store

You can now build conditional logic without the need to write code. In addition, different parts of your application can communicate via data store without writing any code, too!

When you fill user and password fields and click Login button in my sample application, user name and authentication info are written to Data Store, main menu and Home page with logged user name are displayed.

New SetDataStoreValueAction writes the value of a property to Data Store and optionally animates the change over time.

Using Data panel you can manage the Data Store and its properties.

New DataStoreChangeTrigger fires when a specified property in the Data Store changes.

You can drag a property from the DataStore onto the art board.

Useful links

• Using Behaviors in Blend 4 (Silverlight TV 30)
• SketchFlow: Conditional Navigation Behavior Sample
• SketchFlow: Global State Behavior Sample
• Introducing Blend 4 – For Silverlight, WPF and Windows Phone

• Expression Blend Number Guesser using DataStore