Detect Design Time Mode in WPF

bool designTime = System.ComponentModel.DesignerProperties.GetIsInDesignMode(
    new DependencyObject());

dim designTime as Boolean = DesignerProperties.GetIsInDesignMode(
    New DependencyObject)

Daniel Vaughan is a Microsoft MVP and cofounder of Outcoder, a Swiss software and consulting company dedicated to creating best-of-breed user experiences and leading-edge back-end solutions, using the Microsoft stack of technologies--in particular Silverlight, WPF, WinRT, and Windows Phone.
 
Daniel is the author of Windows Phone 7.5 Unleashed, the first comprehensive, start-to-finish developer's guide to Microsoft's Windows Phone 7.5.
 
Daniel is also the creator of a number of open-source projects, including Calcium SDK, and Clog.
 
Would you like Daniel to bring value to your organisation? Please contact

Daniel's Blog | MVP profile | Follow on Twitter
 
Windows Phone Experts