This is the second of another four part series on building cross platform apps using Xamarin and C#. In this episode I am joined by James Montemagno, a developer evangelist at Xamarin. James shows us the new Xamarin Designer for iOS that is integrated directly into Visual Studio to design iOS applications. You don't need to use XCode to build the UI. You can stay in Visual Studio! We take a look at several features of the designer including auto-layout, constraints, and even custom controls.