UPDATED CODE available in the NDCPortable sample

This simple to-do list app demonstrates using a Portable Class Library to share code between Xamarin.iOS, Xamarin.Android and Windows apps.

To keep the code simple we use a single XML file as the data-store - it contains a serialized collection of Task objects that we read & write to when the user edits their to-do items.

There are two implementations of the Portable code:

• C#
• Visual Basic!

Because Portable Class Library profiles do not allow System.IO we expose an interface in the shared code that we implement in our apps (IXmlStorage). Thanks to the magic of .NET the two language implementations are interchangeable and application code 'just works' whichever PCL you reference.

If you are browsing the VB code, this Visual Basic Reference might come in handy ;)