Files
Before we go much further, we're going to want to save the data that we've been collecting into a file. To do that, we need to agree upon a storage mechanism and the layout for our data. One popular option for storing and for transmitting data is JSON. JSON stands for JavaScript Object Notation, but with JSON. NET, an open source application, it's extremely easy to move. NET objects into JSON format. JSON. NET is available through CodePlex or through using NuGet. It creates a format that is easy to use and human readable, which can be critical in an application like this in the development and debugging of working with complex data. Let's take a look at how we can convert our customer class into JSON format.

Navigation
We come now to a critical phase in the development of our application in which we will create additional pages and navigate among them. To get started, let's create a second page and see what's involved in navigating between the second page and the first, potentially passing data between the pages.

Charms
Windows 8 Charms provide universal access to such common features as searching, sharing, and settings. You acquire the charms by sliding them in from the right side of the screen. The charms are always the same across all applications. You can choose which of these charms to implement through the use of contracts. We'll implement the sharing charm. Virtually any application can easily be a sharing source. All that is required is to respond to the DataTransferManagers's OnDataRequest event and to package your data either as text, HTML, images, URL, etc. Let's take a look at how we can make Conference Buddy into a sharing source. We're going to have Conference Buddy respond to the sharing charm and be a sharing source.