Creating and implementing ValueConverters in your app

In this section, we will begin creating the ImageConverter class for our TrackMyWalks solution. ValueConverters are an important concept in data binding, as they allow you to customize the appearance of a data property at the time it is bound. This process is quite similar to WindowsPresentationFoundation (WPF) on the Windows application development platform.

The Xamarin.Forms platform provides you with a number of ValueConverter interfaces as part of its API. These are extremely helpful as they allow you to toggle the visibility of elements based on a Boolean property, or display an image based on a String property.

Let's start creating the ImageConverter class for our TrackMyWalks app by performing the following the steps:

1. Ensure that the TrackMyWalks solution is open in the Visual Studio for Mac IDE.
2. Right-click on the TrackMyWalks shared project, choose Add | New Folder from the pop-up menu, and enter ValueConverters for the name of the...