Data binding is extreme effective way of connecting XAML to C#. In this example, I show how to make the simplest data binding possible.

First, create a dummy windows phone app.
Second, add a text box. The only thing we need to add to this text box is data binding feature. To do that, we open XAML editor and add the following:

Text="{Binding Name}"

to our textbox, that's it.

Third, in our C# code, we need to add a property to connect with the Texbox. Below is my example.

namespace PhoneApp2
{

     public class Student
    {
        public string Name { get; set; }
        public string Lastname;
    }

     public partial class MainPage : PhoneApplicationPage
    {
        private Student _firstStudent;
        // Constructor
        public MainPage()
        {
            InitializeComponent();
            
            Loaded += MainPage_Loaded;

             // Sample code to localize the ApplicationBar
            //BuildLocalizedApplicationBar();
        }

         void MainPage_Loaded(object sender, RoutedEventArgs e)
        {
            _firstStudent = new Student()
            {
                Name = "Joseph Doors"
            };
            ContentPanel.DataContext = _firstStudent;
        }
    }
}

This should produce an output similar to this: