Хотите создать решение WPF в шаблоне MVVM

I am newbie in WPF world and want to create a solution where I want to write MVVM program using C# and XAML to perform some simple computations.

The MainWindow xaml has an named outer grid View.

The xaml code behind (MainWindow.xaml.cs) may only contain a constructor

which sets the View.DataContext to an instance of a new ViewModel class.

 public partial class MainWindow : Window

    {

        public MainWindow()

        {

            InitializeComponent();

            View.DataContext = new ViewModel();

        }

    }
Use xaml and additional code / classes to implement the bindings to implement

the following behavior.

MainWindow user interface contains :

two input textboxes A and B (with Width=100 and Height=25).

two result textboxes containing : C = A + B, and D = A * B, these update, when A or B change.

MainWindow background color is:

LightBlue when mouse cursor enters A inputbox

LightGreen when mouse cursor enters B inputbox

LightGray all other cases.