Binding Events to Methods in the Silverlight MVVM View Models

using System;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.ComponentModel;

namespace EventBindingExample.ViewModels
{
    public class MainPageViewModel : INotifyPropertyChanged
    {
        // Implementation of INotifyPropertyChanged interface
        public event PropertyChangedEventHandler PropertyChanged;
        protected void NotifyPropertyChanged(string propertyName)
        {
            if (PropertyChanged != null)
            {
                PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
            }
        }

        // Properties
        private string displayText;
        public string DisplayText
        {
            get { return displayText; }
            private set
            {
                displayText = value;
                NotifyPropertyChanged("DisplayText");
            }
        }

        // Public methods
        public void WndSizeChanged(object sender, SizeChangedEventArgs e)
        {
            DisplayText = "Window height: " + e.NewSize.Height.ToString()
                + " Window Wdith: " + e.NewSize.Width.ToString();
        }
    }
}