private void GlassButton_Click(object sender, RoutedEventArgs e)
{
    MessageBox.Show("Glass Button Clicked");
}

using System.ComponentModel;
using System.Windows;
using Intersoft.Client.Framework.Input;

namespace ClientUI.Samples.ViewModels
{
    public class MainPageViewModel : INotifyPropertyChanged
    {
        public DelegateCommand SubmitCommand { get; set; }

        public MainPageViewModel()
        {
            this.SubmitCommand = new DelegateCommand(ExecuteSubmit, CanExecuteSubmit);
        }

        private bool CanExecuteSubmit(object parameter)
        {
            return true; // you can use validation here to determine when the command is available.
        }

        private void ExecuteSubmit(object parameter)
        {
            MessageBox.Show("Submit");
        }

        protected void OnPropertyChanged(string propertyName)
        {
            PropertyChangedEventHandler handler = PropertyChanged;

            if (handler != null)
            {
                handler(this, new PropertyChangedEventArgs(propertyName));
            }
        }

        public event PropertyChangedEventHandler PropertyChanged;
    }
}