WPF C#

    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="ControlTemplates" Height="300" Width="300" WindowStartupLocation="CenterScreen">
    
    
      
      
      
      
        
          
            
            
            
          

          
            
              
            
            
              
              
            
          

        
      

    
      
  

          Style ="{StaticResource roundButtonTemplate}"
      Click ="myButton_Click">
      Click!
    

//File:Window.xaml.cs
using System;
using System.Collections.Generic;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;
namespace WpfApplication1
{
  public partial class MainWindow : System.Windows.Window
  {
    public MainWindow()
    {
      InitializeComponent();
    }
    protected void myButton_Click(object sender, RoutedEventArgs args)
    {
      MessageBox.Show("Clicked!");
    }
  }
}