Make a central part of the photo is displayed in the box size without changing “Stretch” and the size of the box?

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WPF

image

In WPF program, I use “Toolbox Image” to display a photo by clicking “Button”. The created box size in “Toolbox Image” is smaller than the actual size of that photo. When choosing “Stretch = UniformToFill”, I can only see a part of the photo (the upper left-hand corner of photo). So how to make a central part of the photo is displayed in the box size without changing “Stretch” and the size of the box?
linkmediafire

Code XML

<Window x:Class="example.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <Button Content="Button" HorizontalAlignment="Left" Height="42" Margin="408,36,0,0" VerticalAlignment="Top" Width="83" Click="Button_Click"/>
        <Image Name="image" HorizontalAlignment="Left" Height="57" Margin="25,36,0,0" VerticalAlignment="Top" Width="275" Stretch="UniformToFill"/>
        <Image Name="image2" HorizontalAlignment="Left" Height="168" Margin="25,141,0,0" VerticalAlignment="Top" Width="275" Stretch="Fill"/>
        <Label Content="image1" HorizontalAlignment="Left" Height="26" Margin="25,10,0,0" VerticalAlignment="Top" Width="47"/>
        <Label Content="Image2" HorizontalAlignment="Left" Height="25" Margin="25,111,0,0" VerticalAlignment="Top" Width="47"/>

    </Grid>
</Window>

Code C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
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.Navigation;
using System.Windows.Shapes;

namespace example
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            image.Source = new BitmapImage(new Uri(@"C:\Users\doduc_000\Desktop\a.jpg"));
            image2.Source = new BitmapImage(new Uri(@"C:\Users\doduc_000\Desktop\a.jpg"));
        }
    }
}