How to add image to Togglebutton without using XAML?

I'm trying to add a image to a togglebutton in WPF - C#. The thing is that the assignment I'm working on can't be made with the use of XAML at all. I've tried to set the Content property to an image, but all I get is a normal togglebutton, which isn't helping my cause at all.

    myToggleButton = new ToggleButton();
    myImage = new Image();
    BitmapImage bmi = new BitmapImage();
    bmi.BeginInit();
    bmi.UriSource = new Uri("myImageResource.bmp", UriKind.Relative);
    bmi.EndInit();
    myImage.Source = bmi;
    myToggleButton.Content = myImage;

Hope I supplied enough info, if not please ask for more.

Updated @Phil Wright:

When I ad an image like this:

    myImage = new Image();
    BitmapImage bmi = new BitmapImage();
    bmi.Begin开发者_如何学运维Init();
    bmi.UriSource = new Uri("myImageResource.bmp", UriKind.Relative);
    bmi.EndInit();
    myImage.Source = bmi;

it works...

Update @Matt West:

    myGrid.Children.add(MyToggleButton); // This gives me an empty ToggleButton
    myGrid.Children.add(MyImage); // This gives me an image with content

You are creating a new toggle button but you aren't adding it to anything. The image is getting added to the toggle button but the actual toggle button isn't added as a Child to anything. You either need to add the toggle button in code behind with something like this:

this.AddChild(myToggleButton);

Or if you already have the toggle button defined in XAML with a name of myToggleButton then remove this line from your code above

myToggleButton = new ToggleButton();

As requested here is the code that works for me in its entirety:

<Window x:Class="WpfApplication1.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 Name="_Root">

    </Grid>
</Window>

using System;
using System.Collections.Generic;
using System.Linq;
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.Navigation;
using System.Windows.Shapes;
using System.Windows.Controls.Primitives;

namespace WpfApplication1
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();

            var tb = new ToggleButton();
            var image = new Image();
            BitmapImage bmi = new BitmapImage();
            bmi.BeginInit();
            bmi.UriSource = new Uri("/Images/6.png", UriKind.Relative);
            bmi.EndInit();
            image.Source = bmi;
            tb.Content = image;
            _Root.Children.Add(tb);
        }
    }
}

Where the image is a resource; as noted before those last two lines make no sense, if you can get the image to display on its own it should also display inside the button.

Are you sure that the provided bitmap resource is able to be located. If not then the image will be empty and so occupy no space and hence the toggle button looks empty.

image of a toggle button can be set like this:

ToggleButton tgb = new ToggleButton();
BitmapImage bmi = new BitmapImage();
bmi.BeginInit();
bmi.UriSource = new Uri("myImageResource.bmp", UriKind.Relative);
bmi.EndInit();
tgb.Content = new Image { Source = bmi };