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Kent (of course) has the right answer. But I thought I would go ahead and post the code for the converter that converts from the System.Drawing.Bitmap (Windows Forms) to a System.Windows.Windows.Media.BitmapSource (WPF) ... as this is a common problem/question. This takes three steps: <ol> <li>Use an image converter in your binding.</li> <li>Create the converter.</li> <li>Declare the converter in your resources.</li> </ol> Here is how you would use an image converter in your binding: <pre><code><Setter Property="MenuItem.Icon" Value="{Binding Path=Icon, Converter={StaticResource imageConverter}}" /> </code></pre> And, here is the code for the converter (put it into a file called ImageConverter.cs) and add it to your project: <pre><code>[ValueConversion(typeof(Image), typeof(string))] public class ImageConverter : IValueConverter { public object Convert(object value, Type targetType, object parameter, CultureInfo culture) { BitmapSource bitmapSource; IntPtr bitmap = ((Bitmap)value).GetHbitmap(); try { bitmapSource = Imaging.CreateBitmapSourceFromHBitmap(bitmap, IntPtr.Zero, Int32Rect.Empty, BitmapSizeOptions.FromEmptyOptions()); } finally { DeleteObject(bitmap); } return bitmapSource; } public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) { return null; } [DllImport("gdi32.dll", CharSet=CharSet.Auto, SetLastError=true)] static extern int DeleteObject(IntPtr o); } </code></pre> Here is how you declare it in your resources section (note the local namespace that you will have to add): <pre><code><Window x:Class="WpfApplication1.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:local="clr-namespace:WpfApplication2" > <Window.Resources> <local:ImageConverter x:Key="imageConverter"/> </Window.Resources>  </Window> </code></pre> And that's it! <hr> Update After doing a quick search for similar questions, I noticed that <a href="https://stackoverflow.com/users/1242/lars-truijens">Lars Truijens</a> pointed out <a href="https://stackoverflow.com/questions/1118496/using-image-control-in-wpf-to-display-system-drawing-bitmap/1118557#1118557">here</a> that the previous converter implementation leaks. I have updated the converter code above ... so that it doesn't leak. For more information on the cause of the leak, see the remarks section on this MSDN <a href="http://msdn.microsoft.com/en-us/library/1dz311e4(v=VS.100).aspx" rel="nofollow noreferrer">link</a>.
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