Pack URI to image embedded in a resx file

Question

How do I construct a pack URI to an image that is in a resource file?

I have an assembly called MyAssembly.Resources.dll, it has a folder called Ima

Answer 1

As Walt has correctly stated, what you get out of a resx file is a System.Drawing.Bitmap. So this needs to be converted to a System.Windows.Media.ImageSource or subtype.

I'm not sure if this falls under time wasters for you because it does not employ an URI, but here is how I get images from resx files in another library. I use a simple proxy because the resx designer file only exposes an internal constructor (even if the class is public), then define a ValueConverter that will provide the ImageSource.

AssetsProxy:

namespace MyAssembly.Resources
{
    public class AssetsProxy : Images.Assets
    {
        public AssetsProxy() : base() { }
    }
}

Bitmap to ImageSource conversion:

using System;
using System.Drawing.Imaging;
using System.Globalization;
using System.IO;
using System.Windows.Data;
using System.Windows.Media.Imaging;

namespace MyAssembly.Resources
{
    /// 

    /// Converts a BitmapImage, as provided by a resx resource, into an ImageSource/BitmapImage
    /// 
    public class BitmapToImageSourceConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            BitmapImage bitmapImage = null;
            if (value is System.Drawing.Image)
            {
                bitmapImage = ((System.Drawing.Image)value).ToBitmapImage();
            }
            return bitmapImage;
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }

    public static class BitmapExtensions
    {
        /// 

        /// Converts the System.Drawing.Image to a System.Windows.Media.Imaging.BitmapImage
        /// 
        public static BitmapImage ToBitmapImage(this System.Drawing.Image bitmap)
        {
            BitmapImage bitmapImage = null;
            if (bitmap != null)
            {
                using (MemoryStream memory = new MemoryStream())
                {
                    bitmapImage = new BitmapImage();
                    bitmap.Save(memory, ImageFormat.Png);
                    memory.Position = 0;
                    bitmapImage.BeginInit();
                    bitmapImage.StreamSource = memory;
                    bitmapImage.CacheOption = BitmapCacheOption.OnLoad;
                    bitmapImage.EndInit();
                }
            }
            return bitmapImage;
        }
    }
}