This may help you, try to look at /Settings/Media Types/Image and see the Generic properties.

You can use alias "umbracoExtension" and "umbracoBytes".

That's not quite helping. the umbracoBytes contains the length and umbracoFile gets me the filename (path in fact) and umbracoExtension gets the file extension (so I can use that to product a Mime Type) but I want to read the file itself. What is the best way to read the content of the file into memory, given all I have is a relative path?

i.e. is there a public class/method that is used by the umbraco backend that is aware of things like UmbracoFileSystemProviders in order to get the file itself (whether it is stored locally or via https://github.com/JimBobSquarePants/UmbracoFileSystemProviders.Azure for instance.)

Having spent the evening reading some Umbraco source code, I think what I need is IFileSystem. There are probably enough clues in the Umbraco.Web.Editors.ImagesController to see what I need to do.

As (16 months later) I was looking for this (again) here the the answer I came up with ...

   public class SheetIOMediaReader
{
    public byte[] Read(IMedia med)
    {
        if (med != null)
        {
            var mediaFileSystem = FileSystemProviderManager.Current.GetFileSystemProvider<MediaFileSystem>();
            var imagePath = med.Properties["umbracoFile"].Value.ToString();
            var fullOrgPath = mediaFileSystem.GetFullPath(mediaFileSystem.GetRelativePath(imagePath));
            if (!mediaFileSystem.FileExists(fullOrgPath))
            {
                return null;
            }
            byte[] res = null;

            using (var fileStream = mediaFileSystem.OpenFile(fullOrgPath))
            {
                if (fileStream.CanSeek) fileStream.Seek(0, 0);
                byte[] buffer = new byte[16*1024];
                using (MemoryStream ms = new MemoryStream())
                {
                    int read;
                    while ((read = fileStream.Read(buffer, 0, buffer.Length)) > 0)
                    {
                        ms.Write(buffer, 0, read);
                    }
                    res = ms.ToArray();
                }

            }
            return res;

        }
        return null;
    }
}

Hi,

I am using Umbraco 7.5.13. The IMedia "umbracoFile" property value returned is a JSON string. It must be parsed.

            dynamic jsonValue = JObject.Parse(imagePath);
            string propertyValue = jsonValue.src.Value;

            var relativePath = mediaFileSystem.GetRelativePath(propertyValue);
            var fullOrgPath = mediaFileSystem.GetFullPath(relativePath);

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