Question

I have the same problem as stated in this question, and the question is answered and the answer seems also to (theoretically) work in my problem. But I can’t figure out how to implement the answer provided.

It suggest that when loading multiple images I batch them and just do a few and then use the dispatcher to start working on the next few.

I tried to write a function called LoadNextFive(int startIndex) and in the end of the function it just called itself like this: this.Dispatcher.BeginInvoke(() => { LoadNextFive(startIndex + 5); }); but it just didn’t seem to work. Am I using the dispatcher wrong or am I implementing the answer wrong?

–EDIT–
I currently tried to just load 1 image at the time.

public void LoadNextImage()
{
    if(m_enumerator.MoveNext())
    {
        if (!m_bitmapSources.ContainsKey(m_enumerator.Current))
        {
            ZipEntry imageEntry = m_zip.GetEntry(m_enumerator.Current);
            using (Stream imageStream = m_zip.GetInputStream(imageEntry))
            {
                BitmapImage source = new BitmapImage();
                source.SetSource(imageStream);

                m_bitmapSources.Add(m_enumerator.Current, source);
            }

            m_dispatcher.BeginInvoke(() => LoadingTemplate.ChangeText(this, "")); //change loadingtext (provides % in future) and it calls this function again
        }
        else
        {
            m_dispatcher.BeginInvoke(() => LoadNextImage());
        }
    }else{
        //starts after every image is done loading
        LoadPages(); 
        LoadMonths();

        OnLoadComplete(new EventArgs());
    }
}

Answer 1

It seemed that when I rewrote my code I forgot a part to rewrite. Hence still the bug. The code above works fine. So my question is now obsolete.