如何使用调度程序加载多个图像 [英] How to use the dispatcher to load multiple images

问题描述

我有与此问题，问题就会得到回答，并且答案似乎也可以（理论上）解决我的问题。但是我不知道如何实现提供的答案。

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.

建议在加载多张图像时，我将它们分批处理，然后执行一些操作，然后使用调度程序开始处理接下来的几张图像

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.

我试图编写一个名为 LoadNextFive（int startIndex）的函数，但在该函数的末尾这样称呼自己： this.Dispatcher.BeginInvoke（（）=> {LoadNextFive（startIndex + 5）;}）; 但它似乎没有用。我是使用调度程序错误还是执行错误的答案？

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?

-编辑-
我目前仅尝试一次加载1张图像。

--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());
    }
}

推荐答案

它似乎当我重写代码时，我忘了重写的一部分。因此仍然是错误。上面的代码工作正常。所以我的问题现在已经过时了。

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.

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