.net4中仍然存在内存泄漏-将内存BitmapImage绑定到图像源 [英] still memory-leaks in .net4 - binding memory BitmapImage to Image-Source

问题描述

我知道过去曾在这里问过非常类似的问题-但都没有解决我问题的方法:

I know very similar questions were asked here in the past - but neither had a solution for my problem:

我将内存中的图像加载到BitmapImage中:

I load a image from memory into a BitmapImage:

    private static BitmapImage LoadImage(byte[] imageData)
    {
        if (imageData == null || imageData.Length == 0) return null;
        var image = new BitmapImage();
        using (var mem = new MemoryStream(imageData))
        {
            mem.Position = 0;
            image.BeginInit();
            image.CreateOptions = BitmapCreateOptions.PreservePixelFormat;
            image.CacheOption = BitmapCacheOption.OnLoad;
            image.UriSource = null;
            image.StreamSource = mem;
            image.EndInit();
        }
        image.Freeze();
        return image;
    }

然后将其(与INotifyPropertyChange一起使用)将生成的BitmapImage绑定到Image对象的源(在页面上).

And then use this (with INotifyPropertyChange) to bind the resulting BitmapImage to the Source of a Image object (on a Page).

问题是:这将泄漏内存(在我的情况下，在2-3张图像上最多可能浪费300MB！)

Problem is: this will leak memory (a lot in my case up to 300MB on 2-3 images!)

您甚至没有使用Profilers来找到它-只有.net Memory Profiler使我步入正轨(因为它位于所有字节都在非托管内存中，所以ANTS告诉我".NET正在使用19,24MB的367，分配给应用程序的专用字节总数为3MB"-不错):

You don't even find this using Profilers - only the .net Memory Profiler got me on track (as it's in unmanaged memory where all the bytes go - so ANTS tell me ".NET is using 19,24MB of 367,3MB total private bytes allocated to the application" - nice):

无论我如何尝试-我都无法避免泄漏. 尝试过(一次又一次):

No matter what I try - I don't get this leak away. Tried (single and all at once):

• 清除视觉树/卸载时删除图像
• 将图像源设置为空
• 在矩形中使用ImageBrush而不是Image
• 其他不处理MemoryStream的CacheOptions
• 不要冻结图像

我不明白这个-真的！ 一旦我停止在Source中使用Image，一切正常(没有泄漏).

I don't get this - really! As soon as I stop using the Image in the Source everything is ok (no leak).

有人可以尝试吗?

备注 看来这根本没有错误(请参阅我的第二条评论)-我必须检查一下，以便现在让我打开问题-也许这也可以帮助解决其他问题

REMARK Seems like this is no bug at all (see my second comment) - I have to check this so I will let the question open for now - maybe this can help with the other questions on this as well

推荐答案

对不起-这的确不是错误"，而是由高分辨率图片引起的.

Sorry guys - this was indeed no "BUG" but caused by high-resolution pictures.

如果我要删除问题，还是应该将其留在这里，因为其他人可能会遇到同样的情况，请对此发表评论...

Please comment on this if I should delete the question or if I should leave it here as other people might come into the same situation...

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