c# - 系统内存不足异常mediaelement wpf

Question

我有屏幕保护应用程序，这个应用程序播放视频和照片正常工作两个小时，我得到系统内存不足异常如何解决这个问题？
我将计时器设置为 10 秒并调用 SlideShow() 方法..

private void SlideShow()
{
     if (animating == false)
         {
                animating = true;
                if (images.Count <= imgIndex)
                    imgIndex = 0;

                index = images.Count > imgIndex ? imgIndex : 0;

                imgIndex++;
                fadeOUT.From = 1;
                fadeOUT.To = 0;
                fadeOUT.Duration = TimeSpan.FromSeconds(CrossFadeTime);
                fadeOUT.Completed += new EventHandler(fadeIN_Completed);

                fadeIN.From = 0;
                fadeIN.To = 1;
                fadeIN.Duration = TimeSpan.FromSeconds(CrossFadeTime);
                fadeIN.Completed += new EventHandler(fadeIN_Completed);
                if (images[index].Contains(".wmv") || images[index].Contains(".mkv") || images[index].Contains(".mp4"))
                    myMediaElement.Visibility = System.Windows.Visibility.Hidden;
                else
                {
                    if (myMediaElement.Visibility == System.Windows.Visibility.Hidden)
                        myMediaElement.Visibility = System.Windows.Visibility.Visible;
                }

                myMediaElement.UnloadedBehavior = MediaState.Manual;
                myMediaElement.Stop();
                myMediaElement.Source = null;
                myMediaElement.Close();
                myMediaElement.Source = new Uri(images[index], UriKind.RelativeOrAbsolute);
                myMediaElement.Stretch = Stretch.Uniform;
                myMediaElement.Volume = 0;

                myMediaElement1.UnloadedBehavior = MediaState.Manual;
                myMediaElement1.Stop();
                myMediaElement1.Source = null;
                myMediaElement1.Close();
                System.Threading.Thread.Sleep(900);
                myMediaElement1.Source = new Uri(images[images.Count > index + 1 ? index + 1 : 0], UriKind.RelativeOrAbsolute);
                myMediaElement1.Stretch = Stretch.Uniform;
                myMediaElement1.MediaOpened += myMediaElement1_MediaOpened;
                myMediaElement1.MediaEnded += myMediaElement1_MediaEnded;
                myMediaElement.BeginAnimation(Image.OpacityProperty, fadeOUT, HandoffBehavior.SnapshotAndReplace);
                myMediaElement1.BeginAnimation(Image.OpacityProperty, fadeIN, HandoffBehavior.SnapshotAndReplace);
            }
        }

Answer 1

您必须尽可能减少应用程序的内存消耗，直到异常消失。

您可以通过在子窗口关闭时取消注册事件来减少内存消耗。例如:

    myMediaElement1.MediaEnded -= myMediaElement1_MediaEnded;

Begin Animation 完成后，您可以将 null 分配给所有 MediaElement 属性，然后启动 MediaElement1 的 BeginAnimation

     myMediaElement.Source=null;
     myMediaElement.UnloadedBehavior = null;  (if possible)
      .
      .

这Link进一步阐述内存泄漏