我正在使用MediaElement长时间循环显示视频片段 . 经过一段时间(Win 7/4 GB RAM的小时数)后,程序崩溃,“内存不足”类型除外 . 我已经监视了使用Process Explorer-Sysinternals时使用的内存,并使用System.Diagnostics.Process方法记录了它 . 两种方式都表明使用的内存逐渐增加 .
这是代码:
XAML:
<Grid Name="GridTest">
<MediaElement x:Name="MediaPlayer"
LoadedBehavior="Manual"
MediaEnded="VideoControl_MediaEnded"
MediaOpened="MediaPlayer_MediaOpened"
Source="{Binding Mode=OneWay,
Path=MySource}" />
</Grid>
的.cs:
public partial class MainWindow : Window
{
public MainViewModel model = new MainViewModel();
public MainWindow()
{
InitializeComponent();
this.GridTest.DataContext = model;
// fill in model.MediaFilesUris:
...
}
private void Window_Loaded(object sender, RoutedEventArgs e)
{
// choose the next media file
...
MediaPlayer.Play();
}
private void VideoControl_MediaEnded(object sender, RoutedEventArgs e)
{
// choose the next media file
...
model.OnPropertyChanged("MySource");
MediaPlayer.Play();
}
}
public class MainViewModel : INotifyPropertyChanged
{
public event PropertyChangedEventHandler PropertyChanged;
public void OnPropertyChanged(string propertyName)
{
PropertyChangedEventHandler handler = PropertyChanged;
if (handler != null) handler(this, new PropertyChangedEventArgs(propertyName));
}
public Uri[] MediaFilesUris = null;
public int crn = 0;
public Uri MySource { get { if (MediaFilesUris != null && MediaFilesUris.Count()>0) return MediaFilesUris[crn]; else return null; } }
}
我还测试了MediaElement对象在多个剪辑之后被动态创建,销毁(以及所有取消订阅事件等)并再次创建的情况 . 记忆力再次消耗殆尽 .
任何建议,将不胜感激!
1 回答
我的建议是做以下事情: