BitmapImage数据绑定单例

本文关键字:单例 数据绑定 BitmapImage | 更新日期: 2023-09-27 18:16:04

我有一个单例BitmapImage我试图将它绑定到我的xaml视图,我得到:

The calling thread cannot access this object because it is owned by another thread

下面是我的代码:

BitmapImage bitmap = new BitmapImage();
bitmap.BeginInit();
bitmap.UriSource = new Uri(fullFilePath, UriKind.Absolute);
bitmap.EndInit();
MySingleton.Instance.image = bitmap;

My singleton:

private BitmapImage _image;
  public BitmapImage image
  {
     get { return _image; }
     set
     {
       _image = value;
       PropertyChanged(this, new PropertyChangedEventArgs(nameof(image)));
     }
  }

And my xaml:

<Image Source="{Binding image, Source={x:Static module:MySingleton.Instance}}" Name="TestImage" HorizontalAlignment="Center"  Height="Auto" VerticalAlignment="Center" Width="Auto"></Image>

我尝试bitmap.Freeze();,但得到错误:

freeable不能被冻结

我不知道它是否没有意义,但我在websocket onmessage事件中实例化了位图

BitmapImage数据绑定单例

您的代码必须放在Dispatcher中。

Application.Current.Dispatcher.Invoke(() =>
{
  //(your code here)
});

Application.Current.Dispatcher.BeginInvoke((Action)(() =>
{
   //(your code here)
}));