如何释放不在“视野”中的图像控制的存储器。列表视图 [英] How to release memory of image controls which are not in "field of view" of listview

问题描述

我有一个带有图像控件的列表视图，绑定了Uri值（磁盘上的图像路径）。

我想要仅转换视野中的那些Uri并处置（或转换回Uri），这些都离开了视野。



提前致谢。



我尝试了什么：



我用IValueConverter进行转换Uri to Image但是ConvertBack没有触发。

< Image Source ={Binding PageSource，Mode = TwoWay，UpdateSourceTrigger = Explicit，Converter = {StaticResource ImageConverter}}Horizo​​ntalAlignment =中心VerticalAlignment =Top/> 
 

解决方案

带有数千张图片的WPF ListBox（UI响应） [< a href =https://social.msdn.microsoft.com/Forums/vstudio/en-US/79dba54a-987a-455b-9bfd-d07cb5281192/wpf-listbox-with-thousands-of-images-ui-responsiveness？ forum = wpftarget =_ blanktitle =New Window> ^ ]



如何为wpf listview启用虚拟化以提高性能？ [ ^ ]

Hi,

I have a listview with Image control, bound with Uri value (image path on disk).
I want to convert only those Uri in "Field of view" and dispose (or convert back to Uri) which goes out of "Field of View".

Thanks in advance.

What I have tried:

I have used IValueConverter to convert Uri to Image but ConvertBack is not firing.

<Image Source="{Binding PageSource,Mode=TwoWay, UpdateSourceTrigger=Explicit, Converter={StaticResource ImageConverter}}" HorizontalAlignment="Center" VerticalAlignment="Top"/>

解决方案

WPF ListBox with Thousands of images (UI responsiveness)[^]

How to enable Virtualization for a wpf listview to improve performance?[^]

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