wpf-mediaElement [英] wpf - mediaElement

问题描述

我将播放列表从.wpl文件加载到列表框中.它显示了所有项目
但它们的索引保持为"-1".
但是当我将项目拖到列表框中时，它们的索引正确，如"0,1,2..so on"

I load playlist from .wpl file into listbox. it shows me all items
but their index remains same "-1".
but when i drag items into listbox their index are proper like "0,1,2..so on"

推荐答案

，这可能是因为没有属性更改事件(INotifyPropertyChanged).如果没有更多信息，这是我首先要检查的内容.拖动时，UI便知道有更改.

This could be because there is no property changed event (INotifyPropertyChanged). Without more information, this is what I would first check. When you drag, then then the UI knows there is a change.

这篇关于wpf-mediaElement的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！