如何根据ICollectionView过滤结果更新UI？
我有两个控件 - SearchFilter 和 SearchResult。过滤器包含带有过滤结果命令的按钮。结果控件有一个 ListView，它绑定到 ICollectionView 属性。
<ListView ItemsSource="{Binding SearchList}">
我的带有过滤器逻辑的模型视图：
private void FilterTheResults()
{
var list = (ListCollectionView) SearchList;
list.Filter = x => ((SearchItem)x).Type == "Video";
}
问题如下：
如果我将带有命令的按钮从筛选器控件移动到结果控件，则我的 UI 会在每次筛选器操作后更新。但我想把这些事情分开。我尝试在 FilterTheResults() 中使用 SearchList.Refresh() 和 PropertyChanged 但没有成功。
I have two controls - SearchFilter and SearchResult. Filter contains buttons with commands to filter results. Result control has a ListView with a binding to ICollectionView property.
<ListView ItemsSource="{Binding SearchList}">
my modelview with filter logic:
private void FilterTheResults()
{
var list = (ListCollectionView) SearchList;
list.Filter = x => ((SearchItem)x).Type == "Video";
}
The problem is as follows:
If I move buttons with commands from the filter control to the result one, my UI is updated after each filter action. But I want to keep these things separate. I have tried to use SearchList.Refresh() and PropertyChanged in FilterTheResults() without success.
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编者注：@Yevhen Martynov 编辑了他在问题中找到的答案。我把它放在这里作为答案。
解决方案是两个控件的视图模型的一个实例（通过
Window的DataContext）。Editor's note: @Yevhen Martynov edited the answer he found into his question. I put it here as an answer instead.
The solution is the one instance of viewmodel for both controls (through
DataContextofWindow).