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Wpf dragdrop,如何在拖动过程中直观地拒绝掉落?

在Wpf中拖动期间,如何更改鼠标光标(或者可能使用装饰器)以指示droptarget不接受拖动的项目?

我试图e.Effects = DragDropEffects.NoneDragEnter活动期间设置,但这不起作用,我怀疑我误解了应该使用的功能.我已经尝试过使用这个GiveFeedback事件但是没有看到droptarget它如何影响它.

是否有任何教程可以解决droptargetWpf中的拒绝问题?

wpf drag-and-drop cursor

5
推荐指数
1
解决办法
5094
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Bind a Wpf HierarchicalDataTemplate ItemsSource to a CollectionViewSource in a dictionary?

I'm trying to display a Wpf Treeview with items sorted by a CollectionViewSource.

Currently, everything is working except sorting using this code in my resource dictionary:

<HierarchicalDataTemplate DataType="{x:Type books:Container}" ItemsSource="{Binding Path=Items}">
    <nav:ContainerControl />
</HierarchicalDataTemplate>
Run Code Online (Sandbox Code Playgroud)

What would be the syntax for changing the HierarchicalDataTemplate to bind to a CollectionViewSource that in turn pulls from the Items property?

I've tried variations of the code posted on Bea Stollnitz's blog with no success. I can't figure out how to set the source of …

data-binding wpf hierarchicaldatatemplate collectionviewsource

3
推荐指数
1
解决办法
4691
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