问题
I am looking for a way to reorder the content (items) of a WPF WrapPanel via drag and drop. I just want to click on an item and drag it to a new position.
To my understanding this is a very common task and I wonder I someone already did this or has any idea how to implement this functionality.
I did a google search already but found nothing. Maybe it is more difficult than I expected.
回答1:
I've written a library which may help: default behaviour is to allow re-ordering within the same control:
http://code.google.com/p/gong-wpf-dragdrop/
Ah I notice you're talking about just a WrapPanel: you'll need to use an ItemsControl with a WrapPanel:
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<WrapPanel />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
回答2:
A wrap panel won't give you the functionality you are looking for since it is just for layout. Instead look at adding the drag and drop functionality to a ListBox and change the ItemsPanelTemplate of that ListBox to use a wrap panel.
- Changing a list box to use a Wrap Panel
- Library for Drag and drop (from Groky's answer)
来源：https://stackoverflow.com/questions/2108712/wpf-reorder-wrappanel-content-via-drag-and-drop