C# 在 ItemsControl DataTemplate 中设置 Canvas 属性
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Setting Canvas properties in an ItemsControl DataTemplate
提问by atsjoo
I'm trying to databind to this ItemsControl:
我正在尝试对此进行数据绑定ItemsControl：
<ItemsControl ItemsSource="{Binding Path=Nodes, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}">
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<Canvas />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
</ItemsControl>
By using this DataTemplate, I'm trying to individually position my Nodeelements on the Canvascorrectly:
通过使用 this DataTemplate，我试图将我的Node元素单独放置在Canvas正确的位置：
<DataTemplate DataType="{x:Type Model:EndNode}">
<Controls:EndNodeControl Canvas.Left="{Binding Path=XPos}" Canvas.Top="{Binding Path=YPos}" />
</DataTemplate>
However, it's not working as expected. All my node elements are drawn on top of each other in the same position. Any suggestions on how to accomplish this?
但是，它没有按预期工作。我所有的节点元素都在相同的位置相互叠加。关于如何实现这一点的任何建议？
采纳答案by Arcturus
The attached properties only work on direct children of the Canvas. ItemsControlwill place ContentPresentercontrols as its direct children, so you might want to add a style for that as well:
附加属性仅适用于Canvas. ItemsControl将ContentPresenter控件作为其直接子项，因此您可能还想为此添加样式：
<ItemsControl ItemsSource="{Binding Path=Nodes}">
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<Canvas />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<ItemsControl.ItemContainerStyle>
<Style TargetType="ContentPresenter">
<Setter Property="Canvas.Left" Value="{Binding Path=XPos}" />
<Setter Property="Canvas.Top" Value="{Binding Path=YPos}" />
</Style>
</ItemsControl.ItemContainerStyle>
</ItemsControl>
