绑定到itemscontrol的UIElement集合，显示在画布中 [英] UIElement collection bound to itemscontrol, displayed in canvas

问题描述

嘿，我有一个ItemsControl，绑定了一个集合矩形UI元素.这些显示在画布的ItemsPanelTemplate中.我想知道是否可以在画布上的不同位置显示此集合中的矩形.

顺便说一句，我有能力在运行时添加矩形，并希望它们显示在画布中，但不能彼此重叠.

最终，我希望能够在画布上调整这些矩形的大小并将其拖动.

谢谢！

Hey, I have an ItemsControl with a collection rectangle UI elements bound to it. These are displayed in the ItemsPanelTemplate, in a canvas. I was wondering if it would be possible to display the rectangles in this collection at different points on the canvas.

BTW, I have the ability to add rectangles at runtime and want to have them show up in the canvas, but not on top of each other.

Eventually, I want to be able to resize and drag these rectangles around the canvas.

Thanks!

推荐答案

我通过将Point类型的"Position"属性添加到这些UI元素公开的ViewModel类中，解决了此问题.然后，按照此站点的说明，为我的ItemsControl ItemContainerStyle编写了一种样式，该样式将Canvas的Left/Top属性绑定到ViewModel中的属性:

I solved this problem by adding a "Position" property of type Point to the ViewModel class that these UI elements were exposing. I then wrote a style for my ItemsControl ItemContainerStyle that bound the Canvas''s Left/Top properties to the ones in the ViewModel, following instructions from this site: http://drwpf.com/blog/2008/03/25/itemscontrol-i-is-for-item-container/comment-page-1/#comment-2971[^]

Haven''t quite figured out how to update the ViewModel''s position when I drag these elements around the canvas.

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