如何在Prism/MEF中的ItemsControl中对视图进行排序? [英] How to sort views in an ItemsControl in Prism / MEF?

问题描述

我使用棱镜v4和MEF加载模块.我的模块包含少数视图(MVVM)，这些视图由MEF自动加载到ItemsControl/NavigationRegion中.

I use prism v4 and MEF to load my modules. My modules contain a handful of views (MVVM) which are loaded in a ItemsControl/NavigationRegion automatically by MEF.

这很好用，所有项目都显示在ItemControl中.但是我不喜欢它们显示的顺序.一个模块可能包含多个项目，因此仅靠更改模块加载顺序是不够的.

This works nicely, all items show up in the ItemControl. But I don't like the order in which they show. One module might contain several of the items, so changing the module load order is not enough by itself.

如何在ItemsControl中对不同的视图进行排序?有什么办法可以按某种属性对它们进行排序吗?

How can I sort the different views in the ItemsControl? Is there any way to sort them by some property?

由于使用了StockTraderRI示例中的属性，因此我使用了棱镜V4，MEF和勘探.

I use prism V4, MEF and exploration due to attributes like in the StockTraderRI example.

推荐答案

这实际上已植入Prism4.只需将ViewSortHintAttribute应用于您的视图即可:

This is actually baked into Prism4. Just apply the ViewSortHintAttribute to your views:

[ViewSortHint("100")]
class FirstView : UserControl { }

[ViewSortHint("200")]
class SecondView : UserControl { }

区域上的默认排序比较器将选择此属性并相应地对视图进行排序.您可以将任何字符串放入属性中，但是我倾向于使用中等大小的数字，这样我就可以轻松地在现有视图之间放置新视图.

The default sort comparer on the regions will pick up this attribute and sort the views accordingly. You can put any string into the attribute but I tend to use medium sized numbers that allow me to easily put a new view in between existing ones.

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