使用MVVM，多视图如何共享一个视图模型 [英] With MVVM,how is one viewmodel shared by multi-views

问题描述

作为标题，我想要一个由几个视图共享的视图模型。我只想要在内存中创建一个副本，使每个视图都可以使用相同的属性。

As the title, I want one viewmodel shared by Several views. And I just want a copy created in the memory,sothat each view can use the same property.

推荐答案

你的问题很广泛，缺乏很多细节。所以我不能回答问题，但我可以告诉你我想要做什么。



如果多个视图属于同一类型，例如Visual Studio中的C＃编辑器。

我会在我的主ViewModel中公开 CsharpDocuments 的集合，例如 ObservableCollection< CsharpDocument> 然后将该集合绑定到 ItemsControl 。



如果视图的类型不同，我会在mainViewModel中为这些视图的每个ViewModel创建一个属性，然后将视图的DataContext绑定到相应的属性。

Your question is very broad, and lacks a lot of details. So I cannot answer question, but I can give tell you want I would do.

If the multiple views are of the same type, e.g. C# editor in Visual Studio.
I would in my "main" ViewModel expose a collection of CsharpDocuments e.g. ObservableCollection<CsharpDocument> and then bind that collection to an ItemsControl.

If the views are of different type I would have a property in my "main" ViewModel for each ViewModel for those views and then bind the DataContext of the views to the appropriate property.

MVVM Light工具包将执行您想要的操作。 Laurent在他的样本中使用的ViewModel定位器可以解决问题！



http： //www.galasoft.ch/mvvm

The MVVM Light toolkit will do what you want. The ViewModel Locator that Laurent uses in his samples will do the trick!

http://www.galasoft.ch/mvvm

使用以下条目查看：

Use following for your views :

this.DataContext = ViewModelName();

you可以在很多页面中访问相同的视图模型。



-Sagar Solanki

you can access the same view-model in many pages.

-Sagar Solanki

这篇关于使用MVVM，多视图如何共享一个视图模型的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！