With MVVM,how is one viewmodel shared by multi-views

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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.

Posted 12-Sep-11 19:49pm

eric881027

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Simon Bang Terkildsen · Answer 1 · 2011-09-13T03:40:00

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.

Graeme_Grant · Answer 2 · 2011-09-14T19:28:00

Solution 2

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

Posted 14-Sep-11 19:28pm

Graeme_Grant

sasolanki007 · Answer 3 · 2011-09-26T00:18:00

Solution 3

Use following for your views :

C#

this.DataContext = ViewModelName();

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

-Sagar Solanki

Posted 26-Sep-11 0:18am

sasolanki007