Using Two GroupDescriptions on a ListView

Question

I have a listbox which contains a collection of Photos. The photos are currently Grouped by the Date they were taken. E.g.:

---03/09/14

03/09/14 photo 1,

03/09/14 photo 2,

03/09/14 photo 3,

--02/09/14

02/09/14 Photo 1

02/09/14 Photo 2

Xaml:

<CollectionViewSource x:Key="cvs" Source="{Binding FilteredPhotoFiles}">
   <CollectionViewSource.GroupDescriptions>
       <PropertyGroupDescription PropertyName="PhotoMetaData.DateTaken" Converter="{StaticResource DateTimeConverter}"/>
   </CollectionViewSource.GroupDescriptions>
</CollectionViewSource>

But now I would like to add a Favourited Group. I have a List<Photos> and List<FavouritedPhotos> But is there any way that favorited photos can override the group collection. E.g.

--Favourited

03/09/14 photo 2,

02/09/14 Photo 1

---03/09/14

03/09/14 photo 1,

03/09/14 photo 3,

--02/09/14

02/09/14 Photo 2

score 0 · Accepted Answer · answered Sep 12 '14 at 10:52

This was possible using help from this link

I edited the Xaml to read

<CollectionViewSource x:Key="cvs" Source="{Binding FilteredPhotoFiles}">
   <CollectionViewSource.GroupDescriptions>
       <PropertyGroupDescription PropertyName="Favourited"/>
       <PropertyGroupDescription PropertyName="PhotoMetaData.DateTaken" Converter="{StaticResource DateTimeConverter}"/>
   </CollectionViewSource.GroupDescriptions>
</CollectionViewSource>

where favourited was a boolean property on my ViewModel

Using Two GroupDescriptions on a ListView

1 Answers1