c# - Binding a hierarchical data model to a DataGrid -

i have hierarchical data structure simple wpf application follows:

a tvshowcollection object contains tvshow objects. each tvshow object contains episodecollection object, in turn contains episode objects. model makes heavy use of inotifypropertychanged.

i need display list of of episode objects in grid, along name of tvshow.

if take of episodes structure , bind them itemssource of grid easy bind each property of episode column, how can bind 1 of columns related tvshow name property higher in hierarchy?

can flatten data somehow in viewmodel?

i hope makes sense.

thanks!

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edit:

thanks maw74656, want end result - of episodes in system displayed, tvshow details repeated in grid (airdate property of episode):

image here: http://i.stack.imgur.com/sy1ib.png

i have working now, degree, not in way particularly like. i've put property on viewmodel grid return object containing information need:

public class tvshowgridviewmodel : baseviewmodel {     private repository _repo;      private tvshowcollection _alltvshows;      public object alltvshows     {                 {             var flatlist = tvshow in _alltvshows                            episode in tvshow.episodes                            select new { tvshowname = tvshow.name, episodename = episode.name, episodenumber = episode.number, episodeairdate = episode.airdate };             return flatlist;         }     }      public tvshowgridviewmodel()     {         _repo = new repository("");         _alltvshows = _repo.tvshows;     } } 

but don't seem able make two-way binding. there better way?

try use objects instead of strings:

var flatlist = tvshow in _alltvshows                episode in tvshow.episodes                select new { tvshow = tvshow, episode = episode}; 

datagrid should have explicitly specified columns:

<sdk:datagridtextcolumn binding="{binding tvshow.name}" header="tv show"/> <sdk:datagridtextcolumn binding="{binding episode.name}" header="episode name"/>