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POLINQ: Concating two lists and creating a new one doesnt seem to be bindable
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  1. POLINQ: Concating two lists and creating a new one doesnt seem to be bindable
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    copied!<p>I'm trying to concat two lists and get a new anonymous one, then binding the one to a grid in silverlight for an app:</p> <pre><code> var lst = from games in AppLogic.CurrentApp.GAMES.Entities from playedGames in AppLogic.CurrentApp.PLAYEDGAMES.Entities.Where(f =&gt; f.GameID == games.ID).DefaultIfEmpty() select new { ID = games.ID, Date = games.Date, MaxPoints = games.MaxPoints }; dgGames.ItemsSource = lst; </code></pre> <p>But I always get a nullreferenceexception. I've seen this syntax in another stackoverflow thread (sadly I didnt marked the url), but it doesnt seem to work this way. Am I doing something fundamentally wrong or can't I just bind the new list like this? </p> <p>The binding is like this:</p> <pre><code> &lt;Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0"&gt; &lt;data:DataGrid x:Name="dgGames"&gt; &lt;data:DataGrid.Columns&gt; &lt;data:DataGridTextColumn Visibility="Collapsed" Binding="{Binding ID}" /&gt; &lt;data:DataGridTextColumn Header="Datum" Binding="{Binding Date}" /&gt; &lt;data:DataGridTextColumn Header="Punkte" Binding="{Binding MaxPoints}" /&gt; &lt;!--&lt;data:DataGridTextColumn Header="Gewinner" Binding="{Binding Winner}" /&gt;--&gt; &lt;/data:DataGrid.Columns&gt; &lt;/data:DataGrid&gt; &lt;/Grid&gt; </code></pre> <p>P.S.: As you can see I'm not even taking data from the left joined "PlayedGames", but it doesnt seem to work still.</p> <p>Sorry in advance if there is something stupid wrong. I tinkered the code from some examples I found, so I cant be sure if they are even working.</p> <p>Thanks alot for all answers!</p> <p>Matthias</p>
 

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