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POWPF datagrid Refresh when changes occurs at cell level
 

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  1. POWPF datagrid Refresh when changes occurs at cell level
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    <p>I have a Datagrid binded to an ObservabelCollection. The datagrid refresh very well when the changes are Add, remove ítems on the collection, but if i change a property of one Ítem on that collection, the grid doesn't refresh. </p> <p>Grid definition:</p> <pre><code> &lt;DataGrid x:Name="DatGridPlanillas" ItemsSource="{Binding ListaPlanillas,Mode=TwoWay}"&gt; &lt;DataGrid.Columns&gt; &lt;DataGridTextColumn Header="{x:Static resources:Labels.GENERAL_IdDocumeto}" Binding="{Binding StrIdDocumento,Mode=TwoWay}" ClipboardContentBinding="{x:Null}"/&gt; &lt;DataGridTextColumn Header="{x:Static resources:Labels.GENERAL_FechaCreacion}" Binding="{Binding DatFechaDocumento}" ClipboardContentBinding="{x:Null}"/&gt; &lt;/DataGrid.Columns&gt; &lt;/DataGrid&gt; </code></pre> <p>Changes </p> <pre><code>DocumentsBO MiGestorDeDocumentos = new DocumentsBO(db); foreach (MyEntity Doc in ListaPlanillas) { Documento DocumentoFinal = MiGestorDeDocumentos.NewDocIdByModule(_IntIdModulo); Doc.StrIdDocumento = DocumentoFinal.StrIdDocumento; Doc.IntIdDocumento = DocumentoFinal.IntIdDocumento; Doc.PlanillaAcopioGenerada = true; Doc.NumDocumentonumero = DocumentoFinal.NumDocumento; db.entry(Doc).State = EntityState.Modified; } </code></pre> <p>The only way I found is to empty original Collection and then restore it</p> <pre><code>db.SaveChanges(); ObservableCollection&lt;MyEntity&gt; _tmp = _ListaPlanillas; ListaPlanillas = new ObservableCollection&lt;MyEntity&gt;(); ListaPlanillas = _tmp; </code></pre> <p>But this sounds to me very ugly way to perform something so simple. How can i do to force the grid to update when just a property of collection was changed? </p>
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    1. USJuan Pablo Gomez
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    1. COWhat's the necessity to do changes in the way (I think) you are doing? Get the list from the db, wrap it in an observable collection, then you are done. That's how it normally works.
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      1. USShoe
    2. COI made some changes to the list programatically, just in some fields of each row, but the UI doesn't refresh that way.
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      1. USJuan Pablo Gomez
    3. COThe best way is as posted, implement `INotifyPropertyChanged` on your models. What you want to do is create partial classes in the same namespace of your entities models then write a notify handler in the setters. Rob didn't give you a good direction for that but [this question does that](http://stackoverflow.com/questions/11262816/partial-class-entity-framework-propertychanged). Yeah it will be a bit of boilerplate to set that up, but the good thing is that it will apply anywhere you use that model for databinding.
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      1. USShoe
 

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