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POProblem with DataTemplate and ObjectDataProvider refresh
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  1. POProblem with DataTemplate and ObjectDataProvider refresh
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    copied!<p>I have a problem with a edit templete of cell in a WPF datagrid (WPF Toolkit). The template is builded with a ComboBox and the ItemsSource of ComboBox are loaded at runtime.</p> <p>This is the mean code...</p> <pre><code>&lt;ObjectDataProvider x:Key="dataValuesProvider" MethodName="GetValues" /&gt; &lt;toolkit:DataGrid ItemsSource="{Binding Path=MyItems}"&gt; &lt;toolkit:DataGridTemplateColumn Header="Property1"&gt; &lt;toolkit:DataGridTemplateColumn.CellTemplate&gt; &lt;DataTemplate&gt; &lt;TextBlock Text="{Binding Path=Property1, ValidatesOnDataErrors=true}"/&gt; &lt;/DataTemplate&gt; &lt;/toolkit:DataGridTemplateColumn.CellTemplate&gt; &lt;toolkit:DataGridTemplateColumn.CellEditingTemplate&gt; &lt;DataTemplate&gt; &lt;ComboBox SelectedValue="{Binding Path=Property1, UpdateSourceTrigger=PropertyChanged, ValidatesOnDataErrors=True}" IsEditable="True" IsSynchronizedWithCurrentItem="False" ItemsSource="{Binding Source={StaticResource dataValuesProvider}, Mode=OneWay}" /&gt; &lt;/DataTemplate&gt; &lt;/toolkit:DataGridTemplateColumn.CellEditingTemplate&gt; &lt;/toolkit:DataGridTemplateColumn&gt;&lt;/toolkit:DataGrid&gt; </code></pre> <p>Now, I have this problem. </p> <p>I have to update the dataValuesProvider with different value on each rows. Then I have insert a reset of dataValuesProvider (dataValuesProvider=null) on selectionchanged event of datagrid.</p> <p>(The dataValuesProvider will load after a input on a specific cell of the selected row).</p> <p>This is the problem: when I reset the dataValuesProvider (on selectionchanged of a new row) it's modified the SelectedValue of ComboBox and the Property1 of previous row is cleared.</p> <p>I think that there is this behavior becouse the editing template of cell not update the binding associations until I edit the cell. It's right?</p> <p>How can I do to avoid this problem?</p>
 

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