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POWPF DataGrid: How do I access the DataRow a TextBox etc. resides in?
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  1. POWPF DataGrid: How do I access the DataRow a TextBox etc. resides in?
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    copied!<p>So I have columns defined like this:</p> <pre><code> &lt;DataGridTemplateColumn.CellTemplate&gt; &lt;DataTemplate&gt; &lt;TextBox Text="{Binding Path=COLUMN_NAME, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" /&gt; &lt;/DataTemplate&gt; &lt;/DataGridTemplateColumn.CellTemplate&gt; </code></pre> <p>TextBox isn't the only control that may exist in the DataTemplate for a column, I have DateTimePickers, ComboBoxes, etc.</p> <p>And what I want to do is define some style triggers like this that access some property in the DataRow:</p> <pre><code> &lt;Style TargetType="{x:Type TextBox}"&gt; &lt;Style.Triggers&gt; &lt;DataTrigger Binding="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type DataGridRow}}, Path=Row.RowState}" Value="Modified"&gt; &lt;Setter Property="Foreground" Value="LightGreen" /&gt; &lt;/DataTrigger&gt; &lt;/Style.Triggers&gt; &lt;/Style&gt; </code></pre> <p>Now unfortunately it would appear the TextBoxes are never logical children of DataGridRows. So what is the solution? Of course I can create a trigger that targets DataGridRows themselves, but this is redundant because setting the foreground property will do nothing (TextBoxes and other controls sit in front).</p> <p>Any help most appreciated. Fugu</p> <p>EDIT: Here is the solution I chose, because RowState does not notify its listeners and extending DataRow is problematic.</p> <p>1) Bind an event to the control(s) for when their data changes. 2) Refresh the Style to check for the RowState again:</p> <pre><code> Style s = ((TextBox)sender).Style; ((TextBox)sender).Style = null; ((TextBox)sender).Style = s; </code></pre> <p>Obviously it will be made more generic than that.</p> <p>edit 2: This blatantly won't work as I'd need to reset the style for each control individually, which even if it was possible would be a bad thing to do</p>
 

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