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POBinding to WPF DataGrid cell value from within template
 

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  1. POBinding to WPF DataGrid cell value from within template
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    <p>I have a collection of custom data objects that I display in DataGrid. The columns are created dynamically on runtime. Some of the columns are TemplateColumns which display the value as a progressbar with respective text in the TextBlock; the brogressbar itself is defined from Style:</p> <pre class="lang-cs prettyprint-override"><code>private string CreateProgressBarColumnTemplate(string fieldName) { StringBuilder CellTemp = new StringBuilder(); CellTemp.Append("&lt;DataTemplate "); CellTemp.Append("xmlns='http://schemas.microsoft.com/winfx/"); CellTemp.Append("2006/xaml/presentation' "); CellTemp.Append("xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'&gt;"); CellTemp.Append(String.Format("&lt;ProgressBar Margin=\"0,1,0,0\" MinWidth=\"100\" MaxWidth=\"Infinity\" MaxHeight=\"Infinity\" Width=\"Auto\" Height=\"Auto\" HorizontalAlignment=\"Stretch\" VerticalAlignment=\"Stretch\" Value=\"{{Binding {0}}}\" Style=\"{{StaticResource ProgressBarStyle}}\"/&gt;", fieldName)); CellTemp.Append("&lt;/DataTemplate&gt;"); return CellTemp.ToString(); } private DataGridTemplateColumn CreateProgressBarTemplateColumn(string fieldName, string columnHeader) { DataGridTemplateColumn column = new DataGridTemplateColumn(); column.CanUserSort = true; column.CanUserResize = false; column.Header = columnHeader; column.CellTemplate = (DataTemplate)XamlReader.Parse(CreateProgressBarColumnTemplate(fieldName)); //display template return column; } </code></pre> <pre class="lang-xml prettyprint-override"><code>&lt;Style x:Key="ProgressBarStyle" TargetType="ProgressBar"&gt; &lt;Setter Property="Template"&gt; &lt;Setter.Value&gt; &lt;ControlTemplate TargetType="ProgressBar"&gt; &lt;Border BorderBrush="#BBC6C4" BorderThickness="1" CornerRadius="5" Padding="1"&gt; &lt;Grid x:Name="PART_Track" &gt; &lt;Rectangle x:Name="PART_Indicator" HorizontalAlignment="Left" RadiusX="5" RadiusY="5"&gt; &lt;Rectangle.Fill&gt; &lt;LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"&gt; &lt;GradientStop Color="#FF1D5666" Offset="1"/&gt; &lt;GradientStop Color="#FF09B6FF"/&gt; &lt;/LinearGradientBrush&gt; &lt;/Rectangle.Fill&gt; &lt;/Rectangle&gt; &lt;TextBlock FontFamily="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type DataGrid}}, Path=FontFamily}" FontSize="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type DataGrid}}, Path=FontSize}" FontWeight="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type DataGrid}}, Path=FontWeight}" TextAlignment="Center" Background="Transparent" DataContext="{TemplateBinding Value}" Foreground="{Binding Converter={StaticResource ValueToColor}}" x:Name="ProgressText" Margin="0,-3,0,0" Text="{Binding Converter={StaticResource DoubleToPercentage}}" /&gt; &lt;/Grid&gt; &lt;/Border&gt; &lt;/ControlTemplate&gt; &lt;/Setter.Value&gt; &lt;/Setter&gt; &lt;/Style&gt; </code></pre> <p>As you can see, the TextBlock DataContext is set to Value property of progressbar and the TextBlock.Text is set from it.</p> <p>The problem is that Value property can not be higher that MaxValue (Value seems to be set to MaxValue if I try assigning greater value), and my TextBlock.Text will always show 100% even if the actual cell value is greater than this.</p> <p>The problem is, how do I bind TextBlock.Text property to actual cell value (the property on my custom data object, which is dynamic) and not to a progressbar? </p>
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