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    <p>We do something similar in our app.</p> <p>What i have done is derived my own column type (DataGridSearchableBooleanColumn), then i replace the DataGridColumnHeader template, i put two content presenters in there. the first i bind to the content (the same as the default template) the second i bind to the column. I use a data template for the column (i have a few of them for different search types (text, combo, boolean). then i add the extra properties to the column so i can bind to them. See if this code makes sense.</p> <pre><code> &lt;!--Style for the datagrid column headers, contains a text box for searching--&gt; &lt;Style x:Key="columnHeaderStyle" TargetType="dg:DataGridColumnHeader"&gt; &lt;Setter Property="Foreground" Value="#FF000000" /&gt; &lt;Setter Property="HorizontalContentAlignment" Value="Left" /&gt; &lt;Setter Property="VerticalContentAlignment" Value="Center" /&gt; &lt;Setter Property="IsTabStop" Value="False" /&gt; &lt;Setter Property="Padding" Value="1,2,1,2" /&gt; &lt;Setter Property="Template"&gt; &lt;Setter.Value&gt; &lt;ControlTemplate TargetType="dg:DataGridColumnHeader"&gt; &lt;Grid x:Name="Root"&gt; &lt;dg:DataGridHeaderBorder Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Padding="{TemplateBinding Padding}" IsClickable="{TemplateBinding CanUserSort}" IsHovered="{TemplateBinding IsMouseOver}" IsPressed="{TemplateBinding IsPressed}" SeparatorBrush="{TemplateBinding SeparatorBrush}" SeparatorVisibility="{TemplateBinding SeparatorVisibility}" SortDirection="{TemplateBinding SortDirection}"&gt; &lt;Grid HorizontalAlignment="Stretch" Margin="{TemplateBinding Padding}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"&gt; &lt;Grid.Resources&gt; &lt;DataTemplate DataType="{x:Type local:DataGridSearchableBooleanColumn}"&gt; &lt;CheckBox Margin="0,5,0,0" IsThreeState="True" IsChecked="{Binding Path=IsChecked}" /&gt; &lt;/DataTemplate&gt; &lt;/Grid.Resources&gt; &lt;Grid.ColumnDefinitions&gt; &lt;ColumnDefinition /&gt; &lt;ColumnDefinition Width="Auto" /&gt; &lt;/Grid.ColumnDefinitions&gt; &lt;Grid.RowDefinitions&gt; &lt;RowDefinition Height="19" /&gt; &lt;RowDefinition Height="Auto" /&gt; &lt;/Grid.RowDefinitions&gt; &lt;ContentPresenter Content="{Binding RelativeSource={RelativeSource TemplatedParent}, Mode=OneWay, Path=Content}" /&gt; &lt;Path x:Name="SortIcon" Fill="#FF444444" Stretch="Uniform" HorizontalAlignment="Left" Margin="4,0,0,0" VerticalAlignment="Center" Width="8" Opacity="0" RenderTransformOrigin=".5,.5" Grid.Column="1" Data="F1 M -5.215,6.099L 5.215,6.099L 0,0L -5.215,6.099 Z "&gt; &lt;Path.RenderTransform&gt; &lt;ScaleTransform ScaleX=".9" ScaleY=".9" /&gt; &lt;/Path.RenderTransform&gt; &lt;/Path&gt; &lt;ContentPresenter x:Name="columnHeaderContentPresenter" Content="{Binding RelativeSource={RelativeSource TemplatedParent}, Path=Column}" Grid.Row="1" Grid.ColumnSpan="2" Margin="0,0,0,0" /&gt; &lt;/Grid&gt; &lt;/dg:DataGridHeaderBorder&gt; &lt;Thumb x:Name="PART_LeftHeaderGripper" HorizontalAlignment="Left"&gt; &lt;Thumb.Style&gt; &lt;Style TargetType="{x:Type Thumb}"&gt; &lt;Setter Property="Width" Value="8" /&gt; &lt;Setter Property="Background" Value="Transparent" /&gt; &lt;Setter Property="Cursor" Value="SizeWE" /&gt; &lt;Setter Property="Template"&gt; &lt;Setter.Value&gt; &lt;ControlTemplate TargetType="{x:Type Thumb}"&gt; &lt;Border Background="{TemplateBinding Background}" Padding="{TemplateBinding Padding}" /&gt; &lt;/ControlTemplate&gt; &lt;/Setter.Value&gt; &lt;/Setter&gt; &lt;/Style&gt; &lt;/Thumb.Style&gt; &lt;/Thumb&gt; &lt;Thumb x:Name="PART_RightHeaderGripper" HorizontalAlignment="Right"&gt; &lt;Thumb.Style&gt; &lt;Style TargetType="{x:Type Thumb}"&gt; &lt;Setter Property="Width" Value="8" /&gt; &lt;Setter Property="Background" Value="Transparent" /&gt; &lt;Setter Property="Cursor" Value="SizeWE" /&gt; &lt;Setter Property="Template"&gt; &lt;Setter.Value&gt; &lt;ControlTemplate TargetType="{x:Type Thumb}"&gt; &lt;Border Background="{TemplateBinding Background}" Padding="{TemplateBinding Padding}" /&gt; &lt;/ControlTemplate&gt; &lt;/Setter.Value&gt; &lt;/Setter&gt; &lt;/Style&gt; &lt;/Thumb.Style&gt; &lt;/Thumb&gt; &lt;/Grid&gt; &lt;/ControlTemplate&gt; &lt;/Setter.Value&gt; &lt;/Setter&gt; &lt;/Style&gt; </code></pre>
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    1. POWPF Datagrid binding custom column headers
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    1. USAran Mulholland
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    1. COThis is interesting, but I'm not sure it solves my problem. I too have created a new custom column and am overriding OnAutoGeneratingColumn and replacing the existing column with my custom version. Your system seems to work, but I think you need to loop through the columns to get the data, whereas I'm trying to bind to an external data source using the MVVM pattern. If I could get the index of the current column, I think I'd have a solution using a second data source.
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      1. USBrian Vallelunga
    2. COthis is where the grid falls down, its not totally do-able in an mvvm pattern because the columns collection is read only (you can add remove but not set) I subclass the grid, give it an extra property that is an interface, then bind this to my view model. then let it manages the columns in code. Another solution is to subclass the grid give it another columns collection that you can bind to and watch for changes on this to add/remove your columns. (then your view model could bind directly)
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      1. USAran Mulholland
 

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