hi,

    i have a xam data grid and i am adding field through code behind.there is a combo box in each column header(edited label presenter style).

how can i bind each column collection to its header combo box?..

my label presenter style is 

<Style x:Key="HeaderWithCombo" TargetType="{x:Type igDP:LabelPresenter}">
<Setter Property="Padding" Value="5,4,5,4" />
<Setter Property="Background" Value="White"/>
<Setter Property="LabelHighlight" Value="{DynamicResource {ComponentResourceKey {x:Type igDP:XamDataGrid}, LabelHighlight}}" />
<Setter Property="InnerBorderBrush" Value="{DynamicResource {ComponentResourceKey {x:Type igDP:XamDataGrid}, LabelInnerBorder}}" />
<Setter Property="OuterBorderBrush" Value="{DynamicResource {ComponentResourceKey {x:Type igDP:XamDataGrid}, LabelOuterBorder}}" />
<Setter Property="Foreground" Value="{DynamicResource {ComponentResourceKey {x:Type igDP:XamDataGrid}, LabelForeground}}"/>
<Setter Property="HorizontalContentAlignment"
Value="Left" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type igDP:LabelPresenter}">
<ControlTemplate.Resources>
<Storyboard x:Key="sbHighlightOff">
<DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="highlight">
<SplineDoubleKeyFrame Value="0" KeyTime="00:00:00.25"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
</ControlTemplate.Resources>

<Grid Background="White">
<Rectangle Stroke="{TemplateBinding OuterBorderBrush}" StrokeThickness="1" RadiusX="1.55015910897703" RadiusY="1.55015910897703"
Fill="Transparent" Margin="0,0,0,0" x:Name="lineOuter" Width="Auto" Height="Auto" />
<Rectangle Stroke="{TemplateBinding InnerBorderBrush}" StrokeThickness="1" RadiusX="0.550159108977027" RadiusY="0.550159108977027"
Fill="Transparent" Margin="1,1,1,1" x:Name="lineInner" Width="Auto" Height="Auto" />
<Grid Margin="{TemplateBinding Padding}"
HorizontalAlignment="Stretch"
VerticalAlignment="Stretch"
x:Name="sortIndicatorAndLabel">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<StackPanel Orientation="Horizontal" Grid.Column="0" >

<StackPanel Orientation="Horizontal" HorizontalAlignment="Stretch">

<ContentPresenter HorizontalAlignment="Left" x:Name="LabelContent" Focusable="False" Content="{Binding Path=Content,
RelativeSource={RelativeSource TemplatedParent}}" ContentTemplate="{TemplateBinding ContentTemplate}"
ContentTemplateSelector="{TemplateBinding ContentTemplateSelector}" VerticalAlignment="Center"/>

<igWindows:SortIndicator
x:Name="SortIndicator"
SortStatus="{TemplateBinding SortStatus}"
Visibility="Collapsed"
VerticalAlignment="Center"
Width="Auto"
HorizontalAlignment="Right"/>
</StackPanel>
<StackPanel Orientation="Horizontal" HorizontalAlignment="Stretch">

<Rectangle Width="1" Fill="Gray" Margin="2,2,0,2" ></Rectangle>

<ComboBox Style="{DynamicResource HeaderCombo}" HorizontalAlignment="Right" HorizontalContentAlignment="Right" Margin="1,0,0,0" Width="30" Background="Transparent" BorderBrush="{x:Null}">

<ComboBoxItem>Test -1</ComboBoxItem>
<ComboBoxItem>Test -1</ComboBoxItem>
<ComboBoxItem>Test -1</ComboBoxItem>
<ComboBoxItem>Test -1</ComboBoxItem>
<ComboBoxItem>Test -1</ComboBoxItem>
<ComboBoxItem>Test -1</ComboBoxItem>

</ComboBox>
</StackPanel>
</StackPanel>

</Grid>
</Grid>

<ControlTemplate.Triggers>
<DataTrigger Binding="{Binding Path=Field.LabelTextAlignmentResolved, RelativeSource={RelativeSource Self}}" Value="Center">
<Setter Property="HorizontalAlignment" TargetName="sortIndicatorAndLabel" Value="Center"/>
</DataTrigger>
<!-- HighlightPrimary -->

<Trigger Property="HorizontalAlignment" Value="Center">
<Setter Property="VerticalAlignment" TargetName="SortIndicator" Value="Top"/>
<Setter Property="HorizontalAlignment" TargetName="SortIndicator" Value="Center"/>
<Setter Property="Margin" TargetName="SortIndicator" Value="0,5,0,0"/>
</Trigger>

<!-- Only animate highlight -->
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsMouseOver" Value="True"/>
</MultiTrigger.Conditions>
<MultiTrigger.EnterActions>
</MultiTrigger.EnterActions>
<MultiTrigger.ExitActions>
</MultiTrigger.ExitActions>
</MultiTrigger>

<Trigger Property="SortStatus" Value="Ascending">
<Setter TargetName="SortIndicator" Property="Visibility" Value="Visible" />
</Trigger>
<Trigger Property="SortStatus" Value="Descending">
<Setter TargetName="SortIndicator" Property="Visibility" Value="Visible" />
</Trigger>
</ControlTemplate.Triggers>

</ControlTemplate>
</Setter.Value>
</Setter>
</Style>

thanks in advance....