Binding textbox in ListView's header datatemplate to a filter property

I am creating a customized listview header that has the header text but also has a textbox that you can enter to filter the content of that column. My code currently looks like this:

<UserControl.Resources>
        <DataTemplate x:Key="myHeaderTemplate">
            <StackPanel>
                <TextBlock FontSize="14" Foreground="DarkBlue" Margin="20,4" Text="{Binding}" />
                <TextBox Text="" Margin="4,2" />
            </StackPanel>
        </DataTemplate>
</UserControl.Resources>

which is the definition for the header datatemplate containing the texbox; and the listview

<ListView ItemsSource="{Binding Path=MyData}" IsSynchronizedWithCurrentItem="True">
    <ListView.View>
        <GridView>
            <GridViewColumn Header="Last Name" HeaderTemplate="{StaticResource myHeaderTemplate}"
                            DisplayMemberBinding="{Binding Path=Something}开发者_运维百科" />
            <GridViewColumn Header="First Name" HeaderTemplate="{StaticResource myHeaderTemplate}" 
                            DisplayMemberBinding="{Binding Path=Something}" />
            <GridViewColumn Header="Address" HeaderTemplate="{StaticResource myHeaderTemplate}" 
                            DisplayMemberBinding="{Binding Path=Tube}" />
        </GridView>
    </ListView.View>
</ListView>

I want to be able to build up a filter statement that I can apply to the listview rows, but to do that I have to get the data from each filter textbox in the header template.

Can I somehow bind the textboxes in the headers to properties on my viewmodel? If not is there some other way to get the text?

Thanks for any help.

You should be able to bind the header to a property like this:

<GridViewColumn 
    Header="{Binding LastNameFilter, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type ListView}}}" 
    HeaderTemplate="{StaticResource myHeaderTemplate}"
    DisplayMemberBinding="{Binding Path=Something}" />

The RelativeSource is needed to get to the DataContext of the ListView - you could also give it a name and use ElementName instead.

Now you can make a HeaderFilter class:

public class HeaderFilter
{
    public string Name { get; set; }
    public string Filter { get; set; }
}

Obviously you would need to extend that class to hook into the event when Filter is changed to perform the filtering.

Put a property for each column header on the object which is the DataContext for your ListView (same object which provides MyData probably)

public class SomeClass
{
    ....
    public HeaderFilter LastNameFilter { get; set; }
    ....
}