How to bind GridViewColumn's DisplayMemberBinding in code

Question

I have a MultiColumn TreeView which uses a GridViewColumnCollection. I my situation, I don't know how many columns will be there, nor their header names. That's discovery at run time.

Hence I have need to create these columns in code and bind dynamically to them.

Okay - creation is simple enough:

GridViewColumn c = new GridViewColumn();
c.Header = "Next Column";
myTree.Columns.Add(c);

Now where I stumble - Suppose I wish to bind to my viewModel's "MyName" property:

Binding myBinding = new Binding(??);
myBinding.Source = ??
BindingOperations.SetBinding(myTree,GridViewColumn.????  , myBinding);

Now the template for this

 <DataTemplate x:Key="CellTemplate_Name">
        <DockPanel>
            <ToggleButton x:Name="Expander"
                          Margin="{Binding Level,
                                           Converter={StaticResource LevelToIndentConverter},
                                           RelativeSource={RelativeSource AncestorType={x:Type l:TreeListViewItem}}}"
                          ClickMode="Press"
                          IsChecked="{Binding Path=IsExpanded,
                                              RelativeSource={RelativeSource AncestorType={x:Type l:TreeListViewItem}}}"
                          Style="{StaticResource ExpandCollapseToggleStyle}" />
            <TextBlock Text="{Binding Name}" />
.                
.
.
    <Style TargetType="{x:Type l:TreeListViewItem}">
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type l:TreeListViewItem}">
                    <StackPanel>
                        <Border Name="Bd"
                                Background="{TemplateBinding Background}"
                                BorderBrush="{TemplateBinding BorderBrush}"
                                BorderThickness="{TemplateBinding BorderThickness}"
                                Padding="{TemplateBinding Padding}">
                            <GridViewRowPresenter x:Name="PART_Header"
                                                  Columns="{Binding Path=Columns,
                                                                    RelativeSource={RelativeSource AncestorType={x:Type l:TreeListView}}}"
                                                  Content="{TemplateBinding Header}" />
                        </Border>
                        <ItemsPresenter x:Name="ItemsHost" />
                    </StackPanel>

Where column insertion and binding in XAML appears as:

    <l:TreeListView x:Name="myTree" ItemsSource="{Binding MySource}">
    <l:TreeListView.Columns>
        <GridViewColumn x:Name="GridViewColumn0" CellTemplate="{StaticResource CellTemplate_Name}" 
                        Header="Name" />
        <GridViewColumn Width="60"
                        DisplayMemberBinding="{Binding Description}"
                        Header="Description" />

Any help with SetBinding here would be greatly appreciated. I've searched till my fingers fell off.

Update: Excellent answer:

        GridViewColumn c = new GridViewColumn();
        c.Header = "Next Column";
        myTree.Columns.Add(c);

        Binding myBinding = new Binding("MyName"); 
        myBinding.Source = viewModel;
        BindingOperations.SetBinding(myTree.Columns[myTree.Columns.Count - 1], 
            GridViewColumn.HeaderProperty, 
            myBinding);

The binding now works against the Header perfectly - thank you so much.

Answer 1

(Extracting an answer from comments:)

You can set the binding manually with the code like this:

Binding myBinding = new Binding("MyName");
myBinding.Source = viewModel;
BindingOperations.SetBinding(myTree.Columns[i], GridViewColumn.HeaderProperty, myBinding);

where i is the number of column.

For setting the DisplayMemberBinding, a simpler code can be used:

Binding descriptionBinding = new Binding("Description");
myTree.Columns[i].DisplayMemberBinding = descriptionBinding;