Frozen columns in TreeView

Question

Hi All,
I have a TreeView in WPF with multiple columns.
I wanted to make first column "Name" as frozen.
I am adding more columns dynamically from the code behind.
TreeView:
<ScrollViewer Grid.Row="1" VerticalScrollBarVisibility="Auto" HorizontalScrollBarVisibility="Auto">
<src:TreeListView x:Name="TreeView" Background="White" ItemsSource="{Binding SelectedZones}" SelectedValuePath="{Binding SelectedValue}" PreviewMouseRightButtonDown="OnPreviewMouseRightButtonDown" >
<src:TreeListView.Columns>
<GridViewColumn Header="Name" CellTemplate="{StaticResource CellTemplateName}" Width="200"/>
</src:TreeListView.Columns>
<src:TreeListView.Resources>
<Style TargetType="{x:Type src:TreeListViewItem}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type src:TreeListViewItem}">
<StackPanel>
<Border Name="Bd" Background="White" BorderBrush="White" BorderThickness="0" Padding="{TemplateBinding Padding}">
<GridViewRowPresenter x:Name="PART_Header"
Content="{TemplateBinding Header}"
Columns="{Binding Path=Columns, RelativeSource={RelativeSource AncestorType={x:Type src:TreeListView}}}" />
</Border>
<ItemsPresenter x:Name="ItemsHost"/>
</StackPanel>
<ControlTemplate.Triggers>
<Trigger Property="IsExpanded" Value="false">
<Setter TargetName="ItemsHost" Property="Visibility" Value="Collapsed"/>
</Trigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="HasHeader" Value="false"/>
<Condition Property="Width" Value="Auto"/>
</MultiTrigger.Conditions>
<Setter TargetName="PART_Header" Property="MinWidth" Value="75"/>
</MultiTrigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="HasHeader" Value="false"/>
<Condition Property="Height" Value="Auto"/>
</MultiTrigger.Conditions>
<Setter TargetName="PART_Header" Property="MinHeight" Value="19"/>
</MultiTrigger>
<Trigger Property="IsSelected" Value="true">
<Setter TargetName="Bd" Property="Background" Value="{DynamicResource TreeViewItemBackgroundBrush}"/>
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.HighlightTextBrushKey}}"/>
</Trigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="IsSelected" Value="true"/>
<Condition Property="IsSelectionActive" Value="false"/>
</MultiTrigger.Conditions>
<Setter TargetName="Bd" Property="Background" Value="{DynamicResource TreeViewItemBackgroundBrush}"/>
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.ControlTextBrushKey}}"/>
</MultiTrigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<Setter Property="IsExpanded" Value="True"/>
<Setter Property="ItemsPanel">
<Setter.Value>
<ItemsPanelTemplate>
<src:MyVirtualizingStackPanel/>
</ItemsPanelTemplate>
</Setter.Value>
</Setter>
</Style>
</src:TreeListView.Resources>
<src:TreeListView.ItemTemplate>
<HierarchicalDataTemplate DataType="{x:Type businessObjects:Zone}" ItemsSource="{Binding Children}"/>
</src:TreeListView.ItemTemplate>
</src:TreeListView>
Code for adding columns:
foreach (var field in zone.Types)
TreeView.Columns.Add(new GridViewColumn()
Width = 100,
Header = field.Value.HeaderString,
CellTemplate = GetDataTemplate(count)
count++;
do any anybody know how to do this ?
Thanks
Ashish Dhyani

Answer 1

When you say freeze.
You mean the first column stays there and the others scroll if it's too wide?
You could
Re template whatever you have there and make the first column separate from the rest.
As I don't really understand what you're using I have no idea how viable that would be. 
Or
Use two controls.
That'll be tricky.
or
Use a Listview within a listview and put the extra columns inside the first but with a slider just on them.
or
Use a datagrid and grouping instead.
With that all the contents of a group go inside a thing for the header.
You can change the markup to that to whatever you like.
I'm not saying it'd be easy.
I don't think there is an easy answer though.
Please don't forget to upvote posts which you like and mark those which answer your question.
My latest Technet article - Dynamic XAML