My tree shows only one icon for all nodes:
<TreeView Name="TreeView" Grid.Column="0"><TreeView.Resources><Style TargetType="{x:Type TreeViewItem}"><Setter Property="HeaderTemplate"><Setter.Value><DataTemplate><StackPanel Orientation="Horizontal"><Image Name="img" Width="16" Height="16" Stretch="Fill" Source="green.png"/><TextBlock Text="{Binding}" /></StackPanel></DataTemplate></Setter.Value></Setter></Style></TreeView.Resources></TreeView>How obtain different images? I must use item.Tag?