Question

What is the best way to hide Tab headers when there is only a single visible Tab?

I want to hide TabControl chrome completely, while leaving the content of the Tab visible.

Answer 1

You can use a Style applied to TabItem with a DataTrigger that will collapse it if the parent TabControl has only one item:

<Grid xmlns='http://schemas.microsoft.com/winfx/2006/xaml/presentation'       xmlns:sys='clr-namespace:System;assembly=mscorlib'       xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'>     <Grid.Resources>         <x:Array x:Key='tabData' Type='{x:Type sys:String}'>             <sys:String>do</sys:String>             <sys:String>re</sys:String>             <sys:String>mi</sys:String>         </x:Array>     </Grid.Resources>     <TabControl ItemsSource='{StaticResource tabData}'>         <TabControl.ItemContainerStyle>             <Style TargetType='{x:Type TabItem}'>                 <Style.Triggers>                     <DataTrigger Binding='{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type TabControl}}, Path=Items.Count}' Value='1'>                         <Setter Property='Visibility' Value='Collapsed'/>                     </DataTrigger>                 </Style.Triggers>                             </Style>         </TabControl.ItemContainerStyle>     </TabControl> </Grid> 

If you want to get rid of the TabControl completely if there is only one item, that logic should probably be at a higher level.