Add extra items when using ItemsSource
c#, tabcontrol, wpf
Solution
You can use `CompositeCollection` (MSDN) to accomplish this:
<Window.Resources>
<CollectionViewSource x:Key="ExistingTabs" Source="{Binding ExistingTabs}"/>
</Window.Resources>
<TabControl>
<TabControl.ItemsSource>
<CompositeCollection>
<TabItem>SpecialItem</TabItem>
<CollectionContainer Collection="{Binding Source={StaticResource ExistingTabs}}"/>
</CompositeCollection>
</TabControl.ItemsSource>
</TabControl>
Problem
In the project I am building I have a `TabControl` in which I want to display a range of tabs through an `ItemsSource`. I also need to have a few "overview" tabs at the beginning of the `TabControl`, that cannot be located in `ItemsSource`. What is the best way to achieve this, the only way I can think of is to have my overview tabs in my XAML and to just add tab items manually through code instead of using `ItemSource` is this the best way to go about it.