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For some reason I am having a heck of a time getting my TabControl to display properly when binding the ItemsSource to a ObservableCollection of view models. I'm basing my design off of the tutorial found here: I did find a few questions like mine here but none addressed my particular situation. This is my TabControl in xaml.

<TabControl ItemsSource="{Binding Workspaces}"
            SelectedIndex="{Binding ActiveWorkspaceIndex}"
            ItemTemplate="{StaticResource ClosableTabItemTemplate}"/>

Where ClosableTabItemTemplate is the following.

<DataTemplate x:Key="ClosableTabItemTemplate">
        <DockPanel Width="120">
              Command="{Binding Path=CloseCommand}"
              Width="16" Height="16" 
              Content="{Binding Path=DisplayName}" 

Workspaces is the ObservableCollection of view models. ActiveWorkspaceIndex is just the active workspace index that I keep track of in the view model. I associate my view model with an instance of a view through the following data template in my App.xaml file.

<DataTemplate DataType="{x:Type vm:ViewModelStartPage}">

I only add one view model to my collection of workspaces. I see 2 views display in the tab control and they aren't tabbed. It's almost like the TabControl doesnt know to treat the different views as TabItems, its behaving more like a stack panel, stacking the views. If I create the tab items in code it works fine like this:

System.Windows.Controls.TabItem i = new System.Windows.Controls.TabItem();
i.Content = new Views.ViewStartPage();
i.Header = "A Tab Item";

The C# code above is what I want to accomplish through binding the view models.

I must be missing some content template or something. I will be styling my tabs later but for now I would be happy just getting the basic tabs working. Also the views in the tab contents may be different for each tab so I can't use the simple textblock TabControl template examples I see all over the place... I.e. not this...

           Text="{Binding Content}" />

Any ideas?
Posted 23-Dec-12 11:46am
Updated 23-Dec-12 12:02pm

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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