I have a Collection of Model-objects in my ViewModel. I would like to be able to bind a TabControl to these and use a DataTemplate to extract the information from the Model-objects. When I try to do this I get the errormessage: Unable to cast object of type Model to object of type TabItem. After spending some time looking for a solution I found the following:
The Silverlight TabControl is broken. Use a combination of ListBox and ContentControl to mimic the behaviour of a TabControl. (Means that I have to skin the ListBox to look like a TabControl)
TabControl does not override PrepareContainerForItemOverride and the solution is to make a Converter. (Not so good because I then need to specify the type of the convertee in the Converter)
Anyone know any better solution?
XAML
<sdk:TabControl ItemsSource="{Binding Items, ElementName=MyControl}">
<sdk:TabControl.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding Name}" />
</DataTemplate>
</sdk:TabControl.ItemTemplate>
</sdk:TabControl>
C#
public ObservableCollection<Model> Items { get; set; }
public ViewModel()
Items = new ObservableCollection<Model>{
new Model { Name = "1"},
new Model { Name = "2"},
new Model { Name = "3"},
new Model { Name = "4"}
};
}
public class TabConverter : IValueConverter
{
public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
List<TabSource> source = value as List<TabSource>;
if (source != null)
{
List<TabItem> result = new List<TabItem>();
foreach (TabSource tab in source)
{
result.Add(new TabItem()
{
Header = tab.Header,
Content = tab.Content
});
}
return result;
}
return null;
}
public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
{
throw new NotImplementedException();
}
}