AlternationCount not found in listview xaml + application métro - xaml

Question

Why i can't found the memeber AlternationCount in a listview XAML in my Windows8 application??
Best regards

Answer 1

To do this you could use the ItemContainerGenerator property and chain its ContainerFromItem and IndexFromContainer methods to get the index of your item and then use a converter to get a background color from the index.
public class Item : BindableBase
{
public ItemsControl itemsControl {get;set;}
private string name;
public string Name
{
get{
return name;
}
set
{
name = value;
OnPropertyChanged();
}
}
public int Index
{
get
{
return itemsControl.ItemContainerGenerator.IndexFromContainer(
itemsControl.ItemContainerGenerator.ContainerFromItem(this)
);
}
}
}
public sealed partial class ItemContainerGeneratorTest : App1.Common.LayoutAwarePage
{
...
public ObservableCollection<Item> test
{
get
{
var test = new ObservableCollection<Item>();
test.Add(new Item() { Name = "Index for item 1: ", itemsControl = ItemsControlControl });
test.Add(new Item() { Name = "Index for item 2: ", itemsControl = ItemsControlControl });
test.Add(new Item() { Name = "Index for item 3: ", itemsControl = ItemsControlControl });
test.Add(new Item() { Name = "Index for item 4: ", itemsControl = ItemsControlControl });
test.Add(new Item() { Name = "Index for item 5: ", itemsControl = ItemsControlControl });
test.Add(new Item() { Name = "Index for item 6: ", itemsControl = ItemsControlControl });
return test;
}
}
...
}
<ItemsControl x:Name="ItemsControlControl" ItemsSource="{Binding ElementName=pageRoot, Path=test}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding Name}"/>
<TextBlock Text="{Binding Index}"/>
</StackPanel>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
Note that this example doesn't currently handle changes to the collection (i.e. OnPropertyChanged isn't called for Index when the collection changes).