WP8 LongListMultiSelector - not binding - xaml

Question

I have LongListMultiSelector in my project, which is binding with ListProductInRecipe2P. When I load page with LongListMultiSelector, list is loading but when I want delete Items LongListMultiSelector not is update.
This is my code:
XAML:
<toolkit:LongListMultiSelector x:Name="ListProductsSelectedItems" ItemsSource="{Binding ListProductInRecipe2P}">
<toolkit:LongListMultiSelector.ItemTemplate>
<DataTemplate>
<StackPanel>
<TextBlock Text="{Binding Name}" Style="{StaticResource PhoneTextGroupHeaderStyle}"></TextBlock>
<StackPanel Orientation="Horizontal">
<TextBlock Text="{Binding Size}" Style="{StaticResource PhoneTextNormalStyle}"></TextBlock>
<TextBlock Text="{Binding Type}" Style="{StaticResource PhoneTextNormalStyle}"></TextBlock>
</StackPanel>
</StackPanel>
</DataTemplate>
</toolkit:LongListMultiSelector.ItemTemplate>
</toolkit:LongListMultiSelector>
C# (behind code):
private void DelProducts_Click(object sender, EventArgs e)
{
var list = ListProductsSelectedItems.SelectedItems;
for (int i = 0; i < list.Count; i++)
{
var temp = list[i] as Fridge;
App.ViewModel.ListProductInRecipe2P.Remove(temp);
}
}
and C# (viewModel):
private List<Fridge> ListProductInRecipe2;
public List<Fridge> ListProductInRecipe2P
{
get { return ListProductInRecipe2;}
set
{
ListProductInRecipe2 = value;
changeValue("ListProductInRecipe2P");
}
}

Answer 1

Try ObservableCollection instead. It will raise the INotifyProperty event for you.
Learn more # MSDN ObservableCollection Class
using System.Collections.ObjectModel;
private ObservableCollection<Fridge> ListProductInRecipe2;
public ObservableCollection<Fridge> ListProductInRecipe2P
{
get { return ListProductInRecipe2;}
set
{
ListProductInRecipe2 = value;
// changeValue("ListProductInRecipe2P");
}
}