WPF order listbox items

Question

How do I order my items bound from model to the list box.

I have defined model that is:

public ObservableCollection<NotificationItem> Classes:

I need to order it by id which is assigned to every notification item.

at present I have definition:

  <ListBox ItemsSource="{Binding Classes, Source={StaticResource model}}"
                   ScrollViewer.VerticalScrollBarVisibility="Visible"
DataContext="{Binding}">
                        <ListBox.ItemTemplate>
                            <DataTemplate>
                                <StackPanel Orientation="Horizontal">
                                    <Label Content="{Binding Name}" />
                                </StackPanel>
                            </DataTemplate>
                        </ListBox.ItemTemplate>
                    </ListBox>

where I have reference of model:

<Model:ClassModel x:Key="model" />

Update:

where initialisation of the model is done by

 try
            {
                this.notifierModel = this.Resources["model"] as ClassModel;

                this.classController.Initialize(this.notifierModel);

            }
            catch
            {
             // todo: handle exception
            }

Answer 1

您可以直接在模型（数据上下文）上订购集合，也可以创建自定义CollectionViewSource并将ListBox绑定到该集合 。

Answer 2

Where you set up Classes you need to have:

Classes = new ObservableCollection(results.OrderBy(i => i.Id));

instead of just:

Classes = new ObservableCollection(results);

assuming that results is list of data returned by your query.