WPF ComboBox with entity framework orderBy

Question

I filled the ComboBox in my Project like this

            CB_City.ItemsSource = c.Cities;
            CB_City.DisplayMemberPath = "city1";
            CB_City.SelectedValuePath = "city_id";
            CB_City.SelectedValue = 517;

I work with entity Framework and c# , How can I sort the results in order by ascending?

Still can not (I'm trying a lot) I am attaching the full code

           using (MorEntities1  c = new MorEntities1())
        {
            CB_City.ItemsSource = c.Cities;
            CB_City.DisplayMemberPath = "city1";
            CB_City.SelectedValuePath = "city_id";
            CB_City.SelectedValue = 517;
        } 

Answer 1

您可以使用： CB_City.ItemsSource = c.Cities.OrderBy(c=>c.Text)或CB_City.ItemsSource = c.Cities.OrderBy(c=>c.Text)

Answer 2

Another option is to use a CollectionViewSource with a SortDescription :

var myViewSource = new CollectionViewSource { Source = c.Cities.ToList() };
myViewSource.SortDescriptions.Add(
  new SortDescription("YOUR_PROPERTY", ListSortDirection.Ascending)
);
CB_City.ItemsSource = myViewSource.View;

Answer 3

Further to the post by @Ross, you can also get the CollectionViewSource this way:

var view = CollectionViewSource.GetDefaultView(CB_City.ItemsSource);
view.SortDescriptions.Add(new SortDescription("city1", 
    ListSortDirection.Ascending));