How do you sort a CollectionViewSource by one property, then by another as a tiebreak?

Question

Currently, my CollectionViewSource sorts a collection of items by description. If the description is the same, I want to sort based on ID. How can I specify to sort by descr

Answer 1

I'm not sure why adding the SortDescription for Id does not work as it should work fine.

Like this:

I put together a full example of this working as you want:

Xaml:

Code:

public partial class MainWindow : Window
{
    private ObservableCollection myVar = new ObservableCollection();

    public MainWindow()
    { 
        InitializeComponent();
        Items.Add(new MyObject { Description = "Stack", Id = 5 });
        Items.Add(new MyObject { Description = "OverFlow", Id = 1 });
        Items.Add(new MyObject { Description = "StackOverFlow", Id = 2 });
        Items.Add(new MyObject { Description = "Stack", Id = 1 });
        Items.Add(new MyObject { Description = "Stack", Id = 0 });
        Items.Add(new MyObject { Description = "OverFlow", Id = 7 });  
    }

    public ObservableCollection Items
    {
        get { return myVar; }
        set { myVar = value; }
    }
}


public class MyObject
{
    public int Id { get; set; }
    public string Description { get; set; }

    public override string ToString()
    {
        return string.Format("Desc: {0}, Id: {1}", Description, Id);
    }
}

Result: