Question: How do I add to a ListView after the ListWrapper has been initilized?

I have a use case where I would like to update the underlying datasource for my ListView. I was hoping I could simply .Add() or .Remove() from the underlying IList datasource but that doesn’t seem to be the case. Is my only option to set the ListView.Source property with a new IList?

Example

private static List<string> source1 = new List<string>() { "Header" };

public static void Main()
{
    Application.Init();
    
    var window = new Window() { Height = Dim.Fill() ,Width = Dim.Fill() };
    Application.Top.Add(window);

    var list1 = new ListView(source1) { Width = 8, Height = Dim.Fill() };
    window.Add(list1);

    var index = 1;
    Application.MainLoop.AddTimeout(TimeSpan.FromSeconds(1), loop =>
    {
        source1.Add($"Item {index++}"); // These are not rendered
        return true;
    });

    Application.Run();
}

[brian-pickens]

Thanks @BDisp for an attempted workaround. However I was hoping I could essentially use an expression as my IList source. To answer my own question, I realized that using a Property accessor actually calls the Get method and thus returns a temporary value. It is not a reference to the dictionary source. Here is the stackoverflow question I found talking about it.

I think what I’ll do is create my own implementation of IListDatasource that takes an Expression and see if that will work for my use case.

[tig]

list1.MoveDown (); automatically call the SetNeedsDisplay

This will work too, but will cause the list to scroll as things are added. That is not always wanted.