Question

I have got:

var orderedStatItmes = item.Statistics.OrderByDescending(t=>t.StartTime); 

Note that

public BindingList<IStatistics> Statistics { set; get; }

What I need is the best way to reassign orderedStatItmes to item.Statistics so it should be in place.

How to do it?

Thanks!!

Answer 1

I can’t say I’ve used BindingList<T> much at all myself.

You may be better off sorting the underlying collection, if you’ve got access to that. Alternatively, if the BindingList<T> itself supports sorting, you might want to use IBindingList.ApplySort.

One horribly hacky way of doing it would be:

var ordered = item.Statistics.OrderByDescending(t => t.StartTime).ToList();
for (int i = 0; i < ordered.Count; i++)
{
    item.Statistics[i] = ordered[i];
}

… but I wouldn’t like to say what that will do to any bindings while it’s updating.

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Old answer (before question was edited to mention BindingList<T>)

Do you mean you need to mutate the existing array, or are you happy to just assign a new array reference to the item.Statistics property? If it’s the latter:

item.Statistics = item.Statistics.OrderByDescending(t=>t.StartTime).ToArray();

If you want to basically sort the array (I’m assuming it’s an array, based on your question title) in place, you could use:

Array.Sort(item.Statistics, (x, y) => x.StartTime.CompareTo(y.StartTime));