Question

My WPF app using an XMLDataProvider for its data. The XML file has a

<RELEASEDATE>dd/mm/yyyy</RELEASEDATE>

for each of the listed items. I’m sorting the data in the app using a

Listbox1.Items.SortDescriptions.Add(new SortDescription("RELEASEDATE", ListSortDirection.Descending));

The results aren’t what expected as the date is treated as a string.

What is the most elegant way around this? Can I somehow convert to a date inline?

Answer 1

You have to implement own IComparer:

class DateTimeComparer : IComparer
    {
        public int Compare(object x, object y)
        {
            //To Do : Implement DataTime Comparering
        }
    } 

and now assign the IComparer implementation to the collection’s ListCollectionView.CustomSort:

 ListCollectionView view = new ListCollectionView(ListBox.Items);

 view.CustomSort = new DateTimeComparer();

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