如何在ObservableCollection之后刷新绑定的GridView <T> 已排序？

Question

The implementation is a for a Refresh button. I use .Clear() to empty the list, then add back in the latest data. After the data is loaded I use the following function to then sort the list:

public void SortByDate()
    {
        this.oCol = new ObservableCollection<OCol>(this.oCol.OrderByDescending(myDate => myDate));
    }

The GridView refreshes with the information that I add into it, but when I run the SortByDate() function, the GridView does not refresh to reflect the new order. What do I need to do differently?

Answer 1

You need to raise a PropertyChanged event for the property that is backed by oCol . You have changed the collection and the framework is still databinding to the old collection.