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In Wpf ListView can have several "view classes" to show items.
Those classes derived from "BaseView" class.

When you create custom views, you can't create RoutedEvents because "BaseView" has not a "AddHandle" static method.

I had created a GridViewSort view. (With column sorting feature) and I want to add a "DoSort" routed event with column and sortdirection as parameters.

BUT when I try to use AddHandler and DeleteHandler. Those methods are not available into "baseview" class.

Can I provide an alternative to those methods?

What I have tried:

public class GridViewSort:GridView
    {
        private static readonly string SortUpIcon = "M 2,5 L 4,3 L 6,5 L 2,5";
        private static readonly string SortDownIcon = "M 2,3 L 4,5 L 6,3 L 2,3";

        public static readonly RoutedEvent DoSortEvent = EventManager.RegisterRoutedEvent("DoSort",
            RoutingStrategy.Bubble, typeof(RoutedEventHandler), typeof(GridViewSort));

        public event RoutedEventHandler DoSort
        {
            add { AddHandler(DoSortEvent, value); }
            remove { RemoveHandler(DoSortEvent, value); }
        }
Posted
Comments
Gerry Schmitz 28-Apr-21 15:04pm
   
Add sorting, as a default, to the base; then enable / disable it in the views if it's such a big deal.

https://docs.microsoft.com/en-us/dotnet/desktop/wpf/controls/how-to-sort-a-gridview-column-when-a-header-is-clicked?view=netframeworkdesktop-4.8

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