Override ListView Clear() method

Question

I have a ListView class that uses the ItemSelectionChanged event to maintain its own list of selected items.

This is working well, except that Clear() doesn't seem to fire the ItemSelectionChanged event.
This means that after Clear() is called the list still contains all of the items that were highlighted prior to Clear() being called.

I wanted to override the Clear() method so that I could clear the list myself, but I can see that it's not marked as virtual. Is there another way that I can use the existing Clear() method?

Plan B is that I just write my own method and call it right after clear, but that isn't as nice.

listView1.Clear();
listView1.ClearMyList();

Bruno Joaquim · Accepted Answer · 2015-11-05T15:58:47.793

4

actually I dont know the name of this feature of c# (public new void), but you can do this by creating your own "customListView".

var listView = new CustomListView();
listView.Clear();

public class CustomListView : ListView
{
    public new void Clear()
    {
        Console.WriteLine("I can clear myself...");
    }
}

edited Nov 05 '15 at 15:58

answered Nov 05 '15 at 15:48

Bruno Joaquim

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inheritance is the name – online Thomas Nov 05 '15 at 15:48
I'm referring to the "public new void", is this also inheritance? – Bruno Joaquim Nov 05 '15 at 15:50
nop, this is hidding: *[The **new** modifier creates a new member with the same name and causes the original member to become hidden.](https://msdn.microsoft.com/en-us/library/435f1dw2.aspx)* – Thomas Ayoub Nov 05 '15 at 16:12

score 0 · Answer 2 · edited May 23 '17 at 11:46

0

You can not override non virtual method. So writting your 'new' own method is the best way to go.

This is a similar question

edited May 23 '17 at 11:46

Community

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answered Nov 05 '15 at 15:50

Mathieu Schmitt

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Override ListView Clear() method

2 Answers2