Listview ItemSelectionChanged fires twice?

Question

I have a Winforms App in C# with a ListView control. This ListView shows a list of TO-DO items and I am using the \'ItemSelectionChanged\' event to handle updates.

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Answer 1

Yes just remove the EventHandler at the start of the refresh and add it again after it has finished refreshing

i.e

// Remove handler
listView1.ItemSelectionChanged -= new ListViewItemSelectionChangedEventHandler(listView1_ItemSelectionChanged);

// Do refresh

// Add again
listView1.ItemSelectionChanged += new ListViewItemSelectionChangedEventHandler(listView1_ItemSelectionChanged);

Answer 2

I think you need manually unselect the item in the end of your handler.

listView1.SelectedItem = null;

Answer 3

Try this:

private void ItemSelect()
{

        if(SelectedItem!=null)
            App.Current.MainPage.Navigation.PushAsync(new Pages.TLAccByCurrency(), true);
        _selectedItem = null;
}

Answer 4

Yes, it will fire twice. Once because the previously selected item became unselected, again for the newly selected item. You just have to make sure you see the selection event:

    private void listView1_ItemSelectionChanged(object sender, ListViewItemSelectionChangedEventArgs e) {
        if (e.IsSelected) {
            // Update form
            //...
        }
    }