设置ListViewItem的可见性

Question

I have issues setting visibility to a specific ListViewItem.

 foreach (Oseba item in osebe_listView.Items)
                        {

                            if (o == item)
                            {
                                object ob = (object)osebe_listView.Items[count];
                                ListViewItem lvi = (ListViewItem)ob;
                                lvi.Visibility = Visibility.Collapsed;

                                count++;
                            }
                        }

What I want is to find the ListView item that is equal to a object from type "Oseba" and set it's visibility to collapsed.

Answer 1

I don't know exactly how the items are bound to your list box, so this is a shot into the dark, but i think you wan't something like this:

foreach (ListViewItem item in osebe_listView.Items)
{
  if ((item.DataContext as Oseba) != null)
  {
      item.Visibility = Visibility.Collapsed;
  }
}

But maybe you should take a look at Filters. WPF Filter a ListBox

Answer 2

You could use the ItemContainerGenerator.ContainerFromItem method to get a reference to the visual container for a data item provided that the container has actually been created:

foreach (var item in osebe_listView.Items)
{
    if (o == item)
    {
        ListViewItem lvi = osebe_listView.ItemContainerGenerator.ContainerFromItem(item) as ListViewItem;
        if(lvi != null)
            lvi.Visibility = Visibility.Collapsed;
        count++;
    }
}