Hi,
Use the below method to delete.
List<item> newList = new List<item>();
List<item> itemsToRemove = new List<item>();
foreach(Item item in listView.Items)
{
if(newList.Contains(item))
{
itemsToRemove.Add(item);
}
else
newList.Add(item);
}
foreach(Item item in itemsToRemove)
{
listView.Items.Remove(item);
}