Hello!

I have a problem with verifying if a certain value is added to a ListView. The items are created with this code:

            UltraListViewItem item = new UltraListViewItem(name, new UltraListViewSubItem[ { new UltraListViewSubItem(size, null) }, null);//size is a number
            item.Key = name;//name is a string
            item.Value = name;
      
            //Control if an item with the same name already exist

           if (ultraListViewDocumenti.Items.Contains(name))
            {
                MessageBox.Show("Already in list!");
                return;
            }

            //Else it is not on the listview so add it to the collection
            ultraListViewDocumenti.Items.Add(item);

The problem is that it does not enter on the if block and as a result i get an ArgumentException that say "The element is already added"

Any idea how to fix this?

Thank you.