System.Windows.Forms.ListView.SelectItems C# (CSharp) Method

		private bool SelectItems (ArrayList sel_items)
		{
			bool changed = false;
			foreach (ListViewItem item in SelectedItems)
				if (!sel_items.Contains (item)) {
					item.Selected = false;
					changed = true;
				}
			foreach (ListViewItem item in sel_items)
				if (!item.Selected) {
					item.Selected = true;
					changed = true;
				}
			return changed;
		}