private void _btnAdd_Click(object sender, System.EventArgs e)
{
// clone current style
ReportStyle style = _list.SelectedItem as ReportStyle;
ReportStyle clone = style.Clone() as ReportStyle;
// ensure that new name is unique
clone.Name = CreateUniqueName(clone.Name);
// add it to list control
_list.Items.Add(clone);
_list.SelectedItem = clone;
// remember we're dirty
_dirty = true;
}
