private void btnDelete_Click(object sender, EventArgs e)
{
int i = listView1.SelectedIndices[0];
listView1.SelectedIndices.Clear();
items.RemoveAt(i);
listView1.Items.RemoveAt(i);
i--;
if (i < 0 && items.Count > 0)
{
i = 0;
}
if (i >= 0)
{
listView1.Items[i].Selected = true;
}
btnAdd.Enabled = items.MaxSize == -1 || listView1.Items.Count < items.MaxSize;
btnDelete.Enabled = listView1.SelectedItems.Count > 0;
}
