/// <summary>
/// Delete an old namespace entry that is no longer needed.
/// </summary>
/// <param name="sender">The sender of the event</param>
/// <param name="e">The event arguments</param>
private void btnDelete_Click(object sender, RoutedEventArgs e)
{
NamespaceSummaryItem nsi;
int idx = lbNamespaces.SelectedIndex;
if (idx == -1)
{
lbNamespaces.SelectedIndex = 0;
}
else
{
nsi = (NamespaceSummaryItem)lbNamespaces.Items[idx];
lbNamespaces.Items.RemoveAt(idx);
namespaceItems.Remove(nsi.Name);
nsi = nsColl[nsi.Name];
if (nsi != null)
{
nsColl.Remove(nsi);
}
if (lbNamespaces.Items.Count == 0)
{
btnDelete.IsEnabled = txtSummary.IsEnabled = false;
}
else
if (idx < lbNamespaces.Items.Count)
{
lbNamespaces.SelectedIndex = idx;
}
else
{
lbNamespaces.SelectedIndex = lbNamespaces.Items.Count - 1;
}
}
}
