/// <summary>
/// Removes the specified collection of items from the collection.
/// </summary>
/// <param name="item">A <see cref="TreeListViewItemCollection"/> to remove from the collection.</param>
public void RemoveRange(TreeListViewItemCollection items)
{
if (items == null)
{
return;
}
// Aulofee customization - start. Line below added.
_listView.BeginUpdate();
TreeListViewItem recalculateFrom = null;
for (int i = items.Count - 1; i >= 0; i--)
{
TreeListViewItem newRecalculateFrom = RemoveInternal(items[i]);
if (recalculateFrom == null || newRecalculateFrom.Y < recalculateFrom.Y)
{
recalculateFrom = newRecalculateFrom;
}
}
_listView.RecalculateItemPositions(recalculateFrom);
// Aulofee customization - start. Line below added.
_listView.EndUpdate();
}
private int AutoSizeItems(TreeListViewItemCollection items)
{
int colIndex = this.Index;
int colDisplayIndex = this.DisplayIndex;
int twid = 0;
int mwid = 0;
int baseIndent = 0;
if (colDisplayIndex == 0)
{
if (ListView.ShowPlusMinus || (ListView.ShowTreeLines && ListView.ShowRootTreeLines))
{
baseIndent += 16;
}
}
for (int index = 0; index < items.Count; ++index)
{
twid = 0;
TreeListViewItem item = items[index];
Font fnt = item.Font;
if (fnt == null)
{
fnt = Font;
}
if (item.ImageIndex > -1 || item.SelectedImageIndex > -1)
{
twid += 16;
}
if (colDisplayIndex == 0)
{
twid += baseIndent + (16 * (item.Depth - 1));
}
twid += GetStringWidth(item.SubItems[colIndex].Text, fnt) + 10;
twid += 5;
if (twid > mwid)
{
mwid = twid;
}
if (item.HasChildren && item.Expanded)
{
twid = AutoSizeItems(item.Items);
if (twid > mwid)
{
mwid = twid;
}
}
}
return(mwid);
}
