/// <summary>
/// Adds an item in the collection and in the TreeListView
/// </summary>
/// <param name="item"></param>
/// <returns>Index of the item in the collection</returns>
public virtual int Add(TreeListViewItem item)
{
int index = GetInsertCollectionIndex(item);
if (index == -1)
{
return(-1);
}
if (Parent != null)
{
item.SetParent(Parent);
}
item.Items.Comparer = this.Comparer;
ReadWriteLock.AcquireWriterLock(-1);
int treelistviewindex = GetInsertTreeListViewIndex(item);
// Insert in the ListView
if (treelistviewindex > -1)
{
ListView listview = (ListView)TreeListView;
InsertListViewItem insert = new InsertListViewItem(listview.Items.Insert);
if (listview.InvokeRequired)
{
listview.Invoke(insert, new object[] { treelistviewindex, (ListViewItem)item });
}
else
{
listview.Items.Insert(treelistviewindex, (ListViewItem)item);
}
if (item.IsExpanded)
{
item.Expand();
}
item.SetIndentation();
}
// Insert in this collection
if (index > -1)
{
List.Insert(index, item);
}
ReadWriteLock.ReleaseWriterLock();
return(index);
}
/// <summary>
/// Remove an item from the collection and the TreeListView
/// </summary>
/// <param name="index"></param>
public new void RemoveAt(int index)
{
ReadWriteLock.AcquireWriterLock(-1);
TreeListViewItem item = this[index];
if (this[index].Visible && this.TreeListView != null)
{
ListView listview = (ListView)TreeListView;
RemoveListViewItem remove = new RemoveListViewItem(listview.Items.Remove);
if (listview.InvokeRequired)
{
listview.Invoke(remove, new Object[] { (ListViewItem)item });
}
else
{
listview.Items.Remove((ListViewItem)item);
}
}
List.RemoveAt(index);
item.SetParent(null);
ReadWriteLock.ReleaseWriterLock();
}