public object this[int index] {
get {
if (index < 0 || index >= this.Count)
{
throw new ArgumentOutOfRangeException();
}
return(SharpTreeNode.GetNodeByVisibleIndex(root, includeRoot ? index : index + 1));
}
set {
throw new NotSupportedException();
}
}
public object this[int index] {
get {
if (index < 0 || index >= this.Count)
{
throw new ArgumentOutOfRangeException();
}
SharpTreeNode node;
if (nodeCache.TryGetValue(index, out node))
{
return(node);
}
node = SharpTreeNode.GetNodeByVisibleIndex(root, includeRoot ? index : index + 1);
nodeCache[index] = node;
return(node);
}
set {
throw new NotSupportedException();
}
}