/// <include file='doc\TreeNodeCollection.uex' path='docs/doc[@for="TreeNodeCollection.Insert"]/*' />
/// <devdoc>
/// Inserts a new child node on this node. Child node is positioned as specified by index.
/// </devdoc>
public virtual void Insert(int index, TreeNode node)
{
if (node.handle != IntPtr.Zero)
{
throw new ArgumentException(string.Format(SR.OnlyOneControl, node.Text), "node");
}
// Check for ParentingCycle
owner.CheckParentingCycle(node);
// If the TreeView is sorted, index is ignored
TreeView tv = owner.TreeView;
if (tv != null && tv.Sorted)
{
owner.AddSorted(node);
return;
}
if (index < 0)
{
index = 0;
}
if (index > owner.childCount)
{
index = owner.childCount;
}
owner.InsertNodeAt(index, node);
}
public virtual void Insert(int index, TreeNode node)
{
if (node.handle != IntPtr.Zero)
{
throw new ArgumentException(string.Format(SR.OnlyOneControl, node.Text), nameof(node));
}
// Check for ParentingCycle
owner.CheckParentingCycle(node);
// If the TreeView is sorted, index is ignored
TreeView tv = owner.TreeView;
if (tv is not null)
{
foreach (TreeNode treeNode in node.GetSelfAndChildNodes())
{
KeyboardToolTipStateMachine.Instance.Hook(treeNode, tv.KeyboardToolTip);
}
}
if (tv is not null && tv.Sorted)
{
owner.AddSorted(node);
return;
}
if (index < 0)
{
index = 0;
}
if (index > owner.childCount)
{
index = owner.childCount;
}
owner.InsertNodeAt(index, node);
}