// Find a tree node for a section node, regardless of its label.
// Return null when no node is found (do not throw an exception.)
private TreeNode FindTreeNodeWithoutLabel(SectionNode section)
{
TreeNode[] nodes = Nodes.Find(section.GetHashCode().ToString(), true);
foreach (TreeNode n in nodes)
{
if (n.Tag == section)
{
return(n);
}
}
return(null);
}
// Check whether a node is in the tree view.
private bool IsInTree(SectionNode section)
{
if (section != null)
{
TreeNode[] nodes = Nodes.Find(section.GetHashCode().ToString(), true);
foreach (TreeNode n in nodes)
{
if (n.Tag == section && n.Text == section.Label)
{
return(true);
}
}
}
return(false);
}
// Find the tree node for a section node. The labels must also match.
private TreeNode FindTreeNode(SectionNode section)
{
TreeNode n = FindTreeNodeWithoutLabel(section);
if (n == null)
{
throw new Exception(String.Format("Could not find tree node for section with label \"{0}\"",
section.Label));
}
if (n.Text != section.Label)
{
throw new Exception(
String.Format("Found tree node matching section node #{0} but labels mismatch (wanted \"{1}\" but got \"{2}\").",
section.GetHashCode(), section.Label, n.Text));
}
return(n);
}