private void tv_BeforeExpand(object sender, TreeViewCancelEventArgs e)
{
try
{
tv.BeforeExpand -= tv_BeforeExpand;
tv.BeginUpdate();
Cursor.Current = Cursors.WaitCursor;
var nodeData = e.Node.Tag as TreeNodeData;
e.Node.Nodes.Clear();
foreach (IHL73Object childObject in nodeData.Data.ChildObjects)
{
var childNodeData = new TreeNodeData(childObject);
var childNode = new TreeNode()
{
Text = childNodeData.ToString(), Tag = childNodeData
};
e.Node.Nodes.Add(childNode);
childNode.Nodes.Add("");
}
}
finally
{
tv.EndUpdate();
Cursor.Current = Cursors.Default;
tv.BeforeExpand += tv_BeforeExpand;
}
}
public void UpdateTree()
{
var data = new TreeNodeData(controller.Document);
TreeNode root = new TreeNode()
{
Text = data.ToString(), Tag = data
};
tv.Nodes.Add(root);
root.Nodes.Add("");
}