// Implementation of IPostBackEventHandler
public void RaisePostBackEvent(string eventArgument)
{
TreeView treeView = Control as TreeView;
if (treeView != null)
{
TreeNodeCollection items = treeView.Nodes;
if (!String.IsNullOrEmpty(eventArgument))
{
if (eventArgument.StartsWith("s") || eventArgument.StartsWith("e"))
{
string selectedNodeValuePath = eventArgument.Substring(1).Replace("\\", "/");
TreeNode selectedNode = treeView.FindNode(selectedNodeValuePath);
if (selectedNode != null)
{
bool bSelectedNodeChanged = selectedNode != treeView.SelectedNode;
ClearSelectedNode(items);
selectedNode.Selected = true; // does not raise the SelectedNodeChanged event so we have to do it manually (below).
if (eventArgument.StartsWith("e"))
{
selectedNode.Expand();
}
if (bSelectedNodeChanged)
{
Extender.RaiseAdaptedEvent("SelectedNodeChanged", new EventArgs());
}
}
}
else if (eventArgument.StartsWith("p"))
{
string parentNodeValuePath = eventArgument.Substring(1).Replace("\\", "/");
TreeNode parentNode = treeView.FindNode(parentNodeValuePath);
if ((parentNode != null) && ((parentNode.ChildNodes == null) || (parentNode.ChildNodes.Count == 0)))
{
parentNode.Expand(); // Raises the TreeNodePopulate event
}
}
}
}
}
