Well, I thought I sent them but they came back. I sent them as .zip renamed to .notzip, but your mail server still rejected it as a security threat.

Yes I have them and they've now been sent to you. Thanks.

Hi, The download links on my article 'DataGridView Event Sequences' appear to be broken. I'm not sure what's going on here but it's the third time this happened. I haven't edited the article for some time. Thanks.

The download links in my article https://www.codeproject.com/Articles/240221/DataGridView-Event-Sequences have stopped working. Can someone from site support check it out please? Thanks.

The download source code link on my article 'DataGridView Event Sequences' appears to be broken. Thanks.

It's not possible to access nodes by index. You must know the handle of the node. If you don't have records of the node handles, you can parse the tree:

// Start with the root item:
HTREEITEM hRoot = myTree.GetRootItem();

// Get the first child of the root:
HTREEITEM hChild1 = myTree.GetChildItem(hRoot);

// Move through the siblings until you reach the node you want:
HTREEITEM hChild2 = myTree.GetNextSiblingItem(hChild1)
HTREEITEM hChild3 = myTree.GetNextSiblingItem(hChild2)