XML to TreeView in Wonderware Archestra IDE

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I'm trying to make TreeView from XML file but there is an error after validation (in bold line): "not an array or indexer".

dim NavBarPath as string;

dim xDoc as System.Xml.XmlDocument;

dim fs as System.IO.FileStream;

dim xRoot as System.Xml.XmlElement;

dim xnode as System.Xml.XmlNode;

dim rootnode as System.Windows.Forms.TreeNode;

NavBarPath = InTouch:InTAppDir + "NavBar.xml";

xDoc = new System.Xml.XmlDocument();

fs = new System.IO.FileStream(NavBarPath, FileMode.Open, FileAccess.Read);

xDoc.Load(fs);

xRoot = xDoc.DocumentElement;

for each xnode in xRoot

rootnode = new System.Windows.Forms.TreeNode(xnode.Attributes["Name"].Value);

...

next;

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