private void treeView1_AfterLabelEdit(object sender, System.Windows.Forms.NodeLabelEditEventArgs e) { var HostsXML = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "Hosts.xml"); XmlDocument doc = new XmlDocument(); doc.Load(HostsXML); foreach (TreeNode pChild in e.Node.Parent.Nodes) { if (pChild.Text == e.Label) { // same name found, cancel the edit operation MessageBox.Show("That Name Cannot be Used. Please Select a Different Name"); e.CancelEdit = true; e.Node.BeginEdit(); //treeView1.Nodes.Remove(treeView1.SelectedNode); return; } } if (e.Label != null) { if (e.Label.Length > 0) { if (String.IsNullOrEmpty(selectedNode)) { XmlNode rootNode = doc.SelectSingleNode("Servers"); XmlNode recordNode = rootNode.AppendChild(doc.CreateNode(XmlNodeType.Element, "Server", "")); recordNode.AppendChild(doc.CreateNode(XmlNodeType.Element, "Name", "")).InnerText = e.Label; } else { XmlElement root = doc.DocumentElement; XmlNodeList xnList = doc.SelectNodes("/Servers/Server[Name ='" + selectedNode + "']"); foreach (XmlNode xn in xnList) { xn["Name"].InnerText = e.Label; } } } else { MessageBox.Show("You Did Not Enter a Valid Name:1"); e.CancelEdit = true; e.Node.BeginEdit(); //treeView1.Nodes.Remove(treeView1.SelectedNode); return; } } else { e.CancelEdit = true; MessageBox.Show("You Did Not Enter a Valid Name: 2"); e.Node.BeginEdit(); //treeView1.Nodes.Remove(treeView1.SelectedNode); return; } selectedNode = null; doc.Save(HostsXML); }
var
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