Delete node in treeview with the same attribute value

If the file is not very big, it might be easiest to delete the nodes from the xml file, clear the TreeView and then rebind it to the file with whatever code you're currently using.

Here's some LINQ to XML code (in console app form) which shows how you can delete all nodes which have an 'id' attribute with a given value:

using System;

using System.Linq;

using System.Xml.Linq;

class Program

{

static void Main()

{

XElement xml = XElement.Load("Nbl_Bz.xml");

Console.WriteLine("Before deletions\n");

Console.WriteLine(xml);

string value = "1200"; // or whatever

xml.Descendants().Where(e => e.Attribute("id") != null && e.Attribute("id").Value == value).Remove();

Console.WriteLine("\nAfter deletions\n");

Console.WriteLine(xml);

xml.Save("Nbl_Bz.xml"); // if you want to overwrite existing file

Console.ReadKey();

}