Removes the attribute node with the specified index from the element.
using System; using System.IO; using System.Xml; public class Sample { public static void Main() { XmlDocument doc = new XmlDocument(); doc.LoadXml("<book genre='novel' ISBN='1-111111-11-1'>" + "<title>C#</title>" + "</book>"); XmlElement root = doc.DocumentElement; root.RemoveAttributeAt(0); Console.WriteLine(doc.InnerXml); } }