Getting an error when trying to append to an XML Array in C# .NET

Question

I\'ve recently been trying to add something to an Array in XML using C# .NET 3.5, here is what I have:

    public void WriteToXML(string IP)
    {
        XDocum         


        

Answer 1

Try following :

    public void WriteToXML(string filename, string IP)
    {
        XDocument xmldoc = XDocument.Load(filename);
        XElement bannedIPs = xmldoc.Descendants("BannedIPs").FirstOrDefault();
        XElement newXElement = new XElement("BannedIP", IP);
        bannedIPs.Add(newXElement);
        xmldoc.Save(filename);
    }    

---

Here is full working code

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Xml.Linq;

namespace TP3
{
    class Program
    {
        const string FILENAME = @"c:\temp\test.xml";
        static void Main(string[] args)
        {
            XDocument xmldoc = XDocument.Load(FILENAME);
            XElement bannedIPs = xmldoc.Descendants("BannedIPs").FirstOrDefault();

            string IP = "NewArrayItemHere";
            XElement newXElement = new XElement("BannedIP", IP);
            bannedIPs.Add(newXElement);
            xmldoc.Save(FILENAME);
        }
    }

}