I have a request, Help me find 2-3 bugs on my code C# that my apllication cound compile and run

I'm programming apllication which capture web pages. I have a request, Help me find 2-3 bugs on my code that my apllication cound compile and run. xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.IO; using System.Xml; using System.Xml.XPath; using System.Collections; using System.Net;

namespace WebFiles
{
    class CDownloadWebFiles
    {
        const string fileLinks = "Links/links.txt";
        private  ArrayList addresses;
        private string[] links;
        public void downloadWebFiles()
        {
             this.getLinks();            
             getWebPage();
             download();
        }   

        protected void getLinks()
        {          
            char[] delimiterChars = { '\r', '\n', '\t',' ' };
            int it;
            int jt;
            for (it=0; it<this.addresses.Length;it++)            
            {
                for (jt=0; jt < this.addresses.Length; jt++)
                {
                    string[] content = Directory.GetFiles(this.addresses[jt]);
                    this.addresses= content[jt].Split(delimiterChars);
                }
            }
        }

        protected void getWebPage()
        {
            string link;
            foreach (string[]links in link)
            {
                XmlDocument doc = new XmlDocument();
                doc.Load(link);
                XmlNodeList elemList = doc.GetElementsByTagName("a");
                int i;
                for (i = 0; i < elemList.Count; i++)
                {
                    this.addresses=(elemList[i].InnerXml);
                }                
            }            
        }         

        protected void download()
        {
            int k;
            for (k=0; k<this.addresses.Count;k++)            
            {
                 FileInfo fileInfo = new FileInfo(addresses[k]);
                 string name = fileInfo.Name;
                 if ((name.IndexOf(";") != 0) && (name.IndexOf("=") != 0) && (name.IndexOf("?") != 0) && (name.Length > 0))
                 {
                    WebClient client = new WebClient();
                    string downloadString = client.DownloadString(name);
                }               
            }   
        }
    }
}

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace DownloadWebFiles
{
    public partial class AppDownloadWebFiles : Form
    {
        public AppDownloadWebFiles()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            OpenFileDialog openFileDialog1 = new OpenFileDialog();
            openFileDialog1.Filter = "Text Files (.txt)|*.txt|All Files (*.*)|*.*";
            openFileDialog1.FilterIndex = 1;
            WebFiles.CDownloadWebFiles Files = new WebFiles.CDownloadWebFiles;
            Files.DownloadWebFiles();
        }


        private void openFileDialog_FileOk(object sender, CancelEventArgs e)
        {

        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace DownloadWebFiles
{
    static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new AppDownloadWebFiles());
        }
    }
}