using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.SharePoint;
using System.Web;
using Microsoft.SharePoint.Administration;
using System.IO;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Please input url");
            string siteurl = Console.ReadLine();
            string[] temp = System.IO.File.ReadAllLines("userid.txt", System.Text.Encoding.UTF8);

foreach(string struser in temp)
            {

string[] arruser=struser.Split(‘|‘);

                      string Keyaccount = arruser[0];
                       Uri webAppUri = new Uri(siteurl);
                    SPWebApplication webApplication = SPWebApplication.Lookup(webAppUri);
                       string newName = arruser[1];
                          string newEmail = arruser[2];
                       foreach (SPSite siteCollection in webApplication.Sites)
            {

using (SPSite oneSite = new SPSite(siteCollection.Url))
                {
                    using (SPWeb webApp = oneSite.OpenWeb())
                    {

foreach (SPUser spuser in webApp.SiteUsers)
                        {
                            if (spuser.LoginName.ToUpper() == Keyaccount.ToUpper())
                            {
                                try
                                {
                                    string oldname = spuser.Name;
                                    string oldemail = spuser.Email;
                                    string url = webApp.Url;
                                     spuser.Name = newName;
                                    if (!string.IsNullOrEmpty(newEmail.Trim()))
                                    {
                                        spuser.Email = newEmail;
                                    }
                                    spuser.Update();

FileStream fs = new FileStream(System.Environment.CurrentDirectory + @"\log.txt", FileMode.OpenOrCreate, FileAccess.Write);