Move File - Directory Folder to SharePoint Document Library

using Microsoft.SharePoint;

using System;

using System.Collections.Generic;

using System.IO;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Text.RegularExpressions;

namespace FileMover

{

   static class Program

    {

        static void Main(string[] args)

        {

            using (SPSite site = new SPSite("http://win-2016"))

            {

                using (SPWeb web = site.OpenWeb())

                {

                    string dirPath = string.Empty;

                    byte[] byteArr = null;

                    string[] dirs = Directory.GetDirectories(@"D:\TestingFolder", "*.*", SearchOption.AllDirectories);

                    foreach (string dir in dirs)

                    {

                        dirPath = Regex.Replace(dir.Split(':')[1], @"\\", "/");

                        Console.WriteLine(dirPath);

                        var folder = web.CreateFolder("testDocument", dirPath);

                        DirectoryInfo Dinfo = new DirectoryInfo(dir);

                        FileInfo[] Finfo = Dinfo.GetFiles("*.*");

                        foreach (FileInfo f in Finfo)

                        {                         

                            Console.WriteLine(f.Name);

                            byteArr = File.ReadAllBytes(f.FullName);

                            web.Files.Add("testDocument" + dirPath + "/" + f.Name, byteArr, true);

                        }

                    }

                }

            }

            Console.ReadKey();

        }

        /// <summary>

        /// Ensure SPFolder

        /// </summary>

        /// <param name="web"></param>

        /// <param name="listTitle"></param>

        /// <param name="folderUrl"></param>

        /// <returns></returns>

        public static SPFolder CreateFolder(this SPWeb web, string listTitle, string folderUrl)

        {

            if (string.IsNullOrEmpty(folderUrl))

                throw new ArgumentNullException("folderUrl");

            var list = web.Lists.TryGetList(listTitle);

            return CreateFolderInternal(list, list.RootFolder, folderUrl);

        }

        private static SPFolder CreateFolderInternal(SPList list, SPFolder parentFolder, string folderUrl)

        {

            var folderNames = folderUrl.Split(new char[] { '/' }, StringSplitOptions.RemoveEmptyEntries);

            var folderName = folderNames[0];

            var curFolder =

                parentFolder.SubFolders.Cast<SPFolder>()

                            .FirstOrDefault(

                                f =>

                                System.String.Compare(f.Name, folderName, System.StringComparison.OrdinalIgnoreCase) ==

                                0);

            if (curFolder == null)

            {

                var folderItem = list.Items.Add(parentFolder.ServerRelativeUrl, SPFileSystemObjectType.Folder,

                                                folderName);

                folderItem.SystemUpdate();

                curFolder = folderItem.Folder;

            }

            if (folderNames.Length > 1)

            {

                var subFolderUrl = string.Join("/", folderNames, 1, folderNames.Length - 1);

                return CreateFolderInternal(list, curFolder, subFolderUrl);

            }

            return curFolder;

        }

    }

}