using Microsoft.SharePoint;using System;using System.Collections.Generic;using System.Configuration;using System.Data;using System.IO;using System.Linq;using System.Net;using System.Text;using System.Threading.Tasks;using System.Web;namespace _20150928{    class PRogram    {        static void Main(string[] args)        {            //Console.WriteLine(HttpUtility.HtmlDecode("&lt;div class=&quot;ExternalClass261ED404956E49D289332C8D5DE50427&quot;&gt;&lt;p&gt;&lt;a href=&quot;/sites/00/0001/SiteAssets/Lists/Dialogue/AllItems/TCALProjectList.xlsx&quot;&gt;&lt;img width=&quot;16&quot; height=&quot;16&quot; class=&quot;ms-asset-icon ms-rtePosition-4&quot; src=&quot;/_layouts/15/images/icxlsx.png&quot; alt=&quot;&quot; /&gt;TCALProjectList.xlsx&lt;/a&gt;?&lt;/p&gt;&lt;/div&gt;"));            ////string str = "http://baidu.com.cn/hello%20I%27am a apple/te%27st.txt";            ////Console.WriteLine(str.Length);            //Console.ReadKey();            string mainSite = ConfigurationManager.AppSettings["SiteUrl"];            string siteUrl = mainSite + "sites/" + "te" + "/" + "test" + "/";            string listName = "test";            string folderServerRelativeUrl = "/test/test/";            SPFolder folder = CreateFolderInList(siteUrl, listName, folderServerRelativeUrl);            folder = GetSubFolderNewSystem(folder, "test");            SPFolder folderNew = folder;            string strURL = "";//web service get data            string fileName = "";            Stream stream = DownLoadAttachment(strURL);            if (stream != null)            {                MigrationFromFileToFile(folderNew, fileName, stream);            }            string bodystring = "<a href=" + folderNew.Url.Remove(0, mainSite.Length) + fileName + " ><img src=" + "/_layouts/15/images/icxlsx.png" + " />" + fileName + "</a>";        }        public static SPFolder CreateFolderInList(string siteUrl, string listName, string folderServerRelativeUrl)        {            SPFolder returnFolder = null;            using (SPSite site = new SPSite(siteUrl))            using (SPWeb web = site.OpenWeb())            {                SPList list = web.Lists[listName];                SPFolder folder = list.RootFolder;                string[] folderNames = folderServerRelativeUrl.Split('/');                foreach (string folderName in folderNames)                {                    if (!string.IsNullOrEmpty(folderName))                    {                        bool exitFolder = false;                        if (folder.SubFolders.Count > 0)                        {                            foreach (SPFolder subFolder in folder.SubFolders)                            {                                if (subFolder.Name.Equals(folderName))                                {                                    exitFolder = true;                                    folder = subFolder;                                    break;                                }                            }                        }                        if (!exitFolder)                        {                            //フォルダー作成                            folder.SubFolders.Add(folderName);                            folder = folder.SubFolders[folderName];                        }                    }                }                returnFolder = folder;            }            return returnFolder;        }        public static SPFolder GetSubFolderNewSystem(SPFolder parentFolder, string folderName)        {            SPFolder subFolder = null;            try            {                subFolder = parentFolder.SubFolders[folderName];                if (!subFolder.Exists)                {                    parentFolder.SubFolders.Add(folderName);                    subFolder = parentFolder.SubFolders[folderName];                }            }            catch            {                parentFolder.SubFolders.Add(folderName);                subFolder = parentFolder.SubFolders[folderName];            }            return subFolder;        }        public static Stream DownLoadAttachment(string strURL)        {            Stream stream;            try            {                WebClient myWebClient = new WebClient();                myWebClient.Credentials = new NetworkCredential(ConfigurationManager.AppSettings["OldUserName"], ConfigurationManager.AppSettings["OldUserPassWord"], ConfigurationManager.AppSettings["OldDomain"]);                byte[] pagedata = myWebClient.DownloadData(strURL);                stream = new MemoryStream(pagedata);                myWebClient.Dispose();                return stream;            }            catch (Exception ex)            {                return null;            }        }        public static void MigrationFromFileToFile(SPFolder folderNew, string fileName, Stream stream)        {            SPFile subFileNew = null;            byte[] contents = StreamToBytes(stream);            if (contents != null)            {                subFileNew = folderNew.Files.Add(folderNew.Url + "/" + fileName, contents, true);            }        }        public static byte[] StreamToBytes(System.IO.Stream stream)        {            int maxsize = Int32.Parse(ConfigurationManager.AppSettings["maxSize"].ToString());            using (System.IO.MemoryStream ms = new System.IO.MemoryStream())            {                byte[] bytes = new byte[maxsize];                int read;                while ((read = stream.Read(bytes, 0, bytes.Length)) > 0)                {                    ms.Write(bytes, 0, read);                    if (ms.ToArray().Length > maxsize)                    {                        return null;                    }                }                return ms.ToArray();            }        }    }}