SharePoint2010 文档集操作-创建

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using (SPSite site = new SPSite("http://sharepoint2010"))            {                using (SPWeb web = site.OpenWeb())                {                      SPList list = web.Lists.TryGetList("Docs");                                         SPContentType ct = web.ContentTypes[new SPContentTypeId("0x0120D520")];                      var hashTable = new Hashtable();                    hashTable.Add("DocumentSetDescription", "test");                                      DocumentSet documentSet = DocumentSet.Create(list.RootFolder, "test", list.ContentTypes.BestMatch(ct.Id), hashTable,true);                                      SPFolder folder = documentSet.Folder;                    using (FileStream strm = new FileInfo(@"C:\test\test.txt").Open(FileMode.Open))                    {                        byte[] data = new byte[strm.Length];                        strm.Read(data, 0, (int)strm.Length);                        folder.Files.Add("test.txt", data);                        folder.Update();                      }                                    }            }