public ResultM UploadFile(FileInfoM pFileInfoM)        {            ResultM result = new ResultM() { Flag = 1 };            DbModel db = new DbModel();            DbDocModel dbDoc = new DbDocModel();            var tranDB = db.Database.BeginTransaction();            var tranDBDoc = dbDoc.Database.BeginTransaction();            try            {                //validate                var fdmtM = db.RefDocMgtType.FirstOrDefault(t => t.RefDocMgtTypeName == pFileInfoM.DocType);                if (fdmtM == null)                {                    result.Flag = 0; result.Msg = "不支持此文件类型！";                    return result;                }                var recordM = db.Record.SingleOrDefault(t => t.ReferenceNumber == pFileInfoM.ReferenceNumber && t.RecordTypeId == 20);                if (recordM == null)                {                    result.Flag = 0; result.Msg = "找不到ReferenceNumber：" + pFileInfoM.ReferenceNumber + "对应记录！";                    return result;                }                if (pFileInfoM.FileData.Length <= 0)                {                    result.Flag = 0; result.Msg = "上传文件大小不正确！";                    return result;                }                byte[] bytes = pFileInfoM.FileData;                //流转换为byte                //byte[] bytes = new byte[pFileInfoM.File.Length];                //pFileInfoM.File.Read(bytes, 0, bytes.Length);                //pFileInfoM.File.Seek(0, SeekOrigin.Begin);// 设置当前流的位置为流的开始                 //Create DBDocManagement                var docManagementModel = new DBDocManagement() { CreateDate = DateTime.Now, Blob = bytes, FileExtension = pFileInfoM.ExtendName };                dbDoc.DBDocManagement.Add(docManagementModel);                dbDoc.SaveChanges();                //Create FileInformation                FileInformation fileInfoModel = new FileInformation                {                    Title = "Document",                    FileSize = (new Func<int>(() =>                    {                        int val;                        int.TryParse(pFileInfoM.FileSize, out val);                        return val;                    })).Invoke(),                    OriginalFile = pFileInfoM.DocName,                    AuditUserId = pFileInfoM.AuditUserId,                    CreatedByUserId = pFileInfoM.AuditUserId,                    UploadDate = DateTime.Now,                    FileExtension = pFileInfoM.ExtendName,                    CorrespondenceDate = DateTime.Now,                    StatusChangedDate = DateTime.Now,                    StatusChangedBy = pFileInfoM.AuditUserId,                    DocMgtStatus = "I",                    ExternalFileId = docManagementModel.FileId,//DocDb                    RefDocMgtTypeId = fdmtM.RefDocMgtTypeId,                    DocDescription = pFileInfoM.DocName.Replace("." + pFileInfoM.ExtendName, ""),                    Author = pFileInfoM.Author,                    StatusChangedComment = "Default Comment",                    Recipient = ""                };                db.FileInformation.Add(fileInfoModel);                db.SaveChanges();                //Create Link Relationship                db.LnkRecordFile.Add(new LnkRecordFile()                {                    RecordId = recordM.RecordID,                    FileId = fileInfoModel.FileId,                    DocMgtFolderId = 1,//select DocMgtFolderId from RefDocMgtFolder where DocMgtFolderName=‘Documents‘ = 1                    AuditUserId = pFileInfoM.AuditUserId                });                //Create DocMgtUserAccessControl                for (int i = 1; i <= 3; i++)                {                    db.DocMgtUserAccessControl.Add(new DocMgtUserAccessControl()                    {                        FileId = fileInfoModel.FileId,                        UserTypeId = i,//UserTypeId = RefUserType.UserTypeId                        AuditUserId = 1                    });                }                db.SaveChanges();                tranDB.Commit();                tranDBDoc.Commit();            }            catch (Exception ex)            {                Log.Writer(ex, "UploadFile");                tranDB.Rollback();                tranDBDoc.Rollback();                result.Flag = 0; result.Msg = ex.ToString();            }            finally            {                tranDB.Dispose();                tranDBDoc.Dispose();            }            return result;        }