diff --git a/Base/Controller/BasePartialController.cs b/Base/Controller/BasePartialController.cs
index 3ca4827..aef8fdf 100644
--- a/Base/Controller/BasePartialController.cs
+++ b/Base/Controller/BasePartialController.cs
@@ -538,6 +538,80 @@ namespace NP.Base
                 return null;
             }
         }
+        protected long? SetFileToEstimation(IList<System.Web.HttpPostedFileBase> upFiles, long fgno, String tablename, String columnname, int fseq = 1, String FGKey = "XX", bool iscontents = false, bool issubject = false, int cmno = 0)
+        {
+            try
+            {
+                var fcnt = upFiles.Count;
+                if (fcnt < 1)
+                {
+                    return null;
+                }
+                //만약 다중파일의 두 번째부터 이후의 파일들의 경우 파일그룹번호가 0 이면서 FGKey가 동일한 것이 DB에 있으면 그 FGNo를 사용한다.
+                if (fgno < 1 && fseq > 1 && FGKey != "")
+                {
+                    var fg = Dao.Get<NP.Model.File>("sys.file.getfgnobyfgkey", FGKey).FirstOrDefault();
+                    fgno = fg == null ? 0 : fg.fgno;
+                }
+                var finfos = new NP.Model.File() { fgno = fgno, tablename = tablename, columnname = columnname, uno = SUserInfo.UserNo, uip = GetUserIP() };
+                finfos.Files = new List<NP.Model.File>();
+                var _month = DateTime.Now.ToString("yyyyMM");
+                if (issubject)
+                {
+                    if (!System.IO.Directory.Exists(Server.MapPath(string.Format(@"{0}\{1}", NP.Model.Base.Subjects, cmno))))
+                    {
+                        System.IO.Directory.CreateDirectory(Server.MapPath(string.Format(@"{0}\{1}", NP.Model.Base.Subjects, cmno)));
+                    }
+                }
+                else if (!System.IO.Directory.Exists(Server.MapPath(string.Format(@"{0}\{1}\{2}", iscontents ? NP.Model.Base.Contents : NP.Model.Base.Files, _month, tablename))))
+                {
+                    System.IO.Directory.CreateDirectory(Server.MapPath(string.Format(@"{0}\{1}\{2}", iscontents ? NP.Model.Base.Contents : NP.Model.Base.Files, _month, tablename)));
+                }
+                int filelength = 0;
+                for (int i = 0; i < fcnt; i++)
+                {
+                    if (!string.IsNullOrEmpty(upFiles[i].FileName))
+                    {
+                        filelength += upFiles[i].ContentLength;
+                        string fileExt = System.IO.Path.GetExtension(upFiles[i].FileName.Split('\\').Last());
+                        string fileFullPath = issubject ? string.Format(@"\{0}\{5}_{1}_{2}_{3}{4}", cmno, SUserInfo.UserNo, DateTime.Now.ToString("yyyyMMddHHmmssfff"), i, fileExt, string.Format("{0:yyyyMMdd}", DateTime.Now)) : string.Format(@"\{0}\{1}\{5}_{2}_{3}{4}", _month, tablename, DateTime.Now.ToString("yyyyMMddHHmmssfff") + "_" + SUserInfo.UserNo.ToString(), i, fileExt, string.Format("{0:yyyyMMdd}", DateTime.Now));
+                        //fileFullPath = string.Format("{0:yyyyMMdd}", DateTime.Now) + fileFullPath;
+                        string fileFullPathStr = (issubject ? NP.Model.Base.Subjects : iscontents ? NP.Model.Base.Contents : NP.Model.Base.Files) + "\\"+ fileFullPath;
+                        fileFullPathStr = fileFullPathStr.Replace("\\\\", "\\");
+
+                        upFiles[i].SaveAs(Server.MapPath(fileFullPathStr));
+                        finfos.Files.Add(new Model.File()
+                        {
+                            orgname = upFiles[i].FileName.Split('\\').Last(),
+                            fileurl = fileFullPath.Replace("\\", "/"),
+                            filesize = upFiles[i].ContentLength,
+                            extension = fileExt.Replace(".", "")
+                        });
+                    }
+                }
+                if (finfos.Files.Count() > 0)
+                {
+                    if (finfos.fgno < 1)
+                    {
+                        Dao.Insert<NP.Model.File>("sys.filegroup.insert", finfos);
+                    }
+                    if (finfos.fgno > 0)
+                    {
+                        if (Dao.Save("sys.filegroup.save", finfos) > 0)
+                        {
+                            return finfos.fgno;
+                        }
+                    }
+                }
+                return null;
+            }
+            catch (Exception ex)
+            {
+                //Logger.TryError(ex.Message, ex);
+                SetError(ex.Message);
+                return null;
+            }
+        }
         protected long SetFileSingle(System.Web.HttpPostedFileBase upFile, long fgno, String tablename, int fseq, String FGKey)
         {
             try
diff --git a/Base/Controller/FCommonCRoom.cs b/Base/Controller/FCommonCRoom.cs
index e92cea9..4f68b74 100644
--- a/Base/Controller/FCommonCRoom.cs
+++ b/Base/Controller/FCommonCRoom.cs
@@ -119,7 +119,7 @@ namespace NP.Base.Controllers
             d.userno = SUserInfo.UserNo;
             if (Request.Files.GetMultiple("file1").Where(w => !string.IsNullOrEmpty(w.FileName)).Count() > 0)
             {
-                d.fgno = SetFile(Request.Files.GetMultiple("file1").Where(w => !string.IsNullOrEmpty(w.FileName)).ToList(), d.fgno ?? 0, "lectsd", "fgno", 1, "XX", false, true, d.cmno);
+                d.fgno = SetFileToEstimation(Request.Files.GetMultiple("file1").Where(w => !string.IsNullOrEmpty(w.FileName)).ToList(), d.fgno ?? 0, "lectsd", "fgno", 1, "XX", false, true, d.cmno);
                 d.fgno = d.fgno == 0 ? (Int64?)null : d.fgno;
             }
             return JsonOK(Dao.Save("cr.lectsd.save", d));