[C#] 멀티 업로드

private void SaveToFile(string UploadDir, ref System.Web.HttpFileCollection UploadFile)
  {
   string FileName, FileExt;
   int FileCnt;
   long FileSize;
   for (FileCnt = 0; FileCnt < UploadFile.Count; FileCnt++)
   {
    System.Web.HttpPostedFile CurFile = UploadFile.Get(FileCnt);
    FileName = System.IO.Path.GetFileName(CurFile.FileName);
    FileSize = CurFile.ContentLength / 1000;   // Kbyte 단위
    if(FileName != "")
    {
     FileExt = System.IO.Path.GetExtension(FileName);
     if (FileExt == ".aspx" || FileExt == ".asp")
     {
      myFunction.PrintMsgBack("확장자가 asp, aspx 파일은 업로드 하실수 없습니다.");
     }
     else
     {
      FileInfo saveFile;
      do
      {
       saveFile = new FileInfo(UploadDir + FileName);
       if(saveFile.Exists)
       {
        FileName = FileName.Replace(".","1.");
       }
      }
      while(saveFile.Exists);
      FileNames += FileName + (char)5;
      FileSizes += FileSize.ToString() + (char)5;
      CurFile.SaveAs(UploadDir + FileName);
     }
    }
   }
  }