Controller：
[HttpPost]
        public ActionResult ImageUpLoad(Gallery gallery, HttpPostedFileBase[] Files)
        {
            foreach (HttpPostedFileBase File in Files)
            {
                if (_UploadRepository.ImageAllowFileType(File) == true)
                {
                    _UploadRepository.ImageUploadToDatabase(gallery,File); //以二进制数据流形式保存到数据
                }
                else
                {
                    ModelState.AddModelError("", "只支持的.jpg .jpeg .png .bmp格式");
                }
            }
            return RedirectToAction("Index", "Home");
        }



ImageAllowFileType：
bool IUploadRepository.ImageAllowFileType(HttpPostedFileBase File)
        {
            var extension = Path.GetExtension(File.FileName);
            var allowExtentions = new string[] { ".jpg", ".jpeg", ".png", ".bmp" };
            if (allowExtentions.Contains(extension))
            {
                return true;
            }
            else
            {
                return false;
            }
        }



ImageUploadToDatabase：

void IUploadRepository.ImageUploadToDatabase(Gallery gallery, HttpPostedFileBase File)
        {
            Int32 Length = File.ContentLength;
            byte[] TempImage = new byte[Length];
            File.InputStream.Read(TempImage, 0, Length);
            gallery.ImageData= TempImage;

            db.Galleries.Add(gallery);
            db.SaveChanges();
        }

View：
<input type="file" id="Files" name="Files" multiple="multiple" /> @*multiple：HTML5新属性,规定输入字段可选择多个值 *@