SqlServer中有一種資料型別是Image，用來儲存圖片大小不超過2g的圖片，將圖片轉換為二進位制！缺點是佔用了很大的資料儲存空間。但是現對於之前的儲存物理路徑來說讀取圖片和儲存圖片方便了很多。

　　那麼圖片在MVC程式中是如何存入資料庫，並從資料庫顯示到頁面上的呢：

　　下面是一個簡單的小例子：

private string sqlconn = "Data Source=;Initial Catalog=Image;Persist Security Info=True;User ID=sa;Password=123456";
        //
        // GET: /UpDownload/

        public ActionResult Index()
        {
            return View();
        }
        [HttpPost]
        [ValidateInput(false)]
        public bool Upload(HttpPostedFileBase[] fileToUpload)
        {

            string path = "";

            try
            {

                //TODDO:讀取任何地方的路徑
                foreach (HttpPostedFileBase file in fileToUpload)
                {
                    path = System.IO.Path.Combine(Server.MapPath("~/"), "uploadimage\\" + System.IO.Path.GetFileName("00" + file.FileName.Substring(file.FileName.LastIndexOf("."))));

                    //寫入資料庫


                    file.SaveAs(path);

                    //將需要儲存的圖片讀取為資料流
                    FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read);
                    Byte[] imgbtye = new byte[fs.Length];
                    fs.Read(imgbtye, 0, Convert.ToInt32(fs.Length));
                    fs.Close();

                    using (SqlConnection conn = new SqlConnection(sqlconn))
                    {
                        conn.Open();
                        SqlCommand cmd = new SqlCommand();
                        cmd.Connection = conn;
                        cmd.CommandText = "insert into T_TeacherImage(TeacherImage) values(@imgfile)";
                        SqlParameter par = new SqlParameter("@imgfile", SqlDbType.Image);
                        par.Value = imgbtye;
                        cmd.Parameters.Add(par);
                        cmd.ExecuteNonQuery();

                    }

                }

                return true;
            }
            catch
            {
                return false;
            }

        }



        #region 讀取檔案直接顯示到檢視上
        public void Read()
        {
            byte[] MyData = new byte[0];
            using (SqlConnection conn = new SqlConnection(sqlconn))
            {
                conn.Open();
                SqlCommand cmd = new SqlCommand();
                cmd.Connection = conn;
                cmd.CommandText = "select TeacherImage from T_TeacherImage where id='1'";
                SqlDataReader sdr = cmd.ExecuteReader();
                sdr.Read();
                MyData = (byte[])sdr["TeacherImage"];
                Response.ContentType = "image/gif";
                Response.BinaryWrite(MyData);
                conn.Close();

            }

        }
        #endregion
 

		if (xhr.readyState == 4 && xhr.status == 200) {
		
		
		        $('#personimg').attr("src", "http://localhost:55576/UpDownload/Read");
		        
		    }

這個demo的實現環境是MVC,圖片的獲取路徑是，當前服務主機地址/controller/action