asp.net FileUpload上传图片并保存到数据库

        protected void Add_Click(object sender, EventArgs e)
        {
            if (productImg.HasFile) //判断是否存在文件
            {
                    string filename = productImg.FileName;
                    string uppath = Server.MapPath("./img/product_img/") + filename;
                    //图片上传至绝对路径
                    productImg.PostedFile.SaveAs(uppath);//保存到uppath路径
                    string savepath = "\\img\\product_img\\" + filename;
			//savepath就是图片相对路径                    
       		 }
        }