asp.net-mvc – 以表格形式上传图片并在MVC 4上显示
存储用户上传的图像然后在我的网站上显示的最佳方式是什么?
>将其作为二进制文件存储在DB中.那怎么用`img`来展示呢? 在我看来,第二种方式更方便. 解决方法
是的,在我看来也是如此.
满容易.与ASP.NET MVC应用程序一样,您首先要设计一个视图模型: public class MyViewModel { [Required] public HttpPostedFileBase File { get; set; } } 然后你可以让一个控制器有2个动作(一个渲染视图,另一个渲染文件上传): public class HomeController: Controller { public ActionResult Index() { return View(new MyViewModel()); } [HttpPost] public ActionResult Index(MyViewModel model) { if (!ModelState.IsValid) { // the user didn't upload any file => // render the same view again in order to display the error message return View(model); } // at this stage the model is valid => // you could handle the file upload here // let's generate a filename to store the file on the server var fileName = Guid.NewGuid().ToString() + Path.GetFileName(file.FileName); var path = Path.Combine(Server.MapPath("~/App_Data"),fileName); // store the uploaded file on the file system file.SaveAs(path); // TODO: now you could store the path in your database // and finally return some ActionResult // to inform the user that the upload process was successful return Content("Thanks for uploading. Your file has been successfully stored on our server"); } } 最后你将有一个相应的强类型视图,它将与表单相关联以上传文件: @model MyViewModel @using (Html.BeginForm(null,null,FormMethod.Post,new { enctype = "multipart/form-data" })) { <div> @Html.LabelFor(x => x.File) @Html.TextBoxFor(x => x.File,new { type = "file" }) @Html.ValidationMessageFor(x => x.File) </div> <button type="sybmit">Upload</button> } 另外我建议你阅读 (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |
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