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？
我想我应该以某种方式将它写入目录,然后将其地址作为`img`的`src`属性传递.
>我可以将它存储在Web服务器的某个地方,将图像的地址存储在数据库中.那么我应该在`src`属性中简单地指定数据库中的地址.
>其他方式？！
在我看来,第二种方式更方便.
还有一个问题！
在这两种情况下如何以html格式上传此图像？ @Html doesent有什么像@ Html.FileFor(…)那样我怎么能得到< input type ='file'/>的数据？在我的行动？
我感谢任何建议.
解决方法
in my opinion the second way is more convenient.
是的,在我看来也是如此.
In both case How Can I upload this images in html form?
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Phil Haack's blog post,说明ASP.NET MVC中的文件上传工作.
