使用 Ajax.BeginForm 绑定 HttpPostedFileBase
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Binding HttpPostedFileBase using Ajax.BeginForm
提问by TonE
I have a form which binds a model and a file upload using the default binder for HttpPostedFileBase.
我有一个表单，它使用 HttpPostedFileBase 的默认绑定器绑定模型和文件上传。
This works fine when using Html.BeginForm(). However, I wanted to perform the same action using AJAX so I replaced this with Ajax.BeginForm() changing the parameters accordingly.
这在使用 Html.BeginForm() 时工作正常。但是，我想使用 AJAX 执行相同的操作，因此我将其替换为 Ajax.BeginForm() 相应地更改了参数。
The model still binds correctly, however I can't get the file upload to bind to the HttpPostedFileBase.
该模型仍然可以正确绑定，但是我无法将文件上传绑定到 HttpPostedFileBase。
This binds the model and the file upload:
这将绑定模型和文件上传：
<% using (Html.BeginForm("MapUpdateColumns", "RepositoryAdmin", FormMethod.Post, new { id = "UpdateDataset", enctype = "multipart/form-data" })) {%>
This only binds the model:
这仅绑定模型：
<% using (Ajax.BeginForm("MapUpdateColumns", "RepositoryAdmin", new AjaxOptions { UpdateTargetId = "columnMappings" }, new { id = "UpdateDataset", enctype = "multipart/form-data" })) {%>
The controller action:
控制器动作：
public ActionResult MapUpdateColumns(DatasetViewModel model, HttpPostedFileBase sourceFile)
Should this be possible, and if so what am I doing wrong? Thanks.
这应该是可能的，如果是这样，我做错了什么？谢谢。
回答by Darin Dimitrov
You cannot upload files with AJAX. One way to achieve this is to use a hidden iframe which will simulate an AJAX call and perform the actual file upload or use Flash. Here's a very nice jQuery Formplugin using a hidden iframe which is capable of transparently ajaxifying a form submission containing file fields.
您无法使用 AJAX 上传文件。实现此目的的一种方法是使用隐藏的 iframe，它将模拟 AJAX 调用并执行实际的文件上传或使用 Flash。这是一个非常好的jQuery 表单插件，它使用隐藏的 iframe，它能够透明地对包含文件字段的表单提交进行 ajaxifying。
回答by Demian Flavius
It is possible, the answer is here:
有可能，答案在这里：
https://stackoverflow.com/a/13522052/1067149
https://stackoverflow.com/a/13522052/1067149
I did it myself and it's guaranteed it works.
我自己做的，它保证它有效。
回答by Taha Baig
ADD id="file"in your tag input
ADDid="file"在你的标签输入
IN YOUR ACTIONRESULT PARAMETER HttpPostedFileBase 'file' name and view tag name should be same
在你的 ACTIONRESULT PARAMETER HttpPostedFileBase 'file' name 和 view tag name 应该相同
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Create(tbl_products tbl_products,HttpPostedFileBase file)
{
if (ModelState.IsValid)
{
tbl_products.phototype = file.ContentType;
tbl_products.photo =new byte[file.ContentLength ];
file.InputStream.Read(tbl_products.photo,0, file.ContentLength);
if(obj.insert(tbl_products))
{
return RedirectToAction("Index");
}
else
{
return new HttpStatusCodeResult(HttpStatusCode.Forbidden);
}
}
return View(tbl_products);
}
IT WORKS FOR ME
这个对我有用
回答by Arnold.Krumins
Yes I also agree. You can definately upload files using 'Ajax.BeginForm'.Add 'enctype = "multipart/form-data"' to the AjaxOptions object.
是的，我也同意。您肯定可以使用'Ajax.BeginForm'.Add 'enctype = "multipart/form-data"' 上传文件到AjaxOptions 对象。
