ASP.NET MVC 将模型与文件一起*传递回控制器

发布于 2024-09-26 21:18:38 字数 2179 浏览 4 评论 0原文

好吧,我已经研究了几个小时了,但我根本找不到解决方案。

我想从我的用户那里获取一些数据。因此,首先,我使用控制器创建一个接收模型的视图:

public ViewResult CreateArticle()
{
    Article newArticle = new Article();
    ImagesUploadModel dataFromUser = new ImagesUploadModel(newArticle);
    return View(dataFromUser);
}

然后,我有视图:

<asp:Content ID="Content1" ContentPlaceHolderID="MainContentPlaceHolder" runat="server">

    <h2>AddArticle</h2>

    <% using (Html.BeginForm("CreateArticle", "Admin", FormMethod.Post, new { enctype = "multipart/form-data" })){ %>


                <%= Html.LabelFor(model => model.newArticle.Title)%>
                <%= Html.TextBoxFor(model => model.newArticle.Title)%>

                <%= Html.LabelFor(model => model.newArticle.ContentText)%>
                <%= Html.TextBoxFor(model => model.newArticle.ContentText)%>

                <%= Html.LabelFor(model => model.newArticle.CategoryID)%>
                <%= Html.TextBoxFor(model => model.newArticle.CategoryID)%>

                <p>
                    Image1: <input type="file" name="file1" id="file1" />
                </p>
                <p>
                    Image2: <input type="file" name="file2" id="file2" />
                </p>

            <div>
                <button type="submit" />Create
            </div>



    <%} %>


</asp:Content>

最后 - 原始控制器,但这次配置为接受数据:

   [HttpPost]
    public ActionResult CreateArticle(ImagesUploadModel dataFromUser)
    {
        if (ModelState.IsValid)
        {
            HttpPostedFileBase[] imagesArr;
            imagesArr = new HttpPostedFileBase[2]; 
            int i = 0;
            foreach (string f in Request.Files)
            {
                HttpPostedFileBase file = Request.Files[f];
                if (file.ContentLength > 0)
                    imagesArr[i] = file;
            }

该控制器的其余部分并不重要,因为无论我所做的,Request.Files(或Request.Files.Keys)的count属性仍然为0。我根本找不到从表单传递文件的方法(模型传递得很好)。

Ok, I've been going at this for several hours and I simply cannot find the solution.

I want to get some data from my user. So first, I use a controller to create a view which receives a Model:

public ViewResult CreateArticle()
{
    Article newArticle = new Article();
    ImagesUploadModel dataFromUser = new ImagesUploadModel(newArticle);
    return View(dataFromUser);
}

Then, I have the view:

<asp:Content ID="Content1" ContentPlaceHolderID="MainContentPlaceHolder" runat="server">

    <h2>AddArticle</h2>

    <% using (Html.BeginForm("CreateArticle", "Admin", FormMethod.Post, new { enctype = "multipart/form-data" })){ %>


                <%= Html.LabelFor(model => model.newArticle.Title)%>
                <%= Html.TextBoxFor(model => model.newArticle.Title)%>

                <%= Html.LabelFor(model => model.newArticle.ContentText)%>
                <%= Html.TextBoxFor(model => model.newArticle.ContentText)%>

                <%= Html.LabelFor(model => model.newArticle.CategoryID)%>
                <%= Html.TextBoxFor(model => model.newArticle.CategoryID)%>

                <p>
                    Image1: <input type="file" name="file1" id="file1" />
                </p>
                <p>
                    Image2: <input type="file" name="file2" id="file2" />
                </p>

            <div>
                <button type="submit" />Create
            </div>



    <%} %>


</asp:Content>

and finally - the original controller, but this time configured to accept the data:

   [HttpPost]
    public ActionResult CreateArticle(ImagesUploadModel dataFromUser)
    {
        if (ModelState.IsValid)
        {
            HttpPostedFileBase[] imagesArr;
            imagesArr = new HttpPostedFileBase[2]; 
            int i = 0;
            foreach (string f in Request.Files)
            {
                HttpPostedFileBase file = Request.Files[f];
                if (file.ContentLength > 0)
                    imagesArr[i] = file;
            }

The rest of this controller does not matter since no matter what I do, the count attribute of Request.Files (or Request.Files.Keys) remains 0. I simply can't find a way to pass the files from the form (the Model passes just fine).

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评论(2

戴着白色围巾的女孩 2024-10-03 21:18:38

您可能需要考虑不要将文件与表单的其余部分一起发布 - 有 充分的理由和其他方法您可以实现您想要的目标。

另外,请查看 这个问题这个建议 关于 MVC 中的文件上传。

You might want to consider not posting the files with the rest of the form- there are good reasons and other ways you can achieve what you want.

Also, check out this question and this advice regarding file uploads in MVC.

行雁书 2024-10-03 21:18:38

您可以将文件添加到视图模型中:

public class ImagesUploadModel
{
    ...
    public HttpPostedFileBase File1 { get; set; }
    public HttpPostedFileBase File2 { get; set; }
}

然后:

[HttpPost]
public ActionResult CreateArticle(ImagesUploadModel dataFromUser)
{
    if (ModelState.IsValid)
    {
        // Use dataFromUser.File1 and dataFromUser.File2 directly here
    }
    return RedirectToAction("index");
}

You could add the files to your view model:

public class ImagesUploadModel
{
    ...
    public HttpPostedFileBase File1 { get; set; }
    public HttpPostedFileBase File2 { get; set; }
}

And then:

[HttpPost]
public ActionResult CreateArticle(ImagesUploadModel dataFromUser)
{
    if (ModelState.IsValid)
    {
        // Use dataFromUser.File1 and dataFromUser.File2 directly here
    }
    return RedirectToAction("index");
}
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