Question

我正在创建一个文档库应用程序，其DocumentController需要上传库中每个文件的缩略图。我想将“文件上载”字段保留在与其他字段（标题，描述，类别等）相同的“创建/编辑”表单中。问题是我不确定我是否可以混合或嵌套

的表单标签

Html.BeginForm("Create", "Document", FormMethod.Post, enctype = "multipart/form-data")

和

Html.BeginForm()

我的观点如下：

 <%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage<Publications.WebUI.Models.DocumentEditViewModel >" %>

<asp:Content ID="Content1" ContentPlaceHolderID="TitleContent" runat="server">
    Edit
</asp:Content>
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
    <fieldset>
        <legend>Edit
            <%=  Html.Truncate(Model.Document.Title, 50)%></legend>
        <%= Html.ValidationSummary(false) %>
        <% using (Html.BeginForm())
           { %>
        <div class="editor-label">
            <%= Html.LabelFor(model => model.Document.Title) %>
        </div>
        <div class="editor-field">
            <%= Html.HiddenFor(model => model.Document.DocumentId ) %>
            <%= Html.ValidationMessageFor(model => model.Document.Title) %>
            <%= Html.TextBoxFor(model => model.Document.Title)%>
        </div>
        <div class="editor-label">
            <%= Html.LabelFor(model => model.Document.DocumentUrl)%>
        </div>
        <div class="editor-field">
            <%= Html.ValidationMessageFor(model => model.Document.DocumentUrl)%>
            <%= Html.TextBoxFor(model => model.Document.DocumentUrl)%>
        </div>
        <div class="editor-label">
            <%= Html.LabelFor(model => model.Document.Description)%>
        </div>
        <div class="editor-field">
            <%= Html.ValidationMessageFor(model => model.Document.Description)%>
            <%= Html.TextAreaFor(model => model.Document.Description) %>
        </div>
        <div class="editor-label">
            <%= Html.LabelFor(model => model.Document.ThumbnailUrl )%>
        </div>
        <div class="editor-field">
            <% using (Html.BeginForm("Create", "Document",
                    FormMethod.Post, new { enctype = "multipart/form-data" }))
               {%>
            <%= Html.ValidationMessageFor(model => model.Document.ThumbnailUrl )%>
            <input name="uploadFile" type="file" />
            <% } %>
        </div>
        <div class="formActions">
            <div class="backNav">
                <%= Html.ActionLink("< Back to List", "Index") %>
            </div>
            <div class="submit">
                <input type="submit" value="Save" />
            </div>
            <% } %>
        </div>
    </fieldset>
</asp:Content>

我的控制器只接受文档模型和HttpPostedFileBase并尝试将文件上传到服务器并将文档保存到存储库

 [HttpPost]
 public ActionResult Create(Document document, HttpPostedFileBase uploadFile)
 {

     if (ModelState.IsValid)
     {
         //Process file upload
         //Update repository

      }

       return View("List");
  }

所以我想知道是否有可能在同一个动作上进行文件上传和更新存储库，我应该如何构建我的视图来促进这一点。

Answer 1

我查看了Steve Sanderson的好书（Pro ASP.NET MVC 2 Framework），他的Sports Store示例应用程序有一个文件上传表单，其中有标准表单元素与文件上传“multipart / form-data”相混合元件。所以看起来多部分类型足以满足页面上的所有表单元素。虽然上传的图像正在db中保存，但我确信我可以在同一个Action中执行一个file.SaveAs（）。谢谢桑德森先生。希望你不介意我复制你的代码...

查看

<asp:Content ContentPlaceHolderID="MainContent" runat="server"> <h1>Edit <%= Model.Name %></h1> <% using (Html.BeginForm("Edit", "Admin", FormMethod.Post, new { enctype = "multipart/form-data" })) { %> <%= Html.Hidden("ProductID") %> <p> Name: <%= Html.TextBox("Name") %> <div><%= Html.ValidationMessage("Name") %></div> </p> <p> Description: <%= Html.TextArea("Description", null, 4, 20, null) %> <div><%= Html.ValidationMessage("Description") %></div> </p> <p> Price: <%= Html.TextBox("Price") %> <div><%= Html.ValidationMessage("Price") %></div> </p> <p> Category: <%= Html.TextBox("Category") %> <div><%= Html.ValidationMessage("Category") %></div> </p> <p> Image: <% if(Model.ImageData == null) { %> None <% } else { %> <img src="<%= Url.Action("GetImage", "Products", new { Model.ProductID }) %>" /> <% } %> <div>Upload new image: <input type="file" name="Image" /></div> </p> <input type="submit" value="Save" />    <%=Html.ActionLink("Cancel and return to List", "Index") %> <% } %> </asp:Content>

<强> CONTROLLER

[AcceptVerbs(HttpVerbs.Post)] public ActionResult Edit(Product product, HttpPostedFileBase image) { if (ModelState.IsValid) { if (image != null) { product.ImageMimeType = image.ContentType; product.ImageData = new byte[image.ContentLength]; image.InputStream.Read(product.ImageData, 0, image.ContentLength); } productsRepository.SaveProduct(product); TempData["message"] = product.Name + " has been saved."; return RedirectToAction("Index"); } else // Validation error, so redisplay same view return View(product); }

MVC：如何将文件上载和其他表单字段发布到一个操作

1 个答案: