Question

这是有效的，现在由于原因不明，我的文件集合为空

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@section termimalContent {
      @using (Html.BeginForm("Add", "Terminals_Policies", FormMethod.Post, new { enctype = "multipart/form-data" }))
      {
        @Html.ValidationSummary(true)
        <fieldset>
          <legend>
            <h2>
              Create new policy</h2>
          </legend>
          <p>
            <strong>Assigning devices to Node:</strong> @Model.GroupName</p>
          <div class="editor-label">
            @Html.LabelFor(model => model.PolicyName)
          </div>
          <div class="editor-field">
            @Html.EditorFor(model => model.PolicyName)
            @Html.ValidationMessageFor(model => model.PolicyName)
          </div>
          <div class="editor-label">
            @Html.LabelFor(model => model.PolicyType)
          </div>
          <div class="editor-field">
            @Html.DropDownListFor(model => model.SelectedItem, new SelectList(Model.PolicyType, "Value", "Text"),new {@class = "PackageDDL"})
            @Html.ValidationMessageFor(model => model.SelectedItem)
          </div>

           @foreach (var pick in Model.PackageTypeItems)
           {
            <div class="editor-label">
              <label for="@pick.Name">
                @pick.Name:</label>
            </div>
            <div class="editor-field">
              <input class="text-box single-line" type="file" name="@pick.Name.Trim()" id="@pick.Name.Trim()" data-val="@pick.IsRequired.ToString().ToLower()" data-val-required="Please select a file" />
              @Html.ValidationMessage(pick.Name.Trim())
            </div>
           }

          @Html.HiddenFor(model => model.GroupId)
          @Html.HiddenFor(model => model.GroupName)
          <p>
            <input type="submit" value="Create" />
          </p>
        </fieldset>
      }
    }

HTML生成

<form action="/Terminals_Policies/Add/1" enctype="multipart/form-data" method="post">    <fieldset>
      <legend>
        <h2>
          Create new policy</h2>
      </legend>
      <p>
        <strong>Assigning devices to Node:</strong> Root</p>
      <div class="editor-label">
        <label for="PolicyName">PolicyName</label>
      </div>
      <div class="editor-field">
        <input class="text-box single-line" data-val="true" data-val-length="Policy name cannot be longer than 50 characters." data-val-length-max="50" data-val-required="Please enter the policy name" id="PolicyName" name="PolicyName" type="text" value="" />
        <span class="field-validation-valid" data-valmsg-for="PolicyName" data-valmsg-replace="true"></span>
      </div>
      <div class="editor-label">
        <label for="PolicyType">PolicyType</label>
      </div>
      <div class="editor-field">
        <select class="PackageDDL" data-val="true" data-val-number="The field SelectedItem must be a number." id="SelectedItem" name="SelectedItem"><option value="1">IT application</option>
<option value="3"> definition</option>
<option value="4">definition</option>
<option value="5">project</option>
<option value="6">relay schedules</option>
<option value="7">table data</option>
<option value="9">transfer definition</option>
<option value="10">firmware update request</option>
<option value="11"> firmware update request</option>
<option value="12">dat</option>
<option value="15"> firmware</option>
<option value="16"> hex</option>
<option value="17">project</option>
<option value="18">firmware</option>
</select>
        <span class="field-validation-valid" data-valmsg-for="SelectedItem" data-valmsg-replace="true"></span>
      </div>

        <div class="editor-label">
          <label for="IT application file                               ">
            IT application file                               :</label>
        </div>
        <div class="editor-field">
          <input class="text-box single-line" type="file" name="IT application file" id="IT application file" data-val="true" data-val-required="Please select a file" />
          <span class="field-validation-valid" data-valmsg-for="IT application file" data-valmsg-replace="true"></span>
        </div>

      <input data-val="true" data-val-number="The field GroupId must be a number." data-val-required="The GroupId field is required." id="GroupId" name="GroupId" type="hidden" value="1" />
      <input id="GroupName" name="GroupName" type="hidden" value="Root" />
      <p>
        <input type="submit" value="Create" />
      </p>
    </fieldset>
</form>

控制器：

 [HttpGet]
    public ActionResult Add(int id)
    {
      _polAdd = CreatePolicyAddModel(id);
      return View(_polAdd);
    }

    [HttpPost]
    public ActionResult Add(IEnumerable<HttpPostedFileBase> files, vmPoliciesAdd model)
    {
      _policyLogic.AddPolicyFile(files,model.PolicyName,(int)model.SelectedItem, "FILE");
      return View();
    }

在控制器的后期动作中，colelction是空的，任何人都可以看到一个明显的错误

Answer 1

命名问题：

<input class="text-box single-line" type="file" name="IT application file" id="IT application file" data-val="true" data-val-required="Please select a file" />

当然应该是：

<input class="text-box single-line" type="file" name="files" id="IT application file" data-val="true" data-val-required="Please select a file" />

因此，如果您希望模型绑定器能够绑定到名为files的操作参数，请确保您的Razor代码并确保已将正确的名称应用于文件输入：

<input class="text-box single-line" type="file" name="files" id="@pick.Name.Trim()" data-val="@pick.IsRequired.ToString().ToLower()" data-val-required="Please select a file" />

啊，id的方式不能包含空格。所以你有一个破碎的HTML。以下似乎是错误的：id="@pick.Name.Trim()"。

MVC文件上载集合始终为null

1 个答案: