Question

这是我的ViewModel

public class FaultTypeViewModel
{
    [HiddenInput(DisplayValue = false)]
    public int TypeID { get; set; }

    [Required(ErrorMessageResourceType = typeof(AdministrationStrings), ErrorMessageResourceName = "FaultTypeNameRequired")]
    [Display(ResourceType = typeof(AdministrationStrings), Name = "FaultTypeName")]
    public string TypeName { get; set; }

    [Display(ResourceType = typeof(AdministrationStrings), Name = "FaultTypeDescription")]
    [DataType(DataType.MultilineText)]
    public string TypeDescription { get; set; }

    [Display(ResourceType = typeof(AdministrationStrings), Name = "FaultTypeImageFile")]
    public HttpPostedFileBase TypeImageFile { get; set; }

    [HiddenInput(DisplayValue = false)]
    public string TypeImageURL { get; set; }
}

注意我有一个“TypeImageFile”HttpPostedFileBase 我希望模型绑定器可以将该属性从表单绑定到模型传递给控制器，我只是继续接收空值。

这是视图中的相关代码：

@using (Html.BeginForm("AddFaultType","Administration", FormMethod.Post))
{

    <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal" aria-hidden="true">
            ×</button>
        <h3 id="myModalLabel">@SharedStrings.Add @SharedStrings.FaultType</h3>
    </div>
    <div class="modal-body">
        @Html.ValidationSummary(true)
        <div class="editor-label">
            @Html.LabelFor(model => model.TypeName)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.TypeName)
            @Html.ValidationMessageFor(model => model.TypeName)
        </div>
        <div class="editor-label">
            @Html.LabelFor(model => model.TypeDescription)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.TypeDescription)
            @Html.ValidationMessageFor(model => model.TypeDescription)
        </div>
        <div class="editor-label">
            @Html.LabelFor(model => model.TypeImageFile)
        </div>
        <div class="editor-field">
            <input type="file" name="TypeImageFile" id="TypeImageFile" />
        </div>
    </div>

    <div class="modal-footer">
        <input type="submit" value="@SharedStrings.Add" class="btn btn-primary" />
        @Html.ActionLink(SharedStrings.Cancel, "Index", "Administration", null, new { Class = "btn", data_dismiss = "modal", aria_hidden = "true" })
    </div>
}

这是控制器：

        [HttpPost]
        public ActionResult AddFaultType(FaultTypeViewModel i_FaultToAdd)
        {
            var fileName = Path.GetFileName(i_FaultToAdd.TypeImageFile.FileName);
            var path = Path.Combine(Server.MapPath("~/App_Data/uploads"), fileName);
            i_FaultToAdd.TypeImageFile.SaveAs(path);

            return RedirectToAction("Index");
        }

Answer 1

如果您希望能够上传文件，请务必在表单上将enctype属性设置为multipart/form-data：

@using (Html.BeginForm("AddFaultType", "Administration", FormMethod.Post, new { enctype = "multipart/form-data" }))
{
    ...
}

Answer 2

完成达林的答案：如果您希望能够上传文件，请确保已将表单上的enctype属性设置为multipart/form-data：

@using (Html.BeginForm("AddFaultType", "Administration", FormMethod.Post, new { enctype = "multipart/form-data" }))
{
    ...
}

要确保您的<input>作为模型的一部分传输到控制器，请使用Id和name的Html帮助器，如下所示：

<input type="file" id="@Html.IdFor(x=>x.HttpPostedFileBase)" name="@Html.NameFor(x=>x.HttpPostedFileBase)" accept=".csv,.txt"/>

在MVC5中工作，对不起，我找不到MVC3中可用的辅助对象的任何参考

HttpPostedFileBase没有绑定到模型

2 个答案: