怎么先上传文件再提交整个表单

        // GET: /Admin/AddArticle        public ActionResult AddArticle()        {            ViewBag.AddDate = DateTime.Now;            ViewBag.FenleiID = new SelectList(db.Fenleis, "FenleiID", "FenleiName");            return View();        }        [HttpPost]        [ValidateInput(false)]        public ActionResult AddArticle(Article newArticle, HttpPostedFileBase image)        {            ViewBagtext = new MvcHtmlString("Content");            ViewBag.AddDate = DateTime.Now;            int articleid = db.SaveChanges();            if (ModelState.IsValid)            {                //这是标题图片上传方法                if (image != null)                {                    string year = DateTime.Now.Year.ToString();                    string month = DateTime.Now.Month.ToString("00");                    string day = DateTime.Now.Day.ToString("00");                    string fileFolder = string.Concat("Upload/", year, "/", month, "/", day);                    string path = HostingEnvironment.MapPath("~/" + fileFolder);                    if (!Directory.Exists(path))                    {                        //在Upload目录下创建了一个文件夹                           Directory.CreateDirectory(path);                    }                    string imagename = image.FileName;                    string fileType = Path.GetExtension(image.FileName).ToLower();                    if (fileType == ".jpeg" || fileType == ".jpg" || fileType == ".png" || fileType == ".gif")                    {                        Random ran = new Random();                        string name = DateTime.Now.ToString("yyyyMMdhhmmss") + ran.Next(9999) + fileType;                        image.SaveAs(Path.Combine(path, name));                        string imageurl = string.Concat(HostingEnvironment.ApplicationVirtualPath, fileFolder, "/", name);                        newArticle.ImageUrl = imageurl;                    }                }                //这是文件上传方法                foreach(string upload in Request.Files)                {                    if (Request.Files[upload].ContentLength<=0) continue;                        string year = DateTime.Now.Year.ToString();                        string month = DateTime.Now.Month.ToString("00");                        string day = DateTime.Now.Day.ToString("00");                        string fileFolder = string.Concat("Upload/", year, "/", month, "/", day);                        string path = HostingEnvironment.MapPath("~/" + fileFolder);                        if (!Directory.Exists(path))                        {                            //在Upload目录下创建了一个文件夹                               Directory.CreateDirectory(path);                        }                        string filename = Request.Files[upload].FileName;                        string fileType = Path.GetExtension(Request.Files[upload].FileName).ToLower();                        string nickName = Path.GetFileName(Request.Files[upload].FileName);                        Random ran = new Random();                        string name = DateTime.Now.ToString("YYyyMMdhhmmss") + ran.Next(9999) + fileType;                        Request.Files[upload].SaveAs(Path.Combine(path, name));                        AddTempAttachment(nickName, "/" + fileFolder + "/" + name, Convert.ToInt32(Session["userid"]));                }                db.Articles.Add(newArticle);                db.SaveChanges();                //将博文的id转换为字符串                if (Request.Files != null)                {                    try                    {                        int aid = newArticle.ArticleID;                        foreach (var att in GetAllTempAtt())                        {                            AddAttachment(aid, Convert.ToInt32(Session["userid"]), att.tempFilename, att.tempPath, DateTime.Now, "附件 描述");                        }                        DelTempAtt();                        //db.SaveChanges();                    }                    catch (Exception ex)                    {                        ViewBag.State = ex.Message;                    }                }                return RedirectToAction("Index","Home");            }            ViewBag.FenleiID = new SelectList(db.Fenleis, "FenleiID", "FenleiName", newArticle.FenleiID);            return View(newArticle);        }

@using (Html.BeginForm("AddArticle", "Admin", FormMethod.Post, new { enctype = "multipart/form-data" })){    @Html.ValidationSummary(true)    <fieldset>        <legend><h2>添加博文</h2></legend>        <div class="editor-label">            @Html.LabelFor(model => model.FenleiID)        </div>        <div class="editor-field">            @Html.DropDownList("FenleiID", "请选择")            @Html.ValidationMessageFor(model => model.FenleiID)        </div>        <div class="editor-label">            @Html.LabelFor(model => model.Title)        </div>        <div class="editor-field">            @Html.EditorFor(model => model.Title)            @Html.ValidationMessageFor(model => model.Title)        </div>        <div class="editor-label">            @Html.LabelFor(model => model.SubTitle)        </div>        <div class="editor-field">            @Html.EditorFor(model => model.SubTitle)            @Html.ValidationMessageFor(model => model.SubTitle)        </div>        <div class="editor-label">            @Html.LabelFor(model => model.ImageUrl)        </div>        <div class="editor-field">            <div>上传图片: <input type="file" name="image" /></div>            @Html.ValidationMessageFor(model => model.ImageUrl)        </div>        <div class="editor-label">            @Html.LabelFor(model => model.Content)        </div>        <div class="editor-field">        <textarea name="Content" id="htmlEdtior" cols="100" rows="25"></textarea>                        @Html.ValidationMessageFor(model => model.Content)        </div>        <div class="editor-label">            @Html.LabelFor(model => model.Tag)        </div>        <div class="editor-field">            @Html.EditorFor(model => model.Tag)<span>Tag之间请用英文“<font color="red" size="6">,</font>”分开</span>            @Html.ValidationMessageFor(model => model.Tag)        </div>        <div class="editor-label">            @Html.LabelFor(model => model.Keywords)        </div>        <div class="editor-field">            @Html.EditorFor(model => model.Keywords)            @Html.ValidationMessageFor(model => model.Keywords)        </div>        <div class="editor-label">            @Html.LabelFor(model => model.Summary)        </div>        <div class="editor-field">            @Html.TextAreaFor(model => model.Summary)            @Html.ValidationMessageFor(model => model.Summary)        </div>        <div class="editor-label">            @Html.LabelFor(model => model.AddDate)        </div>        <div class="editor-field">            @Html.TextBoxFor(model => model.AddDate, new { @class = "Wdate", onClick = "WdatePicker({isShowClear:false,readOnly:true,dateFmt:'yyyy-MM-dd HH:mm'});" })            @Html.ValidationMessageFor(model => model.AddDate)        </div>        <div class="editor-label">            @Html.LabelFor(model => model.Source)        </div>        <div class="editor-field">            @Html.EditorFor(model => model.Source)            @Html.ValidationMessageFor(model => model.Source)        </div>        <div class="editor-label">            @Html.LabelFor(model => model.IsRemmended)        </div>        <div class="editor-field">            @Html.CheckBoxFor(model => model.IsRemmended)            @Html.ValidationMessageFor(model => model.IsRemmended)        </div>        <div class="editor-label">            上传文件：        </div>        <div class="editor-field">            <input name="file1" id="file1" type="file" />            <input name="file2" id="file2" type="file" />            <input name="file3" id="file3" type="file" />            <input name="file4" id="file4" type="file" />            <input name="file5" id="file5" type="file" />        </div>        <p>            <input type="submit" value="Create" />        </p>    </fieldset>}

@using (Html.BeginForm("ImportPackage", "Package", FormMethod.Post, new { id = "UpLoadForm", enctype = "multipart/form-data" })){}<form id='formExport' enctype = 'application/x-www-form-urlencoded'  action='@Url.Action("ExportToExcel", "Package")'></form>---------这两个才是重点，实现的功能是图片的上传 和 excel 导出设置还可以再添加 form 用于提交，或者修改 UploadForm  的 enctype 后提交