Ajax表单不在ASP.NET MVC中发布

Question

我有一个表单，可以上传具有指定名称和类别的文件。 我已经设置好了，所以可以使用ajax.beginform调用在页面上发布文章。 当我单击“提交”时，除了重定向到页面外，它什么也没做。

形成：

@using (Ajax.BeginForm("AttachFile", "Attachments", null, new AjaxOptions { HttpMethod = "Post", UpdateTargetId = "filesuccess", OnSuccess = "addFileSuccess", OnFailure = "addFileFailure" }, new { enctype = "multipart/form-data" }))
        {
            <div class="modal-body" id="addfilemodaltext">
                <div class="form-group">
                    <div class="control-label">Select file to add to this collaboration:</div>
                    @Html.Hidden("CollaborationId", Model.Collaboration.Id)
                    <input type="file" name="FileContents" id="FileContents"/>                        
                </div>
                <div class="form-group">
                    <div class="control-label">Enter a description for this file: </div>
                    @Html.TextArea("FileDescription", null, new {@class = "form-control"})
                </div>
                <div class="form-group">
                    <div class="control-label">Select a Category for this file:</div>
                    @Html.DropDownList("categoryId", new SelectList(Model.AttachmentCategories, "Id", "Name"), new { @class = "form-control" })
                </div>
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-default" data-dismiss="modal">Cancel</button>
                <input type="submit" class="btn btn-primary" id="addfilebtn" value="Upload File" />
            </div>
        }

控制器：

[HttpPost]
    public ActionResult AttachFile(int CollaborationId, string FileDescription, int categoryId, HttpPostedFileBase FileContents)
    {
        if (FileContents != null && FileContents.ContentLength > 0)
        {
            var fileName = FileContents.FileName;
            var mimeType = FileContents.ContentType;                
            var fileLength = FileContents.ContentLength;
            byte[] fileData = new byte[fileLength];
            FileContents.InputStream.Read(fileData, 0, fileLength);

            var response = DchServiceUtility.ServiceClient.AddAttachmentToCollaboration(CollaborationId,
                CurrentUser.Id, mimeType, FileDescription, fileName, fileData, categoryId, AppSettings.ClientName);

        }

        return RedirectToAction("Details", "Collaborations", new { @id = CollaborationId });
    }

新的一件事是它开始无法解决操作“ AttachFile”。 我究竟做错了什么？

Answer 1

我认为您需要像这样添加enctype属性：

    @using (Ajax.BeginForm("YourAction", "YourController",
                    new AjaxOptions() { HttpMethod = "POST", //More options here },
                    new { enctype = "multipart/form-data"}))

编辑 ：您的代码具有硬编码的categoryId和CollaborationId

    @using (Ajax.BeginForm("AttachFile", "Home", null, new AjaxOptions { HttpMethod = "Post", UpdateTargetId = "filesuccess", OnSuccess = "addFileSuccess", OnFailure = "addFileFailure" }, new { enctype = "multipart/form-data" }))
    {
    <div class="modal-body" id="addfilemodaltext">
        <div class="form-group">
            <div class="control-label">Select file to add to this collaboration:</div>
            @Html.Hidden("CollaborationId", 1)
            <input type="file" name="FileContents" id="FileContents" />
        </div>
        <div class="form-group">
            <div class="control-label">Enter a description for this file: </div>
            @Html.TextArea("FileDescription", null, new { @class = "form-control" })
        </div>
        <div class="form-group">
            <div class="control-label">Select a Category for this file:</div>
             @Html.Hidden("categoryId", 1)
        </div>
    </div>
    <div class="modal-footer">
        <button type="button" class="btn btn-default" data-dismiss="modal">Cancel</button>
        <input type="submit" class="btn btn-primary" id="addfilebtn" value="Upload File" />
    </div>
    }

结果：