当我想要上传文件时，发送另一个数据字段

Question

我有这个控制器用于上传文件

1. [HttpPost]
2. public JsonResult Upload（HttpPostedFileBase uploadedFile）
3. {
4. // uploadedFile参数，但是我无法获得其他字段，例如关于文件的新闻
5. }

这是我将文件发送到行动的java脚本

function UploadFile() {

    var form = $('#FormUpload')[0];
    var dataString = new FormData(form);
    $.ajax({
        url: '/Home/Upload',  
        type: 'POST',
        xhr: function () {  
            var myXhr = $.ajaxSettings.xhr();
            if (myXhr.upload) {  
                //myXhr.upload.onprogress = progressHandlingFunction
                myXhr.upload.addEventListener('progress', progressHandlingFunction, false); // For handling the progress of the upload
            }
            return myXhr;
        },
        //Ajax events
        success: successHandler,
        error: errorHandler,
        complete:completeHandler,
        // Form data
        data: dataString,
        //**********
        //i want send another filed with datastring but i can not

        //**********
        //Options to tell jQuery not to process data or worry about content-type.
        cache: false,
        contentType: false,
        processData: false
    });

}

这是我的观看代码 enter image description here

我希望将带有上传文件的textarea内容发送到操作 坦