<input type="file" id="img1" name="img1" />        <input type="file" id="img2" name="img2" />        <button id="btn_submit">multipart/form-data 提交</button>

<script>            $(function () {                $(‘#btn_submit‘).click(function () {                    var formdata = http://www.mamicode.com/new FormData();                    formdata.append("submittype", "Phone_addMN");                    formdata.append("glsort2", "256");                    formdata.append("content", "哈哈哈哈啊");                    formdata.append("channel", "街拍");                    formdata.append("lng", "123");                    formdata.append("lat", "121");                    formdata.append("file1", $(‘#img1‘)[0].files[0]);                    formdata.append("file2", $(‘#img2‘)[0].files[0]);                    $.ajax({                        url: "xxxxxxxx.ashx",                        type: ‘POST‘,                        data: formdata,                        dataType: ‘JSON‘,                        processData: false,                        contentType: false,                        success: function (result) {                            if (result.state) {                                var n = "";                            } else {                            }                        }                    });                });            });        </script>

  var model_submit = new             {                glsort2 = Common.ObjectToInt(_context.Request["glsort2"]),                content = Common.ObjectToString(_context.Request["content"]),                channel = Common.ObjectToString(_context.Request["channel"]),                Data = new List<Model.API.MicroNews.Phone_ModelSubmit.Item>(),                lng = Common.ObjectToString(_context.Request["lng"]),                lat = Common.ObjectToString(_context.Request["lat"])            };  for (int i = 0; i < _context.Request.Files.Count; i++)            {                var file = _context.Request.Files[i];                var extension = Path.GetExtension(file.FileName).ToLower();               ....            }