下拉框反填数据方法

  <select id="xm" onchange="ShowYS()" name="XMID">
                                    <option value="-1">-----请选择项目-----</option>
                                    @foreach (var item in ViewBag.XMZXlist)
                                    {
                                        if (ViewBag.FYBXshowlist.XMID == item.XMID)
                                        {
                                            <option value="@item.XMID" selected="selected">@item.Name</option>
                                        }
                                        else
                                        {
                                            <option value="@item.XMID">@item.Name</option>
                                        }
                                    }
                                </select>