https://ithelp.ithome.com.tw/questions/10194134

這是這是先前問的問題，大略上已經完成，後來我再追加查詢及上一個月下一個月功能

查詢功能我已經完成，剩下上下個月的問題
目前我已經把需要的資料都準備好，就剩下回傳給畫面
這部份想請問該如何實現?
查詢的html

<div class="row">
    <div class="col-md-12 ca">
        @using (Html.BeginForm("DrScheduleList", "DrSchedule", new { area = "Center" }, FormMethod.Post, new { id = "queryForm", @class = "form-inline" }))
        {
            <div class="box box-primary">
                <div class="box-body form-flex-container">
                    <div class="col-inner-wrapper">
                        <div class="row-flex">
                            <div class="col-input">
                                @Html.CTextBoxFor(m => m.YeartoString, hStatus, new { @class = "form-control" })
                            </div>
                            <div class="col-label">
                                <label class="control-label">年</label>
                            </div>
                        </div>
                        <div class="row-flex">
                            <div class="col-input">
                                @Html.CTextBoxFor(m => m.MonthtoString, hStatus, new { @class = "form-control" })
                            </div>
                            <div class="col-label">
                                <label class="control-label">月</label>
                            </div>
                        </div>
                        <button type="button" class="btn btn-default pull-right  next">下個月</button>
                        <button type="button" class="btn btn-default pull-right  previous">上個月</button>
                        <button type="submit" class="btn btn-primary pull-right">查詢</button>

                    </div><!--form-flex-container-->
                </div><!-- /.box-body -->
            </div><!-- /.box -->
        }<!-- /BeginForm -->
    </div>
    <!-- /.col -->
</div>

ajax

        //取得textbox年分
        var textboxyear = $("#YeartoString").val();
        //取得textbox月分
        var textboxmonth = $("#MonthtoString").val();


        var previoustomonth = textboxmonth - 1;
        //如果月份等於0則變成去年12月
        if (previoustomonth != 0) {
            var previousmonth = $("#MonthtoString").val(previoustomonth);
        } else if (previoustomonth == 0) {
            var previousmonth = $("#MonthtoString").val("12");
            var previoustoyear = textboxyear - 1;
            var previousyear = $("#YeartoString").val(previoustoyear);
        }

        var year = $("#YeartoString").val();
        var month = $("#MonthtoString").val();
       
        
        $.ajax({
            async: false,
            cache: false,
            type: "POST",
            url: "@(Url.Action("PreviousMonth", "DrSchedule", new { area = "Center" }))",
            dataType: "json",
            data: {             
                previousyear: year,
                previousmonth: month,
            },
            success: function (data) {

            },
            error: function () {
                alert('error');
            }
        });

    })

controller

  public ActionResult PreviousMonth(string previousyear, string previousmonth, DrScheduleQueryViewModel model)
        {
            UserInfoSession user = SessionUserInfo();
            DrScheduleService svc = new DrScheduleService();
            //醫師名單
            model.DrEmpList = svc.FindDrScheduleByMonth(user.CID, "");
            //已安排名單
            model.DrEmp = svc.FindpreDrsch(user.CID, previousyear, previousmonth);
            //產生畫面
            model.result = model.getMonthArray(previousyear, previousmonth, model.DrEmp);
            return View(model);
        }