Question

我想将列表中的所有项目添加到ViewBag中。我想要类似的东西：

ViewBag.Date = item1，item2，item3 .....

我的代码仅将列表中的一项（第一个索引）返回到ViewBag。我希望将其分开，因为我想使用该项目在视图中绘制条形图。我也不介意在“剃刀视图”中循环播放。

控制器

   public  ActionResult RimChart()
    {

        List<RimCalcs> listOfCategggories = null;

        Connectors aConn = Connectors.GetInstance();
        listOfCategggories = aConn.GetRimCalc();
        //var dates = listOfCategggories.Select(x => x.Date);
       // var profits = listOfCategggories.Select(y => y.Rprofit);
        ViewBag.list  = listOfCategggories;

        foreach (RimCalcs c in listOfCategggories)
        {

            ViewBag.Date = c.Date;
        }

        foreach (RimCalcs d in listOfCategggories)
        {

            ViewBag.profit = d.Rprofit;

        }
        return View();
    }

剃刀视图

@Html.Raw(@ViewBag.Date);

@using Newtonsoft.Json;

 @{
var profit = JsonConvert.SerializeObject(ViewBag.profit);
var date = JsonConvert.SerializeObject(ViewBag.Date);

}

<!DOCTYPE html>
 <html>
 <head>
 <meta name="viewport" content="width=device-width" />
<title>Charts</title>
<script  src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.2.2/Chart.bundle.min.js"></script>
<script>

        var barChartData =
            {
                labels: [@Html.Raw(date)], //the names displayed on the x-axis, see images below
            datasets: [{
                label: 'ProductWise Sales Count',
                backgroundColor: [
                    "#f990a7",
                    "#aad2ed",
                    "#9966FF",
                    "#99e5e5",
                    "#f7bd83",
                ],
                borderWidth: 2,
                data: [@profit]  //what you returned back from controller. values displayed on the y-axis, see images below
                }]
            };

                window.onload = function () {
                    var ctx1 = document.getElementById("barcanvas").getContext("2d");
                    window.myBar = new Chart(ctx1,
                        {
                            type: 'bar',
                            data: barChartData,
                            options:
                            {
                                title:
                                {
                                    display: true,
                                    text: "ProductWise Sales Count"
                                },
                                responsive: true,
                                maintainAspectRatio: true
                            }
                        });
                }
</script>
</head>
<body>
 <div style="text-align: center">
    <canvas id="barcanvas"></canvas>
 </div>
  <div style="text-align: center">
     Disclaimer:- This data is for demo it is
    not real data it wont relate to any company
 </div>
 </body>
 </html>

Answer 1

为什么不将整个listOfCategggories传递给视图。然后只需在json中序列化模型即可。那么您可以在脚本中将模型用作JSON对象

控制器

  public ActionResult RimChart()
        {
            return View(aConn.GetRimCalc());
        }

视图

  @model List<RimCalcs> 
    @{
     var jsonData = @Html.Raw(Json.Serialize(@Model));
    }

<script>
// do your thing
</script>

将列表中的项目循环到Controller中的ViewBag中

1 个答案: