Question

嗨，我正在尝试通过视图模型将数据传递到局部视图以生成图形。

我在主视图中尝试了以下操作：

@{
    ViewBag.Title = "Report";
}
@model WebApplication1.ViewModel.DatapointLineViewModel

我以这种方式将ViewModel传递给局部视图：

 @{
  Html.RenderPartial("~/Views/Shared/_report_bar.cshtml",WebApplication1.ViewModel.DatapointLineViewModel); }

我正在尝试通过Viewbags在ViewModel中使用数据：

labels: @Html.Raw(ViewBag.DataPoints),

我遇到以下错误：

CS0119：“ DatapointLineViewModel”是一种类型，在给定上下文

这是我的视图模型：

 [DataContract]
    public class DatapointLineViewModel
    {

        public DatapointLineViewModel(string label, double y)
        {
            this.Label = label;
            this.Y = y;
        }

        //Explicitly setting the name to be used while serializing to JSON.
        [DataMember(Name = "label")]
        public string Label = "";

        //Explicitly setting the name to be used while serializing to JSON.
        [DataMember(Name = "y")]
        public Nullable<double> Y = null;
    }

控制器：

 public ActionResult BarChart()
        {
            List<DatapointLineViewModel> dataPoints = new List<DatapointLineViewModel>();

            dataPoints.Add(new DatapointLineViewModel("USA", 71));
            dataPoints.Add(new DatapointLineViewModel("Great Britain", 67));
            dataPoints.Add(new DatapointLineViewModel("China", 70));
            dataPoints.Add(new DatapointLineViewModel("Russia", 56));
            dataPoints.Add(new DatapointLineViewModel("Germany", 42));
            dataPoints.Add(new DatapointLineViewModel("Japan", 41));
            //dataPoints.Add(new DatapointLineViewModel("France", 42));
            //dataPoints.Add(new DatapointLineViewModel("South Korea", 21));

            ViewBag.DataPoints = JsonConvert.SerializeObject(dataPoints);

            return View();
        }

局部视图中的脚本：

 data: {
                labels: @Html.Raw(ViewBag.DataPoints),
                datasets: [
                    {
                        label: 'My First dataset',
                        data: WebApplication1.ViewModel.DatapointLineViewModel,
                        options: {
                            legend: {
                                display: false
                            }
                        },
                        backgroundColor: [
                            'rgba(152,235,239,0.8)',
                            'rgba(152,235,239,0.8)',
                            'rgba(152,235,239,0.8)',
                            'rgba(152,235,239,0.8)',
                            'rgba(152,235,239,0.8)',
                            'rgba(152,235,239,0.8)'],

                    },

为什么会这样？需要帮助：）。

Answer 1

您必须记住，此时要传递实际数据，而不是类型。

@{
    Html.RenderPartial("~/Views/Shared/_report_bar.cshtml", Model);
}

Model包含数据本身的实例，这就是您要传递给部分对象的内容。

将viewmodel传递到局部视图

1 个答案: