在局部视图中将 List<ComplexObject> 传递给 Url.Action

Question

我正在尝试使用 MVC Chart Helpers 在我的页面上显示一些图表。为此，我有一个视图 DisplaySales，在该视图上我有多个局部视图。我的部分内容之一是 _PlanwiseSales，我想在其中绘制一个饼图。在加载 DisplaySales 视图时，我正在查询数据库并获取多个表中的所有必需数据，并将其映射到相应的类。下面是我的类和填充这些的代码：

public class DashboardView
{
        [JsonProperty("Table")]
        public List<CounterView> Counters { get; set; }
        [JsonProperty("Table1")]
        public List<PlanwiseSalesView> PlanwiseSalesView { get; set; }
        [JsonProperty("Table2")]
        public List<DaywiseSalesView> DaywiseSalesView { get; set; }
        [JsonProperty("Table3")]
        public List<StorewiseSalesView> StorewiseSalesView { get; set; }
        [JsonProperty("Table4")]
        public List<ProductwiseSalesView> ProductwiseSalesView { get; set; }
        [JsonProperty("Table5")]
        public List<PartnerSalesView> SalesView { get; set; }
 }
    public class PlanwiseSalesView
    {
        public string PlanTypeName { get; set; }
        public int Quantity { get; set; }
    }



/// <summary>
/// Shows Sales screen
/// </summary>
/// <returns> </returns>
[Route("store-sales/{id}/{startDate?}/{endDate?}")]
public async Task<ActionResult> DisplaySales(string id , DateTime? startDate, DateTime? endDate)
 {
    var dashboard= await new PartnerServices().GetPartnerSalesFigures(id, startDate, endDate );


            var partners = await new PartnerServices().GetAllChannelPartnersOfAStore(id);
            ViewBag.Partners = partners;
            ViewBag.Header = $"Sales";
            return View(dashboard);
 }

使用这部分代码呈现分部视图并将列表传递给 DisplaySales 视图上的分部视图

 <div class="col-md-3">
        @{
            Html.RenderPartial("~/Views/Shared/_PlanwiseSales.cshtml", Model.PlanwiseSalesView);
        }
    </div>

_Planwisesales.cshtml

@using GoWarranty.Models;

@model   List<PlanwiseSalesView>

<div class="card">
    <div class="card-body">
        <div class="d-md-flex align-items-center">
            <div>
                <h4 class="card-title">Plan wise Sales of <span class="badge badge-pill badge-purple font-bold text-uppercase">@string.Format("{0}", ViewBag.StoreName)</span></h4>
            </div>
        </div>
        <div class="row">
           
            <img src="@Url.Action("ShowPlanwiseSales", "Sales", new { chartdata =Model})" alt="@string.Format("Plan wise Sales of {0}", ViewBag.StoreName)" />
        </div>
    </div>
</div>

C# - Planwisesales 局部视图

 [HttpGet]
        public ActionResult ShowPlanwiseSales(List<PlanwiseSalesView> chartdata)
        {
            var chart = new Chart(width: 400, height: 400)
                .AddSeries(chartType: "pie",
                            xValue: chartdata, xField: "PlanTypeName",
                            yValues: chartdata, yFields: "Quantity")
                            .AddTitle("Plan wise sales")
                            .GetBytes("png");
            return File(chart, "image/bytes");
        }

问题

我的问题是我在 ShowPlanwiseSales 操作方法的参数图表数据中得到计数 ==0。预期结果将是从父视图传递的项目数。在我的例子中，我从父视图的部分视图模型中获取了 2 个项目。

请注意我试过用这两种形式写Url.Action

Url.Action("ShowPlanwiseSales", "Sales", new { chartdata =Json.Encode( Model)});
Url.Action("ShowPlanwiseSales", "Sales", new { chartdata = Html.Raw(Json.Encode( Model))});

Answer 1

您的代码将生成无法反序列化的 url，如：/Sales/ShowPlanwiseSales?chartdata=[{"PlanTypeName":"xx","Quantity":xx},{"PlanTypeName":"xx","Quantity":xx}]。您需要发送这样的请求：/Sales/ShowPlanwiseSales?[0].PlanTypeName=xx&[0].Quantity=xx&[1].PlanTypeName=xx&[1].Quantity=xx.

更改以下代码：

@{
    var qs = HttpUtility.ParseQueryString("");
    for(int i =0;i<Model.Count();i++)
    {
        for(int j =0;j< Model[i].GetType().GetProperties().Length;j++)
        {
            var name = Model[i].GetType().GetProperties()[j].Name;
            var keyname = "[" + i + "]." + name;
            var value = Model[i].GetType().GetProperty(name).GetValue(Model[i], null).ToString();
            qs.Add(keyname, value);
        }

    }
}

<img src="@Url.Action("ShowPlanwiseSales", "Sales" )?@qs" />

在局部视图中将 List<ComplexObject> 传递给 Url.Action

Passing List<ComplexObject> to Url.Action inside a partial view

c#

asp.net-mvc

asp.net-core

charts

partial-views

_Planwisesales.cshtml

C# - Planwisesales 局部视图

问题