如何将对象列表从控制器传递给视图？

Question

我的控制器中有一些数据（数据合同列表）。我想在我的视图中显示该列表的字段/值。我该如何正确执行此操作？

这是我获取列表数据的控制器中的代码：

public List<ShipmentDataContract> Get(long shipmentServiceId)
        {
            Logging.Instance.Info($"Shipment request came in for shipment with ShipmentServiceId = {shipmentServiceId}");
            ShipmentQueryResult shipmentQueryResult = GetShipmentByShipmentServiceIdResult(shipmentServiceId);
            Logging.Instance.Debug($"Shipment queried with ShipmentServiceId = {shipmentServiceId}");
            List<ShipmentDataContract> shipmentDataContracts = GetShipmentsFromResult(shipmentQueryResult);
            Logging.Instance.Info($"Shipment retrieved for shipment with ShipmentServiceId = {shipmentServiceId}.");
            return shipmentDataContracts;
        }

此方法returns 数据合同列表（在本例中只有一个）。

我也在同一个控制器中创建了一个测试方法，也在 Index 方法中：

public ActionResult Index()
        {
            var shipmentDataTest = Get(94);

            ViewBag.shipmentTestData = shipmentDataTest;

            return View();
        }

当我调试后端时，它returns正确的发货（ID 94）。

现在我想在我的视图中显示发货信息。

我在我看来做了一个变量：

<script>
    var shipmentTestData = '@ViewBag.shipmentTestData';
</script>

并在我的 Vue 应用程序文件中分配了正确的值：

var Vue = new Vue({
    el: "#vueapp",
    components: ["error"],
    data: {
        shipmentTestData: shipmentTestData
    }
});

当我调用数据时，它不会显示值，而是一个通用字符串。

<p>{{ shipmentTestData }}</p>

它returns这个：

System.Collections.Generic.List`1[ShipmentDataContract]

有人知道如何解决这个问题吗？出于某种原因，我分配的变量是格式字符串，这导致了我假设的这个问题，但我该如何解决这个问题？

Answer 1

如果你想将列表用作字符串，你可以像这样发送结果

 IList<string> someStrings = Get(94); // i assume than get method returns a list of "strings"
 string joined = string.Join(",", someStrings );
 ViewBag.shipmentTestData = joined;

现在您要将 "shipmentDataTest" 列表作为逗号分隔列表发送给前端。让我知道这是否是您要找的东西。你好。

Answer 2

这是正确的方法。

型号：

   public class ShipmentData
   {
       Task<List<ShipmentDataContract>> Get(long shipmentServiceId)
       {
          return YourList;
       }

控制器：

  public ActionResult Index()
    {
        var shipmentDataTest = ShipmentData.Get(//index);

        return View(shipmentDataTest);
    }

查看：

    @Model YourShipmentModel
    //here you can call Model.variable

如何将对象列表从控制器传递给视图？

How do I pass a list of objects from controller to view?

c#

model-view-controller

list

datacontract

vue.js