c# - 使用 Google Maps API 绑定(bind)到 .ADO 模型时出错

Question

为什么会出现此错误？

Compiler Error Message: CS1061: 'System.Collections.Generic.IEnumerable' does not contain a definition for 'lat' and no extension method 'lat' accepting a first argument of type 'System.Collections.Generic.IEnumerable' could be found (are you missing a using directive or an assembly reference?)

.Ado 模型
国际、纬度、经度、内容

Controller

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using MapApp.Models;

namespace MapApp.Controllers
{
    [HandleError]
    public class HomeController : Controller
    {
        mapEntities _db = new mapEntities();

        public ActionResult Index()
        {
            return View(_db.river);
        }

        public ActionResult About()
        {
            return View();
        }
    }
}

查看

@model IEnumerable<MapApp.Models.river>
@{
    ViewBag.Title = "Index";
    Layout = "~/Views/Shared/_Layout.cshtml";
}
<h2> Index</h2>
<script type="text/javascript">
@foreach (var item in Model)
{
    <text>
      var markerlatLng = new google.maps.LatLng(@(Model.lat), @(Model.lng));
      var contents = '@(Model.contents)';

      var infowindow = new google.maps.InfoWindow({
          content: contents
      });

      var marker = new google.maps.Marker({
          position: markerlatLng,
          title: contents,
          map: map,
          draggable: false
      });

      google.maps.event.addListener(marker, 'click', function () {
          infowindow.open(map, marker);
      });

   </text>
}
</script>

Answer 1

Model 是 river 的可枚举。看起来你在河流中循环是正确的，但你在循环中错误地引用了每个项目。

尝试:

var markerlatLng = new google.maps.LatLng(@(item.lat), @(item.lng));
var contents = '@(item.contents)';

这应该可以解决问题。