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我创建使用的Visual Studio 2015年与“EF设计师从数据库”如何创建C＃的OData V4实体关系
我有2实体的OData v4的项目，它们是SQL视图我从Microsoft SQL Server 2015年创建的，
我可以用简单的OData URI 本地主机中的数据：交/的OData/BookingInfoes（ 'BookingId'）或 localhsot：交/的OData/Timemarkers（ 'BookingId'）
我的问题是一个BookingInfo涉及到许多时间标记项目和 我无法使用命令？$ expand，i tri海关在谷歌很多的方法，但是仍然没有运气，
我想是这样
{BookingID:123,BookingDate:"sss",[TimeMarker:[{id:1,info:"sss"},{id:2,info:"balh bla"},{id:3,info:"foo foof oo"}]]}
请大家帮忙，这个卡我一个星期，我不知道该如何处理。
entiy BookingInfo
namespace wcod.Models
{
using System;
using System.Collections.Generic;
public partial class BookingInfo
{
public BookingInfo()
{
var TimeMarkerList = new List<TimeMarker>();
}
public string BookingID { get; set; }
public string BookingDate { get; set; }
public string BookName { get; set; }
public string ChiBookName { get; set; }
public string VideoSource_1500 { get; set; }
public string VideoSource_300 { get; set; }
public string VideoSource_Archive { get; set; }
public string MobileVideoSource { get; set; }
public string languages { get; set; }
public string SeekTime { get; set; }
public Nullable<int> IsVideo { get; set; }
public string AvailableLangs { get; set; }
public Nullable<int> StatusMarkers { get; set; }
public string BookRoomID { get; set; }
public Nullable<System.DateTime> StartTime { get; set; }
public Nullable<int> nexturl { get; set; }
public string StrBookingStartTime { get; set; }
public string BookomgStatus { get; set; }
public virtual ICollection<TimeMarker> TimeMarkers { get; set; }
}
}
TimeMarker也从SQL视图生成
namespace wcod.Models
{
using System;
using System.Collections.Generic;
public partial class TimeMarker
{
public Nullable<long> nrow { get; set; }
public Nullable<System.DateTime> StartTime { get; set; }
public Nullable<int> OrderNo { get; set; }
public string MeetingID { get; set; }
public string AgendaName { get; set; }
public string ChiAgendaName { get; set; }
public int AgendaCode { get; set; }
public string AgendaTime { get; set; }
public string SpeakerCode { get; set; }
public Nullable<int> MarkerID { get; set; }
public string AgendaRunningTime { get; set; }
public Nullable<bool> AllLangFail { get; set; }
public Nullable<bool> isLive { get; set; }
public string PopUpMsg { get; set; }
public Nullable<bool> HasVideo { get; set; }
public string TimeMarkerId { get; set; }
public virtual BookingInfo BookingInfo { get; set; }
}
}
WebApiConfig
using Newtonsoft.Json;
using Newtonsoft.Json.Serialization;
using System.Web.Http;
using System.Web.Http.OData.Builder;
using System.Web.Http.OData.Extensions;
using System.Web.OData.Extensions;
using wcod3.Models;
namespace wcod3
{
public static class WebApiConfig
{
public static void Register(HttpConfiguration config)
{
// Web API configuration and services
ODataModelBuilder builder = new ODataConventionModelBuilder();
config.Count().Filter().OrderBy().Expand().Select().MaxTop(null);
var json = config.Formatters.JsonFormatter;
json.SerializerSettings.PreserveReferencesHandling = Newtonsoft.Json.PreserveReferencesHandling.Objects;
config.Formatters.Remove(config.Formatters.XmlFormatter);
config.Formatters.Remove(config.Formatters.XmlFormatter);
config.Formatters.JsonFormatter.SerializerSettings.Formatting = Formatting.Indented;
config.Formatters.JsonFormatter.SerializerSettings.ContractResolver = new CamelCasePropertyNamesContractResolver();
// var json = config.Formatters.JsonFormatter;
builder.EntitySet<TimeMarker>("TimeMarkers");
builder.EntitySet<MeetingInfo>("BookingInfoes");
config.MapHttpAttributeRoutes();
config.Routes.MapHttpRoute(
name: "DefaultApi",
routeTemplate: "api/{controller}/{id}",
defaults: new { id = RouteParameter.Optional }
);
config.Routes.MapODataServiceRoute("odata", "odata/v4", builder.GetEdmModel());
}
}
}
这里是我的BookingsController
继承人是个ËTimeMarkersController
[EnableQuery]
public IQueryable<TimeMarker> GetTimeMarkers()
{
return db.TimeMarkers;
}
// GET: odata/TimeMarkers(5)
[EnableQuery]
public List<TimeMarker> GetTimeMarker([FromODataUri] string key)
{
// return SingleResult.Create(db.TimeMarkers.Where(timeMarker => timeMarker.MeetingID == key));
// return List
return db.TimeMarkers.Where(timeMarker => timeMarker.MeetingID == key).ToList() ;
}
public List<MeetingInfo> GetMeetingInfo([FromODataUri] string key)
{
return db.MeetingInfoes.Where(mi => mi.MeetingID == key).ToList();
}
和packages.config
<?xml version="1.0" encoding="utf-8"?>
<packages>
<package id="EntityFramework" version="6.1.3" targetFramework="net452" />
<package id="Microsoft.AspNet.OData" version="6.0.0" targetFramework="net452" />
<package id="Microsoft.AspNet.WebApi" version="5.2.3" targetFramework="net452" />
<package id="Microsoft.AspNet.WebApi.Client" version="5.2.3" targetFramework="net452" />
<package id="Microsoft.AspNet.WebApi.Core" version="5.2.3" targetFramework="net452" />
<package id="Microsoft.AspNet.WebApi.WebHost" version="5.2.3" targetFramework="net452" />
<package id="Microsoft.CodeDom.Providers.DotNetCompilerPlatform" version="1.0.0" targetFramework="net452" />
<package id="Microsoft.Data.Edm" version="5.6.0" targetFramework="net452" />
<package id="Microsoft.Data.OData" version="5.6.0" targetFramework="net452" />
<package id="Microsoft.Extensions.DependencyInjection" version="1.0.0" targetFramework="net452" />
<package id="Microsoft.Extensions.DependencyInjection.Abstractions" version="1.0.0" targetFramework="net452" />
<package id="Microsoft.Net.Compilers" version="1.0.0" targetFramework="net452" developmentDependency="true" />
<package id="Microsoft.OData.Core" version="7.0.0" targetFramework="net452" />
<package id="Microsoft.OData.Edm" version="7.0.0" targetFramework="net452" />
<package id="Microsoft.Spatial" version="7.0.0" targetFramework="net452" />
<package id="Newtonsoft.Json" version="10.0.3" targetFramework="net452" />
<package id="System.Spatial" version="5.6.0" targetFramework="net452" />
</packages>
http://localhost:49347/odata/v4/TimeMarkers('id')/?$expand=BookingInfo
http://localhost:49347/odata/v4/TimeMarkers('id')?$expand=BookingInfo
http://localhost:49347/odata/v4/MeetingInfoes('id')/?$expand=TimeMarkers
http://localhost:49347/odata/v4/MeetingInfoes('id')?$expand=TimeMarkers
所有4网址显示父内容只以上，我真的希望他们表现出一起。 请帮忙。
尝试的http：//本地主机：端口/的OData/V4/BookingInfoes（” xxxx'），但只有BookingInfo显示，没有timeMarker dis玩然后我试着跟着这个[http://www.entityframeworktutorial.net/entity-relationships.aspx]仍然没有 – user2285201
你尝试localhost：port/odata/v4/BookingInfoes（'xxxx'）？$ expand = TimeMarkers？如果您不在查询字符串中添加$ expand，那么您看到只有BookingInfo –
我更新了该类，现在仅显示父级内容。 – user2285201