如何将join sql查询表结果传递给另一种方法？

Question

我正在使用实体框架在 ASP.NET MVC 中工作。我的数据库中有两个表，AppointmentDb 和 StudentDb。我希望将它们加入控制器并将结果传递给控制器​​中的另一个操作方法。我在Details 操作中传递的这个新表的返回类型是什么？

public ActionResult Index(AdminViewModel model)
{
    if (ModelState.IsValid)
    {              
        var innerJoinQuery = from appointment in AppointmentDb
                             join student in StudentDb on appointment.StudentFirstName equals student.FirstName
                             select appointment;
        return View("Details",innerJoinQuery);
    }
}

public ActionResult Details(?????? innerJoinQuery)
{           
    return View();
}

编辑 1：

根据下面的答案，我编辑为：

    public ActionResult Details(IQueryable<Appointment> appointment)
    {

        return View(appointment);
    }

我仍然无法根据需要调用下面的列。其中一些像AppointmentID 来自AppointmentDb，其余来自StudentDb 下面是Details.cshtml的视图：

@model IQueryable<OdeToFood.Entities.Appointment>

@{
    ViewBag.Title = "Details";
}

<h2>Index</h2>
@Html.ActionLink("Back to Search", "Index")
<table class="table">
    <tr>
        <th>
            @Html.DisplayNameFor(model => model.AppointmentID)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.StudentFirstName)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.StudentID)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.AppointmentDate)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.AppointmentTime)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.Status)
        </th>
    </tr>
</table>

我应该如何使View 工作？

编辑 2：

我已按照编辑 1 中的建议进行了编辑。我的完整 View.cshtml 中还有另一个小错误。这是我收到的错误foreach cannot operate on Variables of type OdeToFood.ViewModels.AdminDetailsViewModel because it does not contain definition for GetEnumerator

@model AdminDetailsViewModel

@{
    ViewBag.Title = "Details";
}

<h2>Index</h2>
@Html.ActionLink("Back to Search", "Index")
<table class="table">
    <tr>
        <th>
            @Html.DisplayNameFor(model => model.AppointmentID)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.StudentFirstName)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.StudentLastName)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.StudentID)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.AppointmentDate)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.AppointmentTime)
        </th>
        <th>
            @Html.DisplayNameFor(model => model.Status)
        </th>
    </tr>

    @foreach (var item in Model)
    {
        <tr>
            <td>
                @Html.DisplayFor(modelItem => item.AppointmentID)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.StudentFirstName)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.StudentLastName)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.StudentID)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.AppointmentDate)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.AppointmentTime)
            </td>
            <td>
                @Html.DisplayFor(modelItem => item.Status)
            </td>
        </tr>
    }

</table>

Answer 1

您的查询代码返回IQueryable<AppointmentDb>：

 public ActionResult Details(IQueryable<AppointmentDb> innerJoinQuery)
 {           
        return View();
 }

方法二：

最好先执行你的查询：

var innerJoinQuery = (from appointment in AppointmentDb
                     join student in StudentDb 
                     on appointment.StudentFirstName equals student.FirstName
                     select appointment).ToList();

然后传递结果列表：

public ActionResult Details(List<AppointmentDb> innerJoinQuery)
{           
    return View();
}

编辑：

您需要创建一个类来保存来自多个表的数据：

class MyViewModel
{
    public int AppointmentID { set; get; }
    public string StudentFirstName { set; get; }
    // continue the rest
}

然后将您的查询更改为：

from appointment in AppointmentDb
join student in StudentDb
on appointment.StudentFirstName equals student.FirstName
select new MyViewModel()
{
    AppointmentID = AppointmentDb.AppointmentID,
    StudentFirstName = StudentDb.StudentFirstName
    // continue the rest
};

Answer 2

你可以使用对象类型

public ActionResult Details(object innerJoinQuery)
{           
   return View();
}