如何在ASP.NET-MVC中将匿名类型绑定到viewModel

Question

我需要将匿名类型输出绑定到viewmodel才能在视图上传递它。 我需要将复选框与模型值绑定在一起，我正在使用join来获取值，但不知道如何将其传递给视图。 我的加入查询是

var v = (from pd in ge.Costs
                 join od in ge.Services on pd.ServiceId equals od.ServiceId
                 join ct in ge.ServiceTypes on pd.ServiceTypeId equals ct.ServiceTypeId
                 where pd.ServiceTypeId.Equals(2)
                 select new
                 {
                      pd.CostId,
                     od.serviceName,
                     ct.ServiceTypeValue,
                     pd.ServiceCost
                 }).ToList();

我的viewModel是

public class costViewModel
{
    public int CostId { get; set; }
    public string serviceName { get; set; }
    public string ServiceTypeValue { get; set; }
    public string ServiceCost { get; set; }
}

我需要将CostId，serviceName，ServiceTypeValue，ServiceCost绑定到视图模型以在视图中传递它

在视图上检索模型是

@foreach (var item in Model)
{

    <input type="checkbox" name="@item.serviceName" id="@item.serviceName" value="@item.ServiceCost">@item.

   }

请帮忙。

Answer 1

不要让您的选择查询匿名，只需将您的选择与viewModed一起传递

 var v = (from pd in ge.Costs
                 join od in ge.Services on pd.ServiceId equals od.ServiceId
                 join ct in ge.ServiceTypes on pd.ServiceTypeId equals ct.ServiceTypeId
                 where pd.ServiceTypeId.Equals(2)
               select new costViewModel()
               {
                   CostId = pd.CostId,
                   serviceName = od.serviceName,
                   ServiceTypeValue = ct.ServiceTypeValue,
                   ServiceCost = pd.ServiceCost
               }).ToList();
view(v);

然后在视图模型中传递v

并在查看页面上使用

@model IEnumerable<project.ViewModel.costViewModel>

Answer 2

尝试使用costViewModel将值传递到您的View中，因此，简而言之，不要让您的select匿名，创建一些所需的对象并将v传递给View：

在您的控制器中：

var v = (from pd in ge.Costs
             join od in ge.Services on pd.ServiceId equals od.ServiceId
             join ct in ge.ServiceTypes on pd.ServiceTypeId equals ct.ServiceTypeId
             where pd.ServiceTypeId.Equals(2)
             select new costViewModel()
             {
                 CostId = pd.CostId,
                 serviceName = od.serviceName,
                 ServiceTypeValue = ct.ServiceTypeValue,
                 ServiceCost = pd.ServiceCost
             }).ToList();

return View(v);

并在您的视图中：

@model List<costViewModel>

Answer 3

var v = (from pd in ge.Costs
                 join od in ge.Services on pd.ServiceId equals od.ServiceId
                 join ct in ge.ServiceTypes on pd.ServiceTypeId equals ct.ServiceTypeId
                 where pd.ServiceTypeId.Equals(2)
                 select new costViewModel
                 {
                     CostId = pd.CostId,
                     serviceName = od.serviceName,
                     ServiceTypeValue = ct.ServiceTypeValue,
                     ServiceCost = pd.ServiceCost
                 }).ToList();

或匿名

var v = (from pd in ge.Costs
                     join od in ge.Services on pd.ServiceId equals od.ServiceId
                     join ct in ge.ServiceTypes on pd.ServiceTypeId equals ct.ServiceTypeId
                     where pd.ServiceTypeId.Equals(2)
                     select new
                     {
                         CostId = pd.CostId,
                         serviceName = od.serviceName,
                         ServiceTypeValue = ct.ServiceTypeValue,
                         ServiceCost = pd.ServiceCost
                     }).ToList();