如何编写嵌套分组数据 C# 的类型

Question

我对数据进行了分组，我想将这些数据发送到带有模型的视图。如何将属性写入视图模型

工作计划类

public class WorkPlan:IEntity
{
public int WorkPlanId { get; set; }
public int PlanNumber { get; set; }
public string Day { get; set; }
public string Lesson { get; set; }
public string Description { get; set; }
public bool IsActive { get; set; }
}

工作计划视图模型

public class WorkPlanViewModel:BaseViewModel
{
public List<WorkPlan> WorkPlans { get; set; }
public WorkPlan WorkPlan { get; set; }
}

行动

public IActionResult Index()
{
WorkPlanViewModel model=new WorkPlanViewModel();
model.Message=new Message();
var allWorkPlan = workPlanService.GetAll();
var groupPlan = allWorkPlan.GroupBy(p => p.PlanNumber)
.Select(p => new {PlanNumber=p.Key, Day= p.GroupBy(b => b.Day).ToList() } ).ToList();
return View(model);
}

组计划是我的分组数据

Answer 1

您可以创建一个反映该匿名类型的类，并将其作为属性添加到视图模型中。

控制器/操作代码 - 请注意下面的new GroupPlan代码Select

var vm = new MyViewModel();
vm.GroupPlans = allWorkPlan.GroupBy(p => p.PlanNumber)
.Select(p => new GroupPlan { PlanNumber = p.Key, Day = p.GroupBy(b => b.Day).ToList() }).ToList();

团体计划类

public class GroupPlan
{
public int PlanNumber { get; set; }
public List<IGrouping<string, WorkPlan>> Day { get; set; }
}

视图模型类

public class MyViewModel
{
public List<GroupPlan> GroupPlans { get; set; } 
}