Question

我有一个对象“个人操作”，其中包含一个“四分之一”属性和一个枚举

public int QuarterId { get; set; }

        public QuarterList Quarter { get; set; }



        public enum QuarterList
        {
            [Display(Name = "Quarter One")]
            Q1 = 1,
            [Display(Name = "Quarter Two")]
            Q2 = 2,
            [Display(Name = "Quarter Three")]
            Q3 = 3,
            [Display(Name = "Quarter Four")]
            Q4 = 4,
        }

我在控制器中为此对象创建了一条路由，该路由传递了一个对象（PerformanceManagementRecord）和一个int参数（四分之一）

 // GET: Objectives/Create
        public IActionResult Create(PerformanceManagementRecord performanceManagementProcess, int quarter)
        {
            ViewBag.PerformanceManagementProcessId = performanceManagementProcess.Id;
            ViewBag.QuarterId = quarter;
            ViewBag.UserName = User.Identity.Name;
            PopulateStrategicActionDropDownList();
            return View();

        }

然后我的视图中有一个选择列表，它代表一个季度的枚举列表

  <div class="col-md-4">
            <form asp-action="Create">
                <div asp-validation-summary="ModelOnly" class="text-danger"></div>
                <div class="form-group">
                    <label asp-for="Quarter" class="control-label"></label>
                    <select asp-for="QuarterId" class="form-control"

                            asp-items="Html.GetEnumSelectList<IndividualAction.QuarterList>()" ></select>
                    <span asp-validation-for="Quarter" class="text-danger"></span>
                </div>

如何将选择列表绑定到四分之一值参数-该创建方法的URL包含我要设置的值（在本例中为3）

https://localhost:5001/IndividualActions/Create/12?quarter=3

但该值默认为第一季度

Answer 1

此link中概述的解决方案概述了ASP.NET中的选择列表，该解决方案是使用视图模型而不是Viewbag

   public IActionResult Create(PerformanceManagementRecord performanceManagementProcess, int quarter)
    {


        var vm = new IndividualAction();
        vm.Quarter = new IndividualAction.QuarterList();
        vm.QuarterId = quarter;

        vm.PerformanceManagementProcessId = performanceManagementProcess.Id;
        vm.QuarterId = quarter;
        PopulateStrategicActionDropDownList();
        return View(vm);

    }

将Asp.Net SelectList绑定到参数

1 个答案: