Question

您好：我有一个正在使用asp.net mvc的Web应用程序，唯一的问题是我正在创建一个来自数据库的下拉列表。当我运行它时，下拉菜单中没有任何显示。有人告诉我这个问题是一个绑定选择标签，而不是绑定到选择列表，尽管我似乎无法弄清楚。这是我到目前为止所看到的，这是我在手表1上遇到的错误：错误CS0103：名称“模型”在当前上下文中不存在

Index.cshtml：

    @model RiskApplication.Models.RiskApplicationModel

@{
    ViewBag.Title = "Index";
}

<h2>RiskPrescreen Application 2018</h2>

<p>
    @Html.ActionLink("Create New", "Create")
</p>

<p>
    @Html.ActionLink("Help", "ViewPage1")
</p>

<form asp-controller="DataForms" asp-action="Index" method="get" runat="server">
    <p>
        <select asp-for="Department" asp-items="@Model.owners">
            <option value="">-----------</option>
        </select>



        Application Name: <input type="text" name="SearchString">
        <input type="submit" value="Search" />
    </p>
</form>

DataFormsController.cs：

 public async Task<ActionResult> Index(string department, string searchString)
        {
            // Use LINQ to get list of genres.
            IQueryable<string> genreQuery = from m in db.AppOwner_DD
                                            orderby m.AppOwnerDes
                                            select m.AppOwnerDes;

            var dataForms = from m in db.DataForms
                            select m;

            if (!String.IsNullOrEmpty(searchString))
            {
                dataForms = dataForms.Where(s => s.Name.Contains(searchString));
            }

            if (!String.IsNullOrEmpty(department))
            {
                dataForms = dataForms.Where(x => x.AppOwner_DD.AppOwnerDes == department);
            }

            var movieGenreVM = new RiskApplicationModel();

            var list = await genreQuery.Distinct().ToListAsync();
            movieGenreVM.owners = new SelectList( list );

            movieGenreVM.dataForms = await dataForms.ToListAsync();

            return View(movieGenreVM);
        }

RiskApplicationModel.cs：

    using System.Collections.Generic;
//using Microsoft.AspNetCore.Mvc.Rendering;
using System.Web.Mvc;

namespace RiskApplication.Models
{
    public class RiskApplicationModel
    {
        public List<DataForm> dataForms;
        public SelectList owners;
        public string department { get; set; }
    }
}

如果有人可以提供帮助，将不胜感激！谢谢

ASP.NET MVC-绑定选择标记未绑定到选择列表

0 个答案: