Question

我正在尝试在webgrid中显示下拉列表，但我无法让它工作：（

我收到以下错误:(在视图的最后一列）

最佳重载方法匹配 'System.Web.Helpers.WebGrid.Column（string，string， System.Func，string，bool）'有一些无效 arguments \ Visual Studio 2010 \项目\ FOO \条\视图\管理员\ ManageRoles.cshtml

希望你能理解代码。

模型：

public class UserViewModel
    {
        [Display(Name = "User name")]
        public string Name { get; set; }

        [Required]
        [DataType(DataType.Password)]
        [Display(Name = "Password")]
        public string Password { get; set; }

        public string Role { get; set; }

        public IEnumerable<SelectListItem> Roles1 { get; set; } 

        public string Email { get; set; }        
    }

控制器

    public ActionResult ManageRoles()
            {
                var users = Membership.GetAllUsers().Cast<MembershipUser>().Select(x => new UserViewModel
                {
                    Name = x.UserName,
                    Email = x.Email,
                    Roles1 = RolesList,
                    Role = Roles.GetRolesForUser(x.UserName).FirstOrDefault()
                });
                ViewBag.Roles = users;
                return View(users);
            }

public IEnumerable<SelectListItem> RolesList
            {
                get
                {
                    return Roles.GetAllRoles()
                        .Select(x => new SelectListItem
                        {
                            Value = x,
                            Text = x
                        })
                        .ToList();
                }
            }

查看：

@model IEnumerable<UserViewModel>

@{
    ViewBag.Title = "ManageRoles";
    var grid = new WebGrid(source: Model, defaultSort: "Name");
}

<h2>ManageRoles</h2>

    @grid.GetHtml(
        columns: grid.Columns(
            grid.Column("Name"),
            grid.Column("Email"),
            grid.Column("ListItemId", "Role", format: ((item) => Html.DropDownListFor(item.Role, item.Roles1)))
        )
    )

webgrid中MVC 3下拉列表的问题

0 个答案: