将具有不同 SelectedValues 的相同 SelectList 传递给 View？

Question

我有一个带有两个下拉列表的视图，周末第 1 天和周末第 2 天。我处于编辑模式，并且通过操作我正在传递我的 select 列表，如下所示：

var WeekList1 = new SelectList(new List<SelectListItem>
{
     new SelectListItem { Value = "", Text = "Select Day" },
     new SelectListItem { Value = "1", Text = "Sunday" },
     new SelectListItem { Value = "2", Text = "Monday" },
     new SelectListItem { Value = "3", Text = "Tuesday" },
     new SelectListItem { Value = "4", Text = "Wednesday" },
     new SelectListItem { Value = "5", Text = "Thursday" },
     new SelectListItem { Value = "6", Text = "Friday" },
     new SelectListItem { Value = "7", Text = "Saturday" }
 }, "Value", "Text", model.weekendDay1);


var WeekList2 = new SelectList(new List<SelectListItem>
{
     new SelectListItem { Value = "", Text = "Select Day" },
     new SelectListItem { Value = "1", Text = "Sunday" },
     new SelectListItem { Value = "2", Text = "Monday" },
     new SelectListItem { Value = "3", Text = "Tuesday" },
     new SelectListItem { Value = "4", Text = "Wednesday" },
     new SelectListItem { Value = "5", Text = "Thursday" },
     new SelectListItem { Value = "6", Text = "Friday" },
     new SelectListItem { Value = "7", Text = "Saturday" }
 }, "Value", "Text", model.weekendDay2);

ViewBag.WeekEnd1 = WeekList1;
ViewBag.WeekEnd2 = WeekList2;

我创建同一个列表两次只是为了传递不同的 selected 值。有什么方法可以只创建一次并使用不同的 selected 值传递它。我不想为此创建新数据库 table。

更新：

@Html.DropDownList("WeekEnd1", null,  htmlAttributes: new { @class = "form-control" })

Answer 1

型号：

public class CustomModel
{
     public string Week1 { get; set; }
     public string Week2 { get; set; }
     public SelectList Items { get; set; }
}

控制器：

public ActionResult Index()
{
     CustomModel model = new CustomModel();         
     model.Items = new SelectList(new List<SelectListItem>
                            {
                                 new SelectListItem { Value = "", Text = "Select Day" },
                                 new SelectListItem { Value = "1", Text = "Sunday" },
                                 new SelectListItem { Value = "2", Text = "Monday" },
                                 new SelectListItem { Value = "3", Text = "Tuesday" },
                                 new SelectListItem { Value = "4", Text = "Wednesday" },
                                 new SelectListItem { Value = "5", Text = "Thursday" },
                                 new SelectListItem { Value = "6", Text = "Friday" },
                                 new SelectListItem { Value = "7", Text = "Saturday" }
                             }, "Value", "Text");
     return View(model);
}

查看：

@using (Html.BeginForm())
{
     @Html.DropDownListFor(model => model.Week1, Model.Items)
     @Html.DropDownListFor(model => model.Week2, Model.Items)
     <input type="submit" value="SUBMIT" />
}

对于 post 方法中的这种方法，您可以根据模型属性获取值。

将具有不同 SelectedValues 的相同 SelectList 传递给 View？

Passing same SelectList with different SelectedValues to View?

selectlist

viewbag

asp.net-mvc-4