如何为强类型模型填充 2 DropDownListFor

Question

我需要做的是-->在具有2个不同模型的视图上绑定2个DropDownListFor，我知道这是不可能实现的，因为只有一个模型可以在单一视图上调用。

初始要求

@Html.DropDownListFor(M => M.MobileList, new SelectList(Model.MobileList,"Value", "Text"))

@Html.DropDownListFor(M => M.CountryList, new SelectList(Model.CountryList,"Value", "Text"))

我做了什么

使用绑定其中一个下拉列表

@Html.DropDownListFor(M => M.MobileList, new SelectList(Model.MobileList,"Value", "Text"))

其他用过的ViewBag.

@Html.DropDownList("Countrylist", (IEnumerable<SelectListItem>)ViewBag.Countrylist, new { id = "CountryId", @class = "form-control", @multiple = "multiple" })

但我需要使用@Html.DropDownListFor razor 代码创建这两个下拉菜单。

Answer 1

示例：

public class Model1{
   public int MobileId {get;set;}
  public Model2 Model2{get;set;}
  public List<SelectListItem> MobileList {get;set;}
}

public class Model2{
   public int CountryId {get;set;}
  public List<SelectListItem> CountryList {get;set;}
}

正在查看

@model Model1

    @Html.DropDownListFor(M => M.MobileId,Model.MobileList, new { @class ="form-control" }))

    @Html.DropDownListFor(M => M.Model2.CountryId,Model.Model2.CountryList, new { @class ="form-control" }))

您也可以使用

@Html.DropDownListFor(M =>  M.Model2.CountryId, new SelectList((IEnumerable)ViewBag.Countrylist,"Value", "Text"), new { id = "CountryId", @class = "form-control", @multiple = "multiple" })

Answer 2

您可以如下创建父模型并在您的视图中使用它：

public class MainModel{
  public int CountryId {get;set;}
  public int MobileValue {get;set;}
  public List<MobileList> {get;set;}
  public List<CountryList> {get;set;}
}

然后在您看来：

@model MainModel

@Html.DropDownListFor(M => M.MobileValue, new SelectList(Model.MobileList,"Value", "Text"))

@Html.DropDownListFor(M => M.CountryId, new SelectList(Model.CountryList,"Value", "Text"))

Answer 3

    public class MainModel{
  public int CountryId {get;set;}
  public int MobileValue {get;set;}
  public Tuple<List<MobileList>,List<CountryList>>  {get;set;}
}

Please use the tuple for multiple list if you have only one model.

如何为强类型模型填充 2 DropDownListFor

How to populate 2 DropDownListFor for Strongly Typed model

asp.net-mvc

razor

dropdownlistfor