如何将列表框中选定的项目从视图传递到控制器模型？

Question

我有一个带选项的列表框。用户可以选择全部或选择任何一个，所以我需要的是将所选内容绑定到控制器上的模型。即使我选择了一些，它也是空的。

我已经将数据填充到列表框中。 LoadAllControls方法位于索引控制器中。

将数据加载到列表框。这可以100％

public void LoadAllControls(myModel model)
    {
        try
        {
            string jsonReq = null;
            string jsonResp = null;

           //API call here
            jsonResp = JsonWrapper.JsonGET(jsonReq);
            List<Structs> listOrderTypes = DeserialiseFromJson<List<Structs>>.Deserialise(jsonResp);

            List<SelectListItem> listO = listOrderTypes.Select(item => new SelectListItem
            {
                Value = item.orderType.ToString(),
                Text = item.orderTypeName,
                Selected = "-1" == (item.orderTypeCode.ToString()) ? true : false
            }).ToList();
            model.orderTypes = new List<SelectListItem>(listO);

        }
        catch(Exception exx)
        {
            throw exx;
        }
    }

查看

@using (Ajax.BeginForm("Search", "myController", new AjaxOptions { HttpMethod = "Post" }))
{
   <div class="form-group">
    <label class="control-label col-sm-2" for="txtfrom">Order Type:</label>
    <div class="col-md-4">
        @Html.ListBoxFor(m => m.orderTypesIds, Model.orderTypes, new { @class = "form-control listbox", id = "orderTypeIdList", @multiple = "multiselect" })
    </div>
  </div>


  <div class="form-group">
    <div class="col-sm-10 col-sm-offset-2">
        <button class="btn btn-primary " id="btnSearch" name="SearchButton" type="submit">
            Search
        </button>
    </div>
  </div>

}

控制器

 public ActionResult Search(myModel  model) 
 {
    //Selected options comes as null  to the model

   //Some logic here
 }

我的模特

    public class myModel
    {
        public List<SelectListItem> orderTypes { get; set; }
        public int[] orderTypesIds { get; set; }
    }