MVC4 Dropdownlist

Question

当用户从dropdownlist中选择一些值时，我需要将三个下拉列表中的值传递给控制器​​。我尝试这样做，但只传递所选下拉列表中的值，其他值为空值，任何帮助都会不胜感激。

VIEW

 @@using (Html.BeginForm("GetFilterValues","Home",FormMethod.gET)) 
      { 
      @Html.DropDownList("FClass", ViewBag.Market as SelectList, new { id = "Market" , onchange = "$(this).parents('form').submit();" }) 
      } 

     @using (Html.BeginForm("GetFilterValues","Home",FormMethod.Get)) 
        { 
          @Html.DropDownList("FClass", ViewBag.Class as SelectList, new { id = "FClass" , onchange = "$(this).parents('form').submit();" }) 
         } 

       </td> 
         <td> 
       @Html.Label("Status") 
          </td> 
       <td> 
        @using (Html.BeginForm("GetFilterValues","Home",FormMethod.Get)) 
        { 
               @Html.DropDownList("Status", ViewBag.Status as SelectList, new { id = "Status" , onchange = "$(this).parents('form').submit();" }) 

        } 

控制器 [HTTPGET]

 public void GetFilterValues() 
     { 
     string market = this.Request.Form.Get("Market"); 
     string fclass = this.Request.Form.Get("FClass"); 
     string status = this.Request.Form.Get("Status"); 
     } 

Answer 1

尝试单成槽柱，并且使用这样的的FormCollection的名字拉值...

查看：

@using (Html.BeginForm("GetFilterValues","Home", FormMethod.Post)) 
    {  
      @Html.DropDownList("nameMarket", ViewBag.Market as SelectList, new { id = "Market" , onchange = "$(this).parents('form').submit();" }) 
      @Html.DropDownList("nameClass", ViewBag.Class as SelectList, new { id = "FClass" , onchange = "$(this).parents('form').submit();" }) 
      @Html.DropDownList("nameStatus", ViewBag.Status as SelectList, new { id = "Status" , onchange = "$(this).parents('form').submit();" }) 
    } 

控制器：

[HttpPost] 
public void GetFilterValues(FormCollection collection) { 
    string market = Convert.ToString(collection["nameMarket"]); 
    string fclass = Convert.ToString(collection["nameClass"]); 
    string status = Convert.ToString(collection["nameStatus"]); 
}