MVC Razor Html Helpers - 如何獲取和設置jQuery參數？

Question

我不知道如何從DropDownList獲取CampaignPointsId，並使用$ .getJSON（...）函數的返回值設置Label。

剃刀+ jQuery的：

@Html.DropDownList("CampaignPointsId", null, new { onchange = "SaveCampaignPoints();" }) 
 
    @Html.Label("CampaignPoints", "CampaignPoints: "); 
 
    
 
<script type="text/javascript"> 
 
     function SaveCampaignPoints() 
 
     { 
 
      var url = "/AbilitySets/SaveCampaignPoints"; 
 
      
 
      //selectedId = CampaignPointsId; 
 
    
 
      $.getJSON(url, { campaignPoints: selectedId }, function(data) { $("#points").html(data.points); }); 
 

 
      // if(points!=null){ 
 
      // CampaignPoints = points;} 
 
     } 
 
</script> 
 
​

Answer 1

在模型

，

public class MyModel 
    { 
//some properties... 
[NotMapped] 
     public SelectList Items{ get; set; } 
} 

在控制器，填補項目列表模式

以V

IEW，

@Html.DropDownList("Items", Model.Items, "--Select--", new { @id="drpItems"}) 




$(document).ready(function() { 

$("#drpItems").change(function() { 
     var selectedID = $("#drpItems").val(); 
//code 
} 
}); 

Answer 2

@ Html.DropDownList（ 「CampaignPointsId」，（的SelectList）ViewBag.CampaignPoints，新的{平變化=「SaveCampaignPoints（）; 「}） @ Html.Label（」 CampaignPoints 「」 CampaignPoints：「）

function SaveCampaignPoints() { 
     var CampaignPointsId = $('#CampaignPointsId').val(); 

     $.ajax({ 
      url: "/AbilitySets/SaveCampaignPoints", 
      data: { campaignPoints: CampaignPointsId }, 
      success: function (points) { 
       alert(points); 
       }, 
      error: function (points) { alert("error"); alert(points); }, 
      type: 'POST' 
     }); 
    }