jquery ajax 传递数组到后台，用request取不到值

Question

前台js代码
 $("#Submit1").click(function () {
                $.ajax({
                         type:"POST",
                         url:"Ajax.ashx",
                         data: {                                 arr:[1,2,3,4,5] //测试以数组方式传递
                           },
                
                         success:function(data){
                                  alert(data);
                         }                })
            })
在后台的Ajax.ashx用request接收 public void ProcessRequest (HttpContext context) {
        context.Response.ContentType = "text/plain";
       
        string arr = context.Request["arr"];
        string[] myarr = arr.Split(',');
        context.Response.Write(myarr[0]);
        
      
         
    }可是运行后发现context.Request["arr"]接收不到值，不明白是哪里出问题了，大家帮帮忙

Answer 1

这位兄弟你的意思是写成这样？ data: {                                 "arr":[1,2,3,4,5] //测试以数组方式传递
                           },
没用，我试过了，还是取不到值

Answer 2

data: {  arr:"[1,2,3,4,5]" //测试以数组方式传递
  },这样呢