如何在会话中存储数组并使用javascript将其检索 [英] How to store an array in session and retrive it with javascript

问题描述

在我的c＃代码中，我在会话中存储了一个数组。下面是c＃代码

  protected   void  loadDuties（）
 {
 MyClass M =  new  MyClass（）; 
  string  [] duties =  null ; 
 duty = M.get_Duties（）; 
会话[ 职责] =职责; 
  //  退货税;  
} 

在我的母版页上，我想要检索这个数组。

 <   script  >  
 function load（）{
 var duties = new Array（）; 
 duties ='<％ =会话[ 职责]。ToString（）％> '; 
 alert（duties.toString（））; 
 for（i = 0; i <     duties.length;     i ++）  
   
                           {  
   
                           document.getElementById（duties [i]）。style.display     =  block ;   
   
                          }   
   
                                        }   
   
                                         window.onload     =   load; 
   
        < / script  >  

但警告打印System.String []

请帮助

解决方案

首先序列化然后使用....

 var dataArray = <％ =  new  System.Web.Script.Serialization.JavaScriptSerializer（）。Serialize（Session [ 职责]）％>  
 
 alert（dataArray [1]）; 
 <   / script  >  
 

首先从隐藏中获取会话对象输入是一种更加可行的方式。但为此，您必须将数组转换为JSON对象。您可以使用 Javascript Serializer [ ^ ]



要做到这一点，请在页面中放置一个隐藏的对象：

<输入runat =servertype =hiddenname =myhiddenid =myhidden/> 

之后设置会话值从代码隐藏中进入它，

 myhidden.Value =你的责任; 

然后很容易从javascript到达这个隐藏的输入。

 alert（document.form1 .myhidden.value）

Hi,
In my c# code, I store an array in session. Below is the c# code

protected void loadDuties()
       {
           MyClass M = new MyClass();
           string[] duties = null;
           duties = M.get_Duties();
           Session["duties"]= duties;
           //return duties;
       }

And on my master page, I want to retrieve this array.

<script>
    function load() {
         var duties = new Array();
        duties = '<%=Session["duties"].ToString()%>';
        alert(duties.toString());
        for (i = 0; i < duties.length; i++)

            {

            document.getElementById(duties[i]).style.display = "block";

            }

                   }

                   window.onload = load;

   </script>

But the alert prints System.String[]
Please help

解决方案

First Serialize then use ....

    var dataArray = <%=new System.Web.Script.Serialization.JavaScriptSerializer().Serialize(Session["duties"])%>

    alert(dataArray[1]);
</script>

Hi,

First of all reaching session objects from hidden inputs is a more prefable way. But for this purpose you have to convert your array into a JSON object. You can do it with Javascript Serializer[^]

To do it place a hidden object into your page:

<input runat="server" type="hidden" name="myhidden" id="myhidden" />

Afterwards set your session value into it as well from the codebehind,

myhidden.Value = "YOUR DUTIES";

Then it's easy to reach this hidden input from javascript.

alert(document.form1.myhidden.value)

这篇关于如何在会话中存储数组并使用javascript将其检索的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！