How To Pass a MultiDimensional Array from Javascript to server using PageMethods in ASP.Net

Question

I have some <li> Items in my HTML Page like this

<li id="A1" class="ui-state-default">Item 2</li>
  <li id="A2" class="ui-state-default">Item 3</li>
  <li id="A3" class="ui-state-default">Item 4</li>
  <li id="A4" class="ui-state-default">Item 5</li>

I called It using Javascript and Jquery like this to get the Id and Index of the <li> elements

function LiOrder() {
            var order = $('li').map(function (i) {
                return { id: this.id, index: i };
            }).get();

            PageMethods.GetServerResponse(order, OnSuccess, OnFail);
        }

        function OnSuccess(arg) {
            alert(arg);
        }

WebMethod Written in Aspx.cs Page is this

[WebMethod]
    public static string GetServerResponse(string[,] LiOrder)
    {


        return LiOrder[0,0];
    }

But when I try to execute it I get Error like this in Google Chrome (Javascript Console)

POST http://localhost:2453/ERP29.1.13/Production/LifeCycleRegistration.aspx/GetServerResponse 500 (Internal Server Error) ScriptResource.axd:6979

What might be the reason for this error. I could pass a string to WebMethod like this. But when it comes to Array, its like this. Please Help me to resolve this

whatever you send it will be string or object in javascript. you can json.stringfy, and send the string to method — Ravi Gadag
– Ravi Gadag, Commented Mar 8, 2013 at 10:11

2 revs · Accepted Answer · 2013-03-18 08:42:29Z

2

JSON.stringfy resolved my issue. I changed my code like this

var LiArr=JSON.stringify(order);
            PageMethods.GetServerResponse(LiArr, OnSuccess, OnFail);

edited Mar 18, 2013 at 8:42

community wiki

2 revs
Subin Jacob

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1 Comment

Flardryn Over a year ago

Hi. I've faced with the same problem. But your solution doesn't work for me. My jquery and c# method exactly the same with yours. But JSON.stringify makes my array a string. I need multidimensional array of data. Do you know why it is happening?

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