Question

87

Reading C# dictionary in Javascript

rated 0 times [ 88] [ 1] / answers: 1 / hits: 37320 / 13 Years ago, sat, october 15, 2011, 12:00:00

I have a dictionary variable in C# (ASP.NET). I want to send this data to Javascript. I am using this code to serialize it and send to javascript.

Dictionary<string, string> chat;

chat = new Dictionary<string, string>();



chat.Add(Sam, How are you?);

chat.Add(Rita, I am good);

var serialize = new System.Web.Script.Serialization.JavaScriptSerializer();



Response.Write(serialize.Serialize(chat));

On the Javascript page, I am calling this page using this;

 $.ajax({

 url: TextChatCalls/getChat.aspx,

 type: POST,

 context: document.body,

 success: function (response) {

          var Chats = response.split('n')[0];

          alert(Chats);



          }

 });

The value in Chats var is {Sam:How are you?,Rita:I am good}

I don't know how do I read this value in Chats. Can I anyhow convert this into a 2D array and read it as array[0][0], array[1][0] etc. ?

Thanks.

EDIT:
One more confusion is that, the response object, returned from ASP.NET, contains

{Sam:How are you?,Rita:I am good}



<!DOCTYPE html PUBLIC -//W3C//DTD XHTML 1.0 Transitional//EN http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd>



<html xmlns=http://www.w3.org/1999/xhtml>

<head><title>



</title></head>

<body>

    <form name=form1 method=post action=getChat.aspx?Id=141755 id=form1>

<div>

<input type=hidden name=__VIEWSTATE id=__VIEWSTATE value=/wEPDwULLTE2MTY2ODcyMjlkZJctiKZK4rXVndR3mbGssIarCrOF />

</div>



    <div>



    </div>

    </form>

</body>

</html>

And not just {Sam:How are you?,Rita:I am good} as expected. And hence I have to split the response object by var Chats = response.split('n')[0]; which makes it an string!

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answered 13 Years ago citlalia · Accepted Answer

You read like this:

alert(Chats[Sam]);

(so like a C# Dictionary :-). You read/write to it using something like Chats[propertyName])

or, to go through each value:

for (var c in Chats)

{

    if (Chats.hasOwnProperty(c)) 

    {

        alert(c + '   ' + Chats[c]);

    }

}

Note that this is different than C#. In C# c would contain a KeyValuePair<> containing both the key and the value. In Javascript c is only the key and to get the value you have to use Chats[c].

(the reasoning for hasOwnProperty is here http://yuiblog.com/blog/2006/09/26/for-in-intrigue/)

Now... If you really want to split it:

var array = [];



for (var c in Chats)

{

    if (Chats.hasOwnProperty(c)) 

    {

        array.push([c, Chats[c]]);

    }

}