Pass Dictionary<String,List<String>> to Javascript array

Question

This is my web service

[WebMethod]
[ScriptMethod(ResponseFormat = ResponseFormat.Json)]
public Dictionary<string,List<string>> GetCategorias()
{
    var diccionario = new Dictionary<string, List<string>>();
    var categoria = "Recursos Humanos";
    diccionario.Add(categoria,new List<string>());
    diccionario[categoria].Add("Busqueda de recursos");
    diccionario[categoria].Add("Busqueda de recursos humanos");

    var categoria1 = "Informatica";
    diccionario.Add(categoria1, new List<string>());
    diccionario[categoria1].Add("IT");
    diccionario[categoria1].Add("Departamento de Insfractructura");

    //var serializer = new JavaScriptSerializer();
    //string json = serializer.Serialize((object)diccionario);

    return diccionario;
}

I received the dictionary in Javascript as:

 function get_Categorias_Comunidades() {
        $.ajax({
            type: "POST",
            url: "Lista_Categoria_comunidad.asmx/GetCategorias",
            data: "{}",
            contentType: "application/json; charset=utf-8",
            dataType: "json",
            success: llamada_Webservice,
            error: llamada_Error
        });
    }
    function llamada_Webservice(peticion) {
        debugger;

    }

How do I parse the keys and values to an array?

Use parseJSON(). It's already part of jQuery.

Diodeus - James MacFarlane
– Diodeus - James MacFarlane

2012-12-14 19:46:56 +00:00
Commented Dec 14, 2012 at 19:46 — Diodeus - James MacFarlane
– Diodeus - James MacFarlane, Commented Dec 14, 2012 at 19:46

Simon Edström · Accepted Answer · 2012-12-14 20:56:17Z

1

Something like this

function llamada_Webservice(peticion) {
var categories = peticion;
    for(item in categories{ // Data is saved in the variable named d if it's ASP.NET WebService
        var categoria = item; // The name
        var list = categories[item]; // The array that you could loop thru

    }

}

edited Dec 14, 2012 at 20:56

answered Dec 14, 2012 at 20:06

Simon Edström

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3 Comments

Lucas Valle Over a year ago

i give the wrong in the second line<i>var categories = peticion.d;</i> Microsoft JScript runtime error: 'd[...].key' is null or not an object

Simon Edström Over a year ago

Try to remove the .d If you select the network tab in Chrome and inspect the response you could se the JSON structure. Paste it in your quesiton

Simon Edström Over a year ago

Now you should look at the response in the network tab. Like this: i.sstatic.net/1QmML.jpg

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