List change to the json format

Question

I want to change list to json format. How can I do?

        var db = new TelephoneBookDataContext();

        List<string> Capitals = (from U in db.Users
                                 where U.Name.ToLower().StartsWith(name.ToLower())
                                 select U.Name).ToList();
        return Capitals;

Java script part I cant get as such this code part

 $("document").ready(function () {
        $("#<%= txtSearch.ClientID %>").autocomplete({
            source: function (request, response) {
                $.ajax({
                    url: "Show.aspx/GetName",
                    data: "{'name':'" + $("#<%= txtSearch.ClientID %>").val() + "'}",
                    dataType: "json",
                    type: "POST",
                    success: function (data) {
                        response(data.d);
                    },
                    error: function (result) {
                        console.log(result);
                    }
                });
            },
            minLength: 2
        });
    });

do you mean you want to serialize this list to a json srting? — Boot750, Jul 21 '15 at 10:49
possible duplicate of [Serializing a list to JSON](http://stackoverflow.com/questions/9110724/serializing-a-list-to-json) — 3-14159265358979323846264, Jul 21 '15 at 10:49
i dont think its dublicate .. it is list of string type and the reference you passed is List of objet type .. we cant not Json serialize list of string by using class directly.as done in that code the reference you providing — Zohaib Waqar, Jul 21 '15 at 10:55
possible duplicate of [Convert a list of string into json format](http://stackoverflow.com/questions/17865584/convert-a-list-of-string-into-json-format) — Ramesh Rajendran, Jul 21 '15 at 11:22

score 0 · Accepted Answer · answered Jul 21 '15 at 10:49

0

First Add Name space

using System.Web.Script.Serialization;

Then use JavaScriptSerializer class

JavaScriptSerializer jss = new JavaScriptSerializer();

string output = jss.Serialize(ListOfMyObject);

your List is of String Type so you might need this try below if above donot work.

string[][] ArrayCapitals = Capitals.Select(x => new string[]{x}).ToArray();

string json = JsonConvert.SerializeObject(ArrayCapitals );

answered Jul 21 '15 at 10:49

Zohaib Waqar

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JsonConvert has a error "does not exist in the current context" – Murat Altay Jul 21 '15 at 11:01

List change to the json format

1 Answers1