Hello Everyone,
     For god sake I have been working for this since last 3 days. I am using ASP.NET webforms for flot charts I connected to database in test.aspx.cs file using [Webmethod] where I can return json.
I stored the return value both in textarea  and $.plot(placeholder, [and also here], options) It does not print the graph in placeholder however when I
do:
var data = past the value of textarea here and run applicationn it prints to me the value can anyone help me please:

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[WebMethod]
        [ScriptMethod(ResponseFormat = ResponseFormat.Json)]
        public static List<string> GetLocation(string location)
        {
            List<string> result = new List<string>();
           
            StringBuilder strQuery = new StringBuilder();
            strQuery.Append("SELECT Location.Nome_Location, DATEPART(day, Statistiche.Data_Statistica) AS SDay, COUNT(Statistiche.ID_Tabella) AS Stats");
            strQuery.Append("  FROM Statistiche INNER JOIN Tabelle ON Statistiche.ID_Tabella = Tabelle.ID_Tabella INNER JOIN");
            strQuery.Append(" Location ON Statistiche.ID_Colonna_Statistica = Location.ID_Location");
            strQuery.Append(" WHERE (Statistiche.ID_Tabella = 2) AND (Statistiche.ID_Box = 60) AND (Location.Nome_Location = 'Albilò')");
            strQuery.Append("GROUP BY Location.Nome_Location, DATEPART(day, Statistiche.Data_Statistica)");
            string query = strQuery.ToString();

            SqlConnection con = new SqlConnection("");
            SqlCommand cmd = new SqlCommand(query, con);

            con.Open();
            int counter = 1;
            SqlDataReader dr = cmd.ExecuteReader();
            while (dr.Read())
            {
                if (counter == 1)
                {
                    result.Add("[{'label': 'Europe (EU27)','data':[[" + dr["SDay"].ToString() + "," + dr["Stats"].ToString() + "]");
                }
                else
                result.Add("[" + dr["SDay"].ToString() + "," + dr["Stats"].ToString() + "]");
                if (counter==31)
                {
                    result.Add("[" + dr["SDay"].ToString() + "," + dr["Stats"].ToString() + "]]}]");
                }
                counter++;
            }
            return result;
        }

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$.ajax({
            type: "POST",
            async: true,
            contentType: "application/json; charset=utf-8",
            dataType: "json",
            url: "test.aspx/GetLocation",
            data: "{'location':'Albilò'}",
            success: function drawChart(msg) {
                var options = { lines: { show: true }, points: { show: true }, xaxis: { tickDecimals: 0, tickSize: 1} };


                var ddata = [];


                var data = msg.d;


                for (var i = 0; i < 32; i++) {
                    ddata.push(data[i]);
                }


                var placeholder = $("#placeholder");
                $("#txtvalue").val(ddata);

                var datad = $("#txtvalue").text();

                $.plot(placeholder, ddata, options);

            },
            error: function () {
                alert("call is called111");
            }
        });


thanks