Build JSON with two datatable values

[Radha Shyam]

My question is how can I combine two sets of JSON for example one set comes from one datatable like this:

"ID": 1, "SHORT_NAME ": "B", "CARRIER_NA ME": "Carrier A"

Another one with multiple values comes from another datatable:

{ "YMDH": "2009-03-07 00:00:00.000", "SELL_DURATION" : 222.999995 }, { "YMDH": "2009-03-07 01:00:00.000", "SELL_DURATION" : 75.816664 }, { "YMDH": "2009-03-07 02:00:00.000", "SELL_DURATION" : 39.349995 }, { "YMDH": "2009-03-07 03:00:00.000", "SELL_DURATION" : 75.816664 }, { "YMDH": "2009-03-07 04:00:00.000", "SELL_DURATION" : 39.349995 }, { "YMDH": "2009-03-07 05:00:00.000", "SELL_DURATION" : 275.91666 }


Since first table will have only one records and another table will be having multiple records for that one row. how can i combine them both in my controller class to build proper JSON like this:

Desired Output:

var nwCustomers = [{ "ID": 1, "SHORT_NAME ": "A", "CARRIER_NA ME": "Carrier A", "SellDurati on": [{ "YMDH": "2009-03-07 00:00:00.000", "SELL_DURATION" : 222.999995 }, { "YMDH": "2009-03-07 01:00:00.000", "SELL_DURATION" : 75.816664 }, { "YMDH": "2009-03-07 02:00:00.000", "SELL_DURATION" : 39.349995 }, { "YMDH": "2009-03-07 03:00:00.000", "SELL_DURATION" : 75.816664 }, { "YMDH": "2009-03-07 04:00:00.000", "SELL_DURATION" : 39.349995 }, { "YMDH": "2009-03-07 05:00:00.000", "SELL_DURATION" : 275.91666 }] }
];

I'm tring to do something like this but not able to get the desired output:

public class GridModel
{
    public DateTime YMDH { get; set; }
    public double ID { get; set; }
    public string SHORT_NAME { get; set; }
    public string CARRIER_NAME { get; set; }
    public double SELL_DURATION { get; set; }      
    public GridSparklineModel SellDuration { get; set; }
}


public class GridSparklineModel
{
    public DateTime YMDH { get; set; }
    public double SELL_DURATION { get; set; }       
}

Controller:

 public ActionResult FetchGraphDataJSON()
        {
            Grid grid = new Grid();
            DataSet ds = grid.GetHistoryData();

            DataTable dt = ds.Tables[0];

            List<GridModel> data = new List<GridModel>();

            if (dt.Rows.Count != 0)
            {
                StringBuilder sb = new StringBuilder();                

                foreach (DataRow row in dt.Rows)
                {
                    sb.Append(new GridModel { ID = Convert.ToDouble(@row["ID"].ToString()), SHORT_NAME = @row["SHORT_NAME"].ToString() });

                    double carrierId = Convert.ToDouble(@row["ID"].ToString());

                    DataRow[] rowsInOtherTable = ds.Tables[1].Select("ID = " + carrierId);

                    for(int i=0; i < rowsInOtherTable.Count(); i++)
                    {
                        // add with existing
                    }
                  
                    data.Add(new GridModel { ID = Convert.ToDouble(@row["ID"].ToString()), SHORT_NAME = @row["SHORT_NAME"].ToString(), CARRIER_NAME = @row["CARRIER_NAME"].ToString(), SellDuration = new GridSparklineModel { YMDH = DateTime.Parse(@rowsInOtherTable[0]["YMDH"].ToString()), SELL_DURATION = Convert.ToDouble(@rowsInOtherTable[0]["SELL_DURATION"].ToString()) } });
                }
            }

            return Json(data, JsonRequestBehavior.AllowGet);
        }

This is how m two datatables look:

First datatable has id values
ID SHORT_NAME CARRIER_NAME
1 A Carrier A
2 B Carrier B
3 C Carrier C
4 D Carrier D
5 E Carrier E
6 F Carrier F
7 G Carrier G


Based on above id values rows are filtered from this datatable 2 and added to make row of JSON

YMDH ID SELL_DURATION
2009-03-07 00:00:00.000 1 222.999995
2009-03-07 01:00:00.000 1 75.816664
2009-03-07 02:00:00.000 1 39.349995
2009-03-07 03:00:00.000 1 275.91666
2009-03-07 04:00:00.000 1 352.666641
2009-03-07 00:00:00.000 2 80.783324
2009-03-07 01:00:00.000 2 162.049985
2009-03-07 02:00:00.000 2 107.199989
2009-03-07 03:00:00.000 2 44.849994
2009-03-07 04:00:00.000 2 156.516658
2009-03-07 05:00:00.000 2 467.583312
2009-03-07 06:00:00.000 2 455.199977
and so on..