Parse Ej2 Spreadsheet Control in c# (JSON)

you need to deserialize the json first:

using Newtonsoft.Json;

To get only the values you need those classes and properties otherwise you can generate the classes and properties in this link Convert Json To C# Class

  public class Root1
    {
        public JsonObject jsonObject { get; set; }
    }
    public class JsonObject
    {
        public Workbook Workbook { get; set; }
    }
    public class Workbook
    {
        public List<Sheet> sheets { get; set; }
    }
    public class Sheet
    {
        public List<Row> rows { get; set; }
    }

    public class Row
    {
        public List<Cell> cells { get; set; }
    }

    public class Cell
    {
        public string value { get; set; }
    }

To make the deserialize

  private void btnConvert_Click(object sender, EventArgs e)
    {

        string fileName = "YOUR_PATH\\test.json";
        string jsonString = File.ReadAllText(fileName);
        Root1 l = JsonConvert.DeserializeObject<Root1>(jsonString);
        tbResult.Text = "l.jsonObject.Workbook.sheets[0].rows[0].cells[1].value - \n" + l.jsonObject.Workbook.sheets[0].rows[0].cells[1].value;
    }

and the result: