ATUL_v1.AtulBusinessLogic.GetActivityByID C# (CSharp) Method

        public string GetActivityByID(long ActivityID)
        {
            DataTable returnTable = new DataTable();
            Atul_v1Data adb = new Atul_v1Data();
            returnTable = adb.GetActivityByID(ActivityID);
            return JsonMethods.GetJSONString(returnTable);
        }

 public string GetActivityByID(string ActivityID)
 {
     string d = string.Empty;
     long AtulActivityID = Convert.ToInt64(ActivityID);
     AtulBusinessLogic adb = new AtulBusinessLogic();
     d = adb.GetActivityByID(AtulActivityID);
     return d;
 }