ATUL_v1.Atul_v1Data.GetActivityByID C# (CSharp) Method

        public DataTable GetActivityByID(long ActivityID)
        {
            SqlCommand cmd = new SqlCommand("exec dbo.Atul_ActivityGetByActivityID_sp @AtulActivityID", this._connection);
            cmd.Parameters.Add(new SqlParameter("@AtulActivityID", ActivityID));

            SqlDataAdapter da = new SqlDataAdapter();
            da.SelectCommand = cmd;
            DataTable returnTable = new DataTable(); returnTable.TableName = "Activity";
            da.Fill(returnTable);
            return returnTable;
        }

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