ATUL_v1.Atul_v1Data.GetProviderByID C# (CSharp) Метод

        public DataTable GetProviderByID(long providerID)
        {
            SqlCommand cmd = new SqlCommand("exec dbo.Atul_ServiceProviderGetByID_sp @AtulServiceProviderID", this._connection);
            cmd.Parameters.Add(new SqlParameter("@AtulServiceProviderID", providerID));
            SqlDataAdapter da = new SqlDataAdapter();
            da.SelectCommand = cmd;
            DataTable returnTable = new DataTable(); returnTable.TableName = "providers";
            da.Fill(returnTable);
            return returnTable;
        }

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