/// <summary>
 /// Procedura selecteaza coeficienti
 /// </summary>
 /// <returns>Returneaza un DataSet care contine aceste date</returns>
 public DataSet GetCoeficienti()
 {
     Data.Coeficienti coeficienti = new Data.Coeficienti(settings.ConnectionString);
     return(coeficienti.GetCoeficienti());
 }