email ListaEmail = new email();
     …
     while …
     {
       email Email = new email();
       Email.email1 = adoDR["email"].ToString();
       Email.tipo = adoDR["tipo"].ToString();
       ListaEmail.Add(Email);
     }

email[] ListaEmail = new email[nRegistros];

ListaEmail [Cont].email1 = adoDR["email"].ToString();

public static email[] Func_RelatorEmail(Guid IdRelator)
{
  try
  {
   string sql = "SELECT Relator_Email.IdRelator, Relator_Email.EmailId, Email.email, Email.tipo, Email.tipoSpecified "
                      + "FROM Relator_Email INNER JOIN Email ON Relator_Email.EmailId = Email.EmailId "
                      + "WHERE(Relator_Email.IdRelator='" + IdRelator + "')";

    string connString = ClsParametros.Conexao;
    SqlConnection adoConn = new SqlConnection(connString);
    adoConn.Open();
    SqlCommand adoCmd = new SqlCommand(sql, adoConn);
    SqlDataReader adoDR = adoCmd.ExecuteReader();

    // contar o numero de registros
    int nRegistros = 0;
    while (adoDR.Read())
    { ++nRegistros; }

    // criar o objeto com o numero de registros
    email[] ListaEmail = new email[nRegistros];

    if (nRegistros > 0)
    {
      adoDR.Close();
      adoDR = adoCmd.ExecuteReader();

      int Cont = 0;
      while (adoDR.Read())
      {
         ListaEmail[Cont].email1 = adoDR["email"].ToString();
         ListaEmail[Cont].tipo = adoDR["tipo"].ToString();
         Cont++;
      }
   }
   adoDR.Close();
   adoDR.Dispose();
   adoCmd.Dispose();
   adoConn.Close();
   adoConn.Dispose();

    return ListaEmail;
  }
  catch (Exception ex)
  {
    throw new Exception(ex.Message);
  }
  finally
  {
  }
}