Calculate age with date of birth from database

Select Name, DATEDIFF(MM,dob, GETDATE()) From Member

DataTable tab = new DataTable();
          var stateList = from row in tab1.AsEnumerable().AsQueryable()
                          select new { Name = row["Name"], Age = DateTime.Now.Subtract(DateTime.Parse(row["DOB"].ToString())).TotalDays / 30 };

static void PrintAge( DbConnection connection )
{
  string queryString = "SELECT DateOfBirth FROM Users";

  using (connection)
  {
    try
    {
      DbCommand command = connection.CreateCommand();
      command.CommandText = queryString;
      command.CommandType = CommandType.Text;
      connection.Open();

      DbDataReader reader = command.ExecuteReader();
      DateTime now = DateTime.Now;
      while ( reader.Read() )
      {
        object dateOfBirth = reader[0];
        if ( dateOfBirth == null || dateOfBirth.GetType() != typeof( DateTime ) )
        {
          continue;
        }
        Console.WriteLine("Age: {0}", DateDiff( (DateTime)dateOfBirth ).ElapsedYears );
      }
    }
    catch ( Exception ex )
    {
      Console.WriteLine( "Exception.Message: {0}", ex.Message );
    }
  }
}