Работа с CSV файлами с помощью библиотеки CsvHelper (Обновлено!)

Imports CsvHelper
Imports System.IO

...

Public Class MyDataClass
    Public Property FieldA As Integer
    Public Property FieldB As String
     ....
    Public Property FieldX As String
End Class

...

' *** Пишем в CSV файл  ***
Dim MyData1 = New MyDataClass With {.FieldA = 1, .FieldB = "2", .FieldX = "X"}
Using writer = New StreamWriter(Server.MapPath("~/AppData/Output.csv"))
    Dim csv = New CsvWriter(writer)
    csv.Configuration.Encoding = Encoding.UTF8
    csv.WriteHeader(Of MyDataClass)()
    csv.WriteRecord(MyData) 
End Using


' *** Читаем из CSV файла ***
Using reader = New StreamReader(Server.MapPath("~/AppData/Output.csv"), True)
    Dim csv = New CsvReader(reader)
    csv.Configuration.IgnoreHeaderWhiteSpace = True  
    'csv.Configuration.Delimiter = ";"

    'CSVReader will now read the whole file into an enumerable
    Dim records As IEnumerable(Of MyDataClass) = csv.GetRecords(Of MyDataClass)().ToList()

    'First 5 records in CSV file will be printed 
    'For Each record As DataRecord In records.Take(5)

    For Each record In records.Take(3)
        Response.Write(record.FieldA, record.FieldB, record.FieldX)
    Next
End Using