Publicクラスの外に以下のように宣言
Imports Microsoft.VisualBasic.FileIO Public Class Form1
Dim tfp As New TextFieldParser(Fname) tfp.TextFieldType = FieldType.Delimited tfp.SetDelimiters(",")
Dim sreadData As String() i = 0 While tfp.EndOfData = False sreadData = tfp.ReadFields() ID(i) = sreadData(0) Data(i) = sreadData(1) i = i + 1 End While