Imports System.ComponentModelImports System.ThreadingImports System.Windows.FormsPublic Class Form1 Private worker As New BackgroundWorker() Private dataTable As New DataTable() Public Sub New() InitializeComponent() ' BackgroundWorkerの設…

Imports System.DataImports System.Windows.Forms Public Class Form1 Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load ' DataGridViewに表示するデータを含む配列を作成します Dim data As String(,) = { {"John", "Doe", …

Sub file_get() Dim folderPath As String = "C:\Users\sannp\Desktop\指定フォルダ" ' 指定フォルダのパスを設定 Dim csvFiles() As String = Directory.GetFiles(folderPath, "*.csv") Dim targetFileName As String = "Book1.csv" Dim targetData As New …