は、私は2つの以下のウェブサイトの助けを借りて、この問題を解決するために管理:
これらを使用して
Loop Through Files in Directory
Delimit Data
私は、次のボタンクリックサブを作成し、付属の関数:
Private Sub Button_Run_Click(sender As Object, e As EventArgs) Handles Button_Run.Click
' Make a reference to a directory
Dim strDir As String = ("C:\")
Dim Dir As New System.IO.DirectoryInfo(strDir)
' Get a reference to each file in that directory
Dim fiArr As System.IO.FileInfo() = Dir.GetFiles()
Dim fri As System.IO.FileInfo
'For each file call the formatter to write to a text file
'Then delete each file after writing it
For Each fri In fiArr
Call Formatter(strDir & fri.Name)
My.Computer.FileSystem.DeleteFile(strDir & fri.Name)
Next fri
End Sub
次に、各行をデリミタで区切ります(values(0)
変数を使用して)ieldを取得し、そのインデックスを使用して変更することができます。行を制御することは、i
整数を変更することによって、新しい変数を使用して、または既存の変数を変更することと同じくらい簡単です。例えば:
Public Sub Formatter(ByVal FName As String)
'Standard start defining stream reader to loop
'through and pull data from text files
'FName is provided from the form button sub
Dim StrReader As New System.IO.StreamReader(FName)
Dim text As String = StrReader.ReadToEnd
StrReader.Close()
Dim lines() As String = text.Split(vbLf)
'Define all variables that may need to be stored before writing
Dim x1, x2, x3, x4, x5, x6, x7, x8, x9, x0 As String
'Define where the data will be written to (line by line)
Dim FPath As String = "C:\Sample.txt"
If Not System.IO.File.Exists(FPath) Then
System.IO.File.Create(FPath).Dispose()
End If
Dim objwriter As System.IO.StreamWriter
'Set loop to go through all data from beginning to end using i as line index
Dim i As Double
For i = 0 To lines.Length - 1
'Split each line by pipes (|) allowing "values" to be indexed to pull by column
Dim values() As String = lines(i).Split("|")
'Set 1st column in row as switch item
Select Case values(0)
'If 1st column in row is 001, store required data in variables
'specified using the index of the value to give accurate column
Case "001"
x1 = values(1)
x2 = values(2)
x3 = values(3)
x3 = values(4)
'Repeat same as 001 but for 002
Case "002"
x4 = values(1)
x5 = values(2)
'Repeat same as 001 but for 003
Case "003"
x6 = values(1)
x7 = values(2)
'Write to file including fields 1 & 3 from 004 group
Case "004"
objwriter = System.IO.File.AppendText(FPath)
objwriter.WriteLine(x1 & "," & x2 & "," & x3 & "," & x4 _
& "," & x5 & "," & x6 & "," & x7 & "," _
& Nvalues(1) & "," & Nvalues(2))
objwriter.Close()
Case Else
End Select
Application.DoEvents()
Next
End Sub
:
Dim Nvalues() As String = lines(i + 1).Split("|")
がこれを使用して、私は次の関数を作成しました