Option Explicit

Private Sub Form_Load()
    
    Dim intFNo  As Integer
    Dim strBuf  As String
    
    Text1.Top = 0
    Text1.Left = 0
    Text1.Text = ""
        
    intFNo = FreeFile
    Open "D:\TEST.TXT" For Input As intFNo
    Do While Not EOF(intFNo)
        Line Input #intFNo, strBuf
        Text1.Text = Text1.Text & Format$(strBuf,"00") & "行目" & vbCrLf
    Loop
    Close intFNo
    
End Sub

Private Sub Form_Resize()
    Text1.Height = Me.ScaleHeight
    Text1.Width = Me.ScaleWidth
End Sub             

Option Strict Off
Option Explicit On
Friend Class Form1
    Inherits System.Windows.Forms.Form
#Region "Windows Form デザイナによって生成されたコード"
    Public Sub New()
        MyBase.New()
        If m_vb6FormDefInstance Is Nothing Then
            If m_InitializingDefInstance Then
                m_vb6FormDefInstance = Me
            Else
                Try 
                    'スタートアップ フォームについては、最初に作成されたインスタンスが既定インスタンスになります。
                    If System.Reflection.Assembly.GetExecutingAssembly.EntryPoint.DeclaringType Is Me.GetType Then
                        m_vb6FormDefInstance = Me
                    End If
                Catch
                End Try
            End If
        End If
        'この呼び出しは、Windows Form デザイナで必要です。
        InitializeComponent()
    End Sub
    'Form は、コンポーネント一覧に後処理を実行するために dispose をオーバーライドします。
    Protected Overloads Overrides Sub Dispose(ByVal Disposing As Boolean)
        If Disposing Then
            If Not components Is Nothing Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(Disposing)
    End Sub
    'Windows Fom デザイナで必要です。
    Private components As System.ComponentModel.Container
    Public ToolTip1 As System.Windows.Forms.ToolTip
    Public WithEvents Text1 As System.Windows.Forms.TextBox
    'メモ : 以下のプロシージャは Windows Fom デザイナで必要です。
    'Windows Form デザイナを使って変更できます。
    'コードエディタを使って修正しないでください。

    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.components = New System.ComponentModel.Container()
        Me.ToolTip1 = New System.Windows.Forms.ToolTip(components)
        Me.ToolTip1.Active = True
        Me.Text1 = New System.Windows.Forms.TextBox
        Me.Text = "Form1"
        Me.ClientSize = New System.Drawing.Size(312, 206)
        Me.Location = New System.Drawing.Point(4, 30)
        Me.StartPosition = System.Windows.Forms.FormStartPosition.WindowsDefaultLocation
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.BackColor = System.Drawing.SystemColors.Control
        Me.FormBorderStyle = System.Windows.Forms.FormBorderStyle.Sizable
        Me.ControlBox = True
        Me.Enabled = True
        Me.KeyPreview = False
        Me.MaximizeBox = True
        Me.MinimizeBox = True
        Me.Cursor = System.Windows.Forms.Cursors.Default
        Me.RightToLeft = System.Windows.Forms.RightToLeft.No
        Me.ShowInTaskbar = True
        Me.HelpButton = False
        Me.WindowState = System.Windows.Forms.FormWindowState.Normal
        Me.Name = "Form1"
        Me.Text1.AutoSize = False
        Me.Text1.Size = New System.Drawing.Size(265, 185)
        Me.Text1.Location = New System.Drawing.Point(0, 0)
        Me.Text1.MultiLine = True
        Me.Text1.ScrollBars = System.Windows.Forms.ScrollBars.Vertical
        Me.Text1.TabIndex = 0
        Me.Text1.Text = "Text1"
        Me.Text1.AcceptsReturn = True
        Me.Text1.TextAlign = System.Windows.Forms.HorizontalAlignment.Left
        Me.Text1.BackColor = System.Drawing.SystemColors.Window
        Me.Text1.CausesValidation = True
        Me.Text1.Enabled = True
        Me.Text1.ForeColor = System.Drawing.SystemColors.WindowText
        Me.Text1.HideSelection = True
        Me.Text1.ReadOnly = False
        Me.Text1.Maxlength = 0
        Me.Text1.Cursor = System.Windows.Forms.Cursors.IBeam
        Me.Text1.RightToLeft = System.Windows.Forms.RightToLeft.No
        Me.Text1.TabStop = True
        Me.Text1.Visible = True
        Me.Text1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D
        Me.Text1.Name = "Text1"
        Me.Controls.Add(Text1)
    End Sub
#End Region 
#Region "アップグレード ウィザードのサポート コード"
    Private Shared m_vb6FormDefInstance As Form1
    Private Shared m_InitializingDefInstance As Boolean
    Public Shared Property DefInstance() As Form1
        Get
            If m_vb6FormDefInstance Is Nothing OrElse m_vb6FormDefInstance.IsDisposed Then
                m_InitializingDefInstance = True
                m_vb6FormDefInstance = New Form1()
                m_InitializingDefInstance = False
            End If
            DefInstance = m_vb6FormDefInstance
        End Get
        Set
            m_vb6FormDefInstance = Value
        End Set
    End Property
#End Region 
    
    Private Sub Form1_Load(ByVal eventSender As System.Object, ByVal eventArgs As System.EventArgs) Handles MyBase.Load
        
        Dim intFNo As Short
        Dim strBuf As String
        
        Text1.Top = 0
        Text1.Left = 0
        Text1.Text = ""
        
        intFNo = FreeFile
        FileOpen(intFNo, "D:\TEST.TXT", OpenMode.Input)
        Do While Not EOF(intFNo)
            strBuf = LineInput(intFNo)
            Text1.Text = Text1.Text & VB6.Format(strBuf, "00") & "行目" & ControlChars.CrLf
        Loop 
        FileClose(intFNo)
        
    End Sub
    
    Private Sub Form1_Resize(ByVal eventSender As System.Object, ByVal eventArgs As System.EventArgs) Handles MyBase.Resize
        Text1.Height = Me.ClientRectangle.Height
        Text1.Width = Me.ClientRectangle.Width
    End Sub
End Class