Public Class Form1
    Inherits System.Windows.Forms.Form

#Region " Windows Form Designer generated code "

    Public Sub New()
        MyBase.New()

        'This call is required by the Windows Form Designer.
        InitializeComponent()

        'Add any initialization after the InitializeComponent() call

    End Sub

    'Form overrides dispose to clean up the component list.
    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

    'Required by the Windows Form Designer
    Private components As System.ComponentModel.IContainer

    'NOTE: The following procedure is required by the Windows Form Designer
    'It can be modified using the Windows Form Designer.  
    'Do not modify it using the code editor.
    Friend WithEvents txtName As System.Windows.Forms.TextBox
    Friend WithEvents txtGrade As System.Windows.Forms.TextBox
    Friend WithEvents Button1 As System.Windows.Forms.Button
    Friend WithEvents Button2 As System.Windows.Forms.Button
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.txtName = New System.Windows.Forms.TextBox()
        Me.txtGrade = New System.Windows.Forms.TextBox()
        Me.Button1 = New System.Windows.Forms.Button()
        Me.Button2 = New System.Windows.Forms.Button()
        Me.SuspendLayout()
        '
        'txtName
        '
        Me.txtName.Location = New System.Drawing.Point(8, 40)
        Me.txtName.Name = "txtName"
        Me.txtName.TabIndex = 0
        Me.txtName.Text = ""
        '
        'txtGrade
        '
        Me.txtGrade.Location = New System.Drawing.Point(8, 80)
        Me.txtGrade.Name = "txtGrade"
        Me.txtGrade.TabIndex = 1
        Me.txtGrade.Text = ""
        '
        'Button1
        '
        Me.Button1.Location = New System.Drawing.Point(24, 152)
        Me.Button1.Name = "Button1"
        Me.Button1.TabIndex = 2
        Me.Button1.Text = "Button1"
        '
        'Button2
        '
        Me.Button2.Location = New System.Drawing.Point(128, 160)
        Me.Button2.Name = "Button2"
        Me.Button2.TabIndex = 3
        Me.Button2.Text = "Button2"
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(292, 273)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.Button2, Me.Button1, Me.txtGrade, Me.txtName})
        Me.Name = "Form1"
        Me.Text = "Form1"
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

        If txtName.Text = "" Then
            MsgBox("Name must be entered")
            txtName.Focus()
            Exit Sub
        ElseIf txtGrade.Text = "" Then
            MsgBox("Grade must be entered")
            txtGrade.Focus()
            Exit Sub
        End If

        FileOpen(1, "C:\VBFILES\PRACTICE\EX11-1.TXT", _
            OpenMode.Append)
        WriteLine(1, UCase(txtName.Text), Val(txtGrade.Text))
        txtName.Text = ""
        txtGrade.Text = ""
        FileClose(1)

    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        Dim strName As String
        Dim intGrade As Integer

        FileOpen(1, "C:\VBFILES\PRACTICE\EX11-1.TXT", _
            OpenMode.Input)
        Do While Not EOF(1)
            Input(1, strName)
            Input(1, intGrade)
            Console.WriteLine(strName & ":" & intGrade)
        Loop

        FileClose(1)
    End Sub
End Class
