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 Button1 As System.Windows.Forms.Button
    Friend WithEvents Label2 As System.Windows.Forms.Label
    Friend WithEvents Label1 As System.Windows.Forms.Label
    Friend WithEvents lblPositionNumber As System.Windows.Forms.Label
    Friend WithEvents lblFibonacciNumber As System.Windows.Forms.Label
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.Button1 = New System.Windows.Forms.Button
        Me.lblPositionNumber = New System.Windows.Forms.Label
        Me.Label2 = New System.Windows.Forms.Label
        Me.Label1 = New System.Windows.Forms.Label
        Me.lblFibonacciNumber = New System.Windows.Forms.Label
        Me.SuspendLayout()
        '
        'Button1
        '
        Me.Button1.Font = New System.Drawing.Font("Microsoft Sans Serif", 14.25!, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.Button1.Location = New System.Drawing.Point(80, 8)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(304, 32)
        Me.Button1.TabIndex = 0
        Me.Button1.Text = "Get Next Number"
        '
        'lblPositionNumber
        '
        Me.lblPositionNumber.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle
        Me.lblPositionNumber.Font = New System.Drawing.Font("Microsoft Sans Serif", 14.25!, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.lblPositionNumber.Location = New System.Drawing.Point(240, 56)
        Me.lblPositionNumber.Name = "lblPositionNumber"
        Me.lblPositionNumber.Size = New System.Drawing.Size(224, 23)
        Me.lblPositionNumber.TabIndex = 1
        Me.lblPositionNumber.Text = "1"
        Me.lblPositionNumber.TextAlign = System.Drawing.ContentAlignment.MiddleCenter
        '
        'Label2
        '
        Me.Label2.Font = New System.Drawing.Font("Microsoft Sans Serif", 15.75!, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.Label2.Location = New System.Drawing.Point(8, 56)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(232, 23)
        Me.Label2.TabIndex = 2
        Me.Label2.Text = "Position in Sequence:"
        '
        'Label1
        '
        Me.Label1.Font = New System.Drawing.Font("Microsoft Sans Serif", 15.75!, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.Label1.Location = New System.Drawing.Point(8, 104)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(200, 23)
        Me.Label1.TabIndex = 4
        Me.Label1.Text = "Fibonacci Number:"
        '
        'lblFibonacciNumber
        '
        Me.lblFibonacciNumber.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle
        Me.lblFibonacciNumber.Font = New System.Drawing.Font("Microsoft Sans Serif", 14.25!, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.lblFibonacciNumber.Location = New System.Drawing.Point(240, 104)
        Me.lblFibonacciNumber.Name = "lblFibonacciNumber"
        Me.lblFibonacciNumber.Size = New System.Drawing.Size(224, 23)
        Me.lblFibonacciNumber.TabIndex = 3
        Me.lblFibonacciNumber.Text = "0"
        Me.lblFibonacciNumber.TextAlign = System.Drawing.ContentAlignment.MiddleCenter
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(488, 150)
        Me.Controls.Add(Me.Label1)
        Me.Controls.Add(Me.lblFibonacciNumber)
        Me.Controls.Add(Me.Label2)
        Me.Controls.Add(Me.lblPositionNumber)
        Me.Controls.Add(Me.Button1)
        Me.Name = "Form1"
        Me.Text = "Fibonacci Number Generator"
        Me.ResumeLayout(False)

    End Sub

#End Region

    Dim num1 As Integer = 1
    Dim num2 As Integer = 0

    Dim counter As Integer = 1
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim nextNumber As Integer

        Try
            nextNumber = num1 + num2
            num1 = num2
            num2 = nextNumber

            lblFibonacciNumber.Text = nextNumber

            counter = counter + 1
            lblPositionNumber.Text = counter
        Catch
            MsgBox("Sorry, number is too big.")
        End Try
    End Sub
End Class