[VB.Net] Changing text style with chkboxes.

My form exists out of 3 checkboxes and a textbox.

Checkbox 1 is used to make the text in the txtbox bold.
Checkbox 2 is used to make it underlined
and the third is used to make it italic.

But I don't know how to change it.
It also needs to be possible to combine them, for example bold and underlined, italic and underlined, bold and italic, or all three together etc.

Note that this is for Visual Basic.net, not the express edition, not version 6.

Hope this help's.

Code:

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Imports System.Windows.Forms
Imports System.Drawing
Imports System.Drawing.Drawing2D

public class CheckBoxEvent
  public Shared Sub Main
        Application.Run(New FrmCheckBox)
  End Sub
End class


Public Class FrmCheckBox
  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
  Friend WithEvents chkItalic As System.Windows.Forms.CheckBox
  Friend WithEvents lblOutput As System.Windows.Forms.Label
  Friend WithEvents chkBold As System.Windows.Forms.CheckBox

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

  '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.
  <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
      Me.lblOutput = New System.Windows.Forms.Label()
      Me.chkItalic = New System.Windows.Forms.CheckBox()
      Me.chkBold = New System.Windows.Forms.CheckBox()
      Me.SuspendLayout()
      '
      'lblOutput
      '
      Me.lblOutput.Font = New System.Drawing.Font("Microsoft Sans Serif", 11.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
      Me.lblOutput.Location = New System.Drawing.Point(48, 24)
      Me.lblOutput.Name = "lblOutput"
      Me.lblOutput.Size = New System.Drawing.Size(208, 24)
      Me.lblOutput.TabIndex = 0
      Me.lblOutput.Text = "Watch the font style change"
      '
      'chkItalic
      '
      Me.chkItalic.Font = New System.Drawing.Font("Microsoft Sans Serif", 9.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
      Me.chkItalic.Location = New System.Drawing.Point(152, 64)
      Me.chkItalic.Name = "chkItalic"
      Me.chkItalic.Size = New System.Drawing.Size(64, 24)
      Me.chkItalic.TabIndex = 2
      Me.chkItalic.Text = "Italic"
      '
      'chkBold
      '
      Me.chkBold.Font = New System.Drawing.Font("Microsoft Sans Serif", 9.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
      Me.chkBold.Location = New System.Drawing.Point(80, 64)
      Me.chkBold.Name = "chkBold"
      Me.chkBold.Size = New System.Drawing.Size(56, 24)
      Me.chkBold.TabIndex = 1
      Me.chkBold.Text = "Bold"
      '
      'FrmCheckBox
      '
      Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
      Me.ClientSize = New System.Drawing.Size(292, 117)
      Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.chkItalic, Me.chkBold, Me.lblOutput})
      Me.Font = New System.Drawing.Font("Microsoft Sans Serif", 9!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
      Me.Name = "FrmCheckBox"
      Me.Text = "CheckBoxTest"
      Me.ResumeLayout(False)

  End Sub

#End Region

  Private Sub chkItalic_CheckedChanged _
      (ByVal sender As System.Object, ByVal e As System.EventArgs) _
      Handles chkItalic.CheckedChanged

      lblOutput.Font = New Font("Microsoft Sans Serif", _
        lblOutput.Font.Size, lblOutput.Font.Style Xor FontStyle.Italic)
  End Sub

  Private Sub chkBold_CheckedChanged _
      (ByVal sender As System.Object, ByVal e As System.EventArgs) _
      Handles chkBold.CheckedChanged

      lblOutput.Font = New Font("Microsoft Sans Serif", _
        lblOutput.Font.Size, lblOutput.Font.Style Xor FontStyle.Bold)
  End Sub

End Class

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