Change RichTextBox Selection Font : RichTextBox « GUI « VB.Net Tutorial

Change RichTextBox Selection Font
Option Strict On
Imports System.IO

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

public class RichTextBoxSelectionFont
   public Shared Sub Main
        Application.Run(New Form1)
   End Sub
End class

Public Class Form1
    Inherits System.Windows.Forms.Form

#Region " Windows Form Designer generated code "

    Public Sub New()

        'This call is required by the Windows Form Designer.

        '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
            End If
        End If
    End Sub
    Friend WithEvents Panel1 As System.Windows.Forms.Panel
    Friend WithEvents RichTextBox1 As System.Windows.Forms.RichTextBox
    Friend WithEvents ColorDialog1 As System.Windows.Forms.ColorDialog
    Friend WithEvents FontDialog1 As System.Windows.Forms.FontDialog
    Friend WithEvents SaveFileDialog1 As System.Windows.Forms.SaveFileDialog
    Friend WithEvents OpenFileDialog1 As System.Windows.Forms.OpenFileDialog
    Friend WithEvents btnChangeColor As System.Windows.Forms.Button
    Friend WithEvents btnChangeFont As System.Windows.Forms.Button
    Friend WithEvents btnSaveRTF As System.Windows.Forms.Button
    Friend WithEvents btnOpenRTF As System.Windows.Forms.Button
    Friend WithEvents btnWriteControls As System.Windows.Forms.Button
    Friend WithEvents btnReadControls As System.Windows.Forms.Button
    Friend WithEvents TextBox1 As System.Windows.Forms.TextBox
    Friend WithEvents TextBox2 As System.Windows.Forms.TextBox
    Friend WithEvents TextBox3 As System.Windows.Forms.TextBox

    '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.
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.Panel1 = New System.Windows.Forms.Panel()
        Me.RichTextBox1 = New System.Windows.Forms.RichTextBox()
        Me.ColorDialog1 = New System.Windows.Forms.ColorDialog()
        Me.FontDialog1 = New System.Windows.Forms.FontDialog()
        Me.SaveFileDialog1 = New System.Windows.Forms.SaveFileDialog()
        Me.OpenFileDialog1 = New System.Windows.Forms.OpenFileDialog()
        Me.btnChangeColor = New System.Windows.Forms.Button()
        Me.btnChangeFont = New System.Windows.Forms.Button()
        Me.btnSaveRTF = New System.Windows.Forms.Button()
        Me.btnOpenRTF = New System.Windows.Forms.Button()
        Me.btnWriteControls = New System.Windows.Forms.Button()
        Me.btnReadControls = New System.Windows.Forms.Button()
        Me.TextBox1 = New System.Windows.Forms.TextBox()
        Me.TextBox2 = New System.Windows.Forms.TextBox()
        Me.TextBox3 = New System.Windows.Forms.TextBox()
        Me.Panel1.Controls.AddRange(New System.Windows.Forms.Control() {Me.btnReadControls, Me.btnWriteControls, Me.btnOpenRTF, Me.btnSaveRTF, Me.btnChangeFont, Me.btnChangeColor})
        Me.Panel1.Dock = System.Windows.Forms.DockStyle.Bottom
        Me.Panel1.Location = New System.Drawing.Point(0, 222)
        Me.Panel1.Name = "Panel1"
        Me.Panel1.Size = New System.Drawing.Size(656, 64)
        Me.Panel1.TabIndex = 0
        Me.RichTextBox1.Location = New System.Drawing.Point(16, 8)
        Me.RichTextBox1.Name = "RichTextBox1"
        Me.RichTextBox1.Size = New System.Drawing.Size(336, 176)
        Me.RichTextBox1.TabIndex = 1
        Me.RichTextBox1.Text = "Mr. and Mrs. Dursley, of number four, Privet Drive, were proud to say that they w" & _
        "ere perfectly normal, thank you very much."
        Me.btnChangeColor.Location = New System.Drawing.Point(24, 24)
        Me.btnChangeColor.Name = "btnChangeColor"
        Me.btnChangeColor.Size = New System.Drawing.Size(88, 32)
        Me.btnChangeColor.TabIndex = 0
        Me.btnChangeColor.Text = "Change Color"
        Me.btnChangeFont.Location = New System.Drawing.Point(128, 24)
        Me.btnChangeFont.Name = "btnChangeFont"
        Me.btnChangeFont.Size = New System.Drawing.Size(88, 32)
        Me.btnChangeFont.TabIndex = 1
        Me.btnChangeFont.Text = "Change Font"
        Me.btnSaveRTF.Location = New System.Drawing.Point(232, 24)
        Me.btnSaveRTF.Name = "btnSaveRTF"
        Me.btnSaveRTF.Size = New System.Drawing.Size(88, 32)
        Me.btnSaveRTF.TabIndex = 2
        Me.btnSaveRTF.Text = "Save RTF"
        Me.btnOpenRTF.Location = New System.Drawing.Point(336, 24)
        Me.btnOpenRTF.Name = "btnOpenRTF"
        Me.btnOpenRTF.Size = New System.Drawing.Size(88, 32)
        Me.btnOpenRTF.TabIndex = 3
        Me.btnOpenRTF.Text = "Open RTF"
        Me.btnWriteControls.Location = New System.Drawing.Point(440, 24)
        Me.btnWriteControls.Name = "btnWriteControls"
        Me.btnWriteControls.Size = New System.Drawing.Size(88, 32)
        Me.btnWriteControls.TabIndex = 4
        Me.btnWriteControls.Text = "Write Controls"
        Me.btnReadControls.Location = New System.Drawing.Point(544, 24)
        Me.btnReadControls.Name = "btnReadControls"
        Me.btnReadControls.Size = New System.Drawing.Size(88, 32)
        Me.btnReadControls.TabIndex = 5
        Me.btnReadControls.Text = "Read Controls"
        Me.TextBox1.Location = New System.Drawing.Point(400, 24)
        Me.TextBox1.Name = "TextBox1"
        Me.TextBox1.Size = New System.Drawing.Size(232, 20)
        Me.TextBox1.TabIndex = 2
        Me.TextBox1.Text = "TextBox1"
        Me.TextBox2.Location = New System.Drawing.Point(400, 68)
        Me.TextBox2.Name = "TextBox2"
        Me.TextBox2.Size = New System.Drawing.Size(232, 20)
        Me.TextBox2.TabIndex = 3
        Me.TextBox2.Text = "TextBox2"
        Me.TextBox3.Location = New System.Drawing.Point(400, 112)
        Me.TextBox3.Name = "TextBox3"
        Me.TextBox3.Size = New System.Drawing.Size(232, 20)
        Me.TextBox3.TabIndex = 4
        Me.TextBox3.Text = "TextBox3"
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(656, 286)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.TextBox3, Me.TextBox2, Me.TextBox1, Me.RichTextBox1, Me.Panel1})

    End Sub

#End Region

    Private Sub btnChangeFont_Click(ByVal sender As System.Object, _
        ByVal e As System.EventArgs) Handles btnChangeFont.Click
        Dim theFont As System.Drawing.Font
        theFont = FontDialog1.Font

        btnChangeFont.Font = theFont
        RichTextBox1.SelectionFont = theFont
    End Sub
End Class

14.27.1.Load txt file to RichTextBoxLoad txt file to RichTextBox
14.27.2.Simple Editor based on RichTextBoxSimple Editor based on RichTextBox
14.27.3.Print view text in RichTextBoxPrint view text in RichTextBox
14.27.4.Save text in RichTextBox into a fileSave text in RichTextBox into a file
14.27.5.Change RichTextBox Selection colorChange RichTextBox Selection color
14.27.6.Change RichTextBox Selection FontChange RichTextBox Selection Font
14.27.7.Save Rtf file from RichTextBox and Read Rtf file to RichTextBoxSave Rtf file from RichTextBox and Read Rtf file to RichTextBox
14.27.8.Find text in RichTextBoxFind text in RichTextBox
14.27.9.Copy and paste between RichTextBoxCopy and paste between RichTextBox
14.27.10.RichTextBox Redo/UndoRichTextBox Redo/Undo