Find text in RichTextBox : RichTextBox « GUI « VB.Net Tutorial






Find text in RichTextBox
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms

public class RichTextBoxChangeFont
   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()
        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 RichTextBox1 As System.Windows.Forms.RichTextBox
    Friend WithEvents Button1 As System.Windows.Forms.Button
    Friend WithEvents Label1 As System.Windows.Forms.Label
    Friend WithEvents Button2 As System.Windows.Forms.Button
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.RichTextBox1 = New System.Windows.Forms.RichTextBox
        Me.Button1 = New System.Windows.Forms.Button
        Me.Label1 = New System.Windows.Forms.Label
        Me.Button2 = New System.Windows.Forms.Button
        Me.SuspendLayout()
        '
        'RichTextBox1
        '
        Me.RichTextBox1.Font = New System.Drawing.Font("Microsoft Sans Serif", 15.75!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.RichTextBox1.Location = New System.Drawing.Point(24, 72)
        Me.RichTextBox1.Name = "RichTextBox1"
        Me.RichTextBox1.Size = New System.Drawing.Size(240, 128)
        Me.RichTextBox1.TabIndex = 0
        '
        'Button1
        '
        Me.Button1.Location = New System.Drawing.Point(104, 216)
        Me.Button1.Name = "Button1"
        Me.Button1.TabIndex = 1
        Me.Button1.Text = "Format Text"
        '
        'Button2
        '
        Me.Button2.Location = New System.Drawing.Point(104, 256)
        Me.Button2.Name = "Button2"
        Me.Button2.TabIndex = 3
        Me.Button2.Text = "Save Text"
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(288, 285)
        Me.Controls.Add(Me.Button2)
        Me.Controls.Add(Me.Label1)
        Me.Controls.Add(Me.Button1)
        Me.Controls.Add(Me.RichTextBox1)
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private Sub Button1_Click(ByVal sender As System.Object, _
        ByVal e As System.EventArgs) Handles Button1.Click
        
        RichTextBox1.Text = "italic, bold, underlined, and strikeout" 

        RichTextBox1.Find("bold")
        Dim fntBold As New Font(RichTextBox1.Font, FontStyle.Bold)
        RichTextBox1.SelectionFont = fntBold

        RichTextBox1.Find("italic")
        Dim fntItalic As New Font(RichTextBox1.Font, FontStyle.Italic)
        RichTextBox1.SelectionFont = fntItalic

        RichTextBox1.Find("strikeout")
        Dim fntStrikeout As New Font(RichTextBox1.Font, FontStyle.Strikeout)
        RichTextBox1.SelectionFont = fntStrikeout

        RichTextBox1.Find("underlined")
        Dim fntUnderline As New Font(RichTextBox1.Font, FontStyle.Underline)
        RichTextBox1.SelectionFont = fntUnderline

    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        RichTextBox1.SaveFile("text.rtf")
    End Sub
End Class








14.27.RichTextBox
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