Add / Remove TextChanged event for RichTextBox : RichTextBox « Windows Presentation Foundation « C# / C Sharp

Home
C# / C Sharp
1.2D Graphics
2.Class Interface
3.Collections Data Structure
4.Components
5.Data Types
6.Database ADO.net
7.Date Time
8.Design Patterns
9.Development Class
10.Event
11.File Stream
12.Generics
13.GUI Windows Form
14.Internationalization I18N
15.Language Basics
16.LINQ
17.Network
18.Office
19.Reflection
20.Regular Expressions
21.Security
22.Services Event
23.Thread
24.Web Services
25.Windows
26.Windows Presentation Foundation
27.XML
28.XML LINQ
C# / C Sharp » Windows Presentation Foundation » RichTextBoxScreenshots 
Add / Remove TextChanged event for RichTextBox
Add / Remove TextChanged event for RichTextBox
  

<Window x:Class="WpfApplication1.Window1"
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  Title="Window1" Height="600" Width="800">
  <Grid>
    <RichTextBox x:Name="rtbTextContent" TextChanged="RichTextBox_TextChanged" />
  </Grid>
</Window>
//File:Window.xaml.cs
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Media;

namespace WpfApplication1
{

    public partial class Window1 : Window
    {
        public Window1()
        {
            InitializeComponent();
        }
        
        private void RichTextBox_TextChanged(object sender, TextChangedEventArgs e)
        {

            TextRange textRange = new TextRange(rtbTextContent.Document.ContentStart, rtbTextContent.Document.ContentEnd);
            rtbTextContent.TextChanged -= RichTextBox_TextChanged;
            textRange.ClearAllProperties();
            ApplyFormatting();
            rtbTextContent.TextChanged += RichTextBox_TextChanged;
        }

        private void ApplyFormatting()
        {
            TextPointer tp = rtbTextContent.Document.ContentStart;
            tp = FindNextString(tp);

            TextPointer textRangeEnd = tp.GetPositionAtOffset(1, LogicalDirection.Forward);

            TextRange tokenTextRange = new TextRange(tp, tp.GetPositionAtOffset(1, LogicalDirection.Forward));

            tokenTextRange.ApplyPropertyValue(TextElement.ForegroundProperty, Brushes.Blue);
        }

        private TextPointer FindNextString(TextPointer tp)
        {
            char[] buffer = new char[1];
            tp.GetTextInRun(LogicalDirection.Forward, buffer, 01);
            return tp;
        }
    }
}

   
    
  
Related examples in the same category
1.Programmatically Insert Text into a RichTextBoxProgrammatically Insert Text into a RichTextBox
2.Get selected text from RichTextBox by using RichTextBox.Selection.TextGet selected text from RichTextBox by using RichTextBox.Selection.Text
3.Get Caret Position in a RichTextBox by using RichTextBox.CaretPosition.GetPositionAtOffsetGet Caret Position in a RichTextBox by using RichTextBox.CaretPosition.GetPositionAtOffset
4.Select all text from RichTextBox and cutSelect all text from RichTextBox and cut
5.Load or Save the Content of a RichTextBoxLoad or Save the Content of a RichTextBox
6.Get the content from the rich text box.Get the content from the rich text box.
7.Apply Syntax Highlighting in a Text ControlApply Syntax Highlighting in a Text Control
java2s.com  | Contact Us | Privacy Policy
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.