RichTextBox operates on FlowDocument objects.
Note: Pasting HTML content into a RichTextBox might result in unexpected behavior because RichTextBox uses RTF format rather than directly using HTML format.
Examples
Example
Load and save content of WPF RichTextBox to a file
XAML:
<Window
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:src="clr-namespace:WpfApplication2"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d" x:Class="WpfApplication2.MainWindow"
Title="MainWindow"
d:DesignWidth="300" d:DesignHeight="320"
>
<Grid HorizontalAlignment="Left" Height="295" VerticalAlignment="Top" Width="300">
<Button x:Name="btnSave" Content="Save" HorizontalAlignment="Left" VerticalAlignment="Top" Width="75" Click="btnSave_Click"/>
<Button x:Name="btnLoad" Content="Load" HorizontalAlignment="Left" VerticalAlignment="Top" Width="75" Margin="80,0,0,0" Click="btnLoad_Click"/>
<RichTextBox x:Name="rtb" HorizontalAlignment="Left" Height="267" Margin="0,27,0,0" VerticalAlignment="Top" Width="300">
<FlowDocument>
<Paragraph>
<Run Text=""/>
</Paragraph>
</FlowDocument>
</RichTextBox>
</Grid>
</Window>
using System;
using System.Collections.Generic;using System.Globalization;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;
namespace WpfApplication2
{/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
///
public partial class MainWindow : Window
{public MainWindow()
{
InitializeComponent();
}
private void btnSave_Click(object sender, RoutedEventArgs e)
{
TextRange t = new TextRange(rtb.Document.ContentStart,rtb.Document.ContentEnd);
FileStream file = new FileStream("c:\\rtb.xaml", FileMode.Create);
t.Save(file, System.Windows.DataFormats.XamlPackage);
file.Close();
}
private void btnLoad_Click(object sender, RoutedEventArgs e)
{
TextRange t = new TextRange(rtb.Document.ContentStart, rtb.Document.ContentEnd);
FileStream file = new FileStream("c:\\rtb.xaml", FileMode.Open);
t.Load(file, System.Windows.DataFormats.XamlPackage);
file.Close();
}
}
}
