Hello Carles,

I am attaching the sample project I put together to test the binding functionality so you can use it as a reference.

Hello Maria,

I'm trying to get is the same effect that I have here:
<RichTextBox Visibility = "Visible" x: Name = "TextLinkUrl" IsReadOnly = "True" IsDocumentEnabled = local "True": RTBNavigationService.Content = "{Binding Text, ElementName = TextWithUrl}" PreviewMouseLeftButtonDown = "TextLinkUrl_MouseLeftButtonDown">

but by code, the RTBNavigationService, works correctamense me, just do not know how to apply this binding by code correctly

the RTBNavigationService code is as follows:

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media.Imaging;

namespace RichTextBox_Hyperlink
{
public static class RTBNavigationService
{
private static readonly Regex regexUrl = new Regex(@"(?#Protocol)(?:(?:ht|f)tp(?:s?)\:\/\/|~/|/)?(?#Username:Password)(?:\w+:\w+@)?(?#Subdomains)(?:(?:[-\w]+\.)+(?#TopLevel Domains)(?:com|org|net|gov|mil|biz|info|mobi|name|aero|jobs|museum|travel|[a-z]{2}))(?#Port)(?::[\d]{1,5})?(?#Directories)(?:(?:(?:/(?:[-\w~!$+|.,=]|%[a-f\d]{2})+)+|/)+|\?|#)?(?#Query)(?:(?:\?(?:[-\w~!$+|.,*:]|%[a-f\d{2}])+=(?:[-\w~!$+|.,*:=]|%[a-f\d]{2})*)(?:&(?:[-\w~!$+|.,*:]|%[a-f\d{2}])+=(?:[-\w~!$+|.,*:=]|%[a-f\d]{2})*)*)*(?#Anchor)(?:#(?:[-\w~!$+|.,*:=]|%[a-f\d]{2})*)?");
private static readonly Regex regexSmilies = new Regex(@"(:\)(?!\)))");

public static readonly DependencyProperty ContentProperty = DependencyProperty.RegisterAttached(
"Content",
typeof(string),
typeof(RTBNavigationService),
new PropertyMetadata(null, OnContentChanged)
);

public static string GetContent(DependencyObject d)
{ return d.GetValue(ContentProperty) as string; }

public static void SetContent(DependencyObject d, string value)
{ d.SetValue(ContentProperty, value); }

private static void OnContentChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
RichTextBox richTextBox = d as RichTextBox;
if (richTextBox == null)
return;

string content = (string)e.NewValue;
if (string.IsNullOrEmpty(content))
return;

richTextBox.Document.Blocks.Clear();

int lastPos = 0;
Paragraph block = new Paragraph();
foreach (Match match in regexSmilies.Matches(content))
{
if (match.Index != lastPos)
block.Inlines.Add(content.Substring(lastPos, match.Index - lastPos));

BitmapImage bitmapSmiley = new BitmapImage(new Uri("giggle.gif", UriKind.Relative));
Image smiley = new Image();
smiley.Source = bitmapSmiley;
smiley.Width = bitmapSmiley.Width;
smiley.Height = bitmapSmiley.Height;
block.Inlines.Add(smiley);

lastPos = match.Index + match.Length;
}
if (lastPos < content.Length)
block.Inlines.Add(content.Substring(lastPos));
richTextBox.Document.Blocks.Add(block);

List<Hyperlink> results = new List<Hyperlink>();
//foreach (Match match in regexUrl.Matches(content.Replace(Environment.NewLine,"")))
foreach (Match match in regexUrl.Matches(content))
{
TextPointer p1 = richTextBox.ToTextPointer(match.Index);
TextPointer p2 = richTextBox.ToTextPointer(match.Index + match.Length);
if (p1 == null || p2 == null)
{
//Donothing
}
else
{
var link = new Hyperlink(p1, p2);
try {
if (p2.GetTextInRun(LogicalDirection.Backward).ToString().Substring(0,7) == "http://") { link.NavigateUri = new Uri(p2.GetTextInRun(LogicalDirection.Backward).ToString()); }
else { link.NavigateUri = new Uri("http://"+p2.GetTextInRun(LogicalDirection.Backward).ToString()); }
}
catch { }
link.Click += OnUrlClick;

}
}
}

private static void OnUrlClick(object sender, RoutedEventArgs e)
{
if (Keyboard.IsKeyDown(Key.LeftCtrl) || Keyboard.IsKeyDown(Key.RightCtrl))
{
var link = (Hyperlink)sender;
Process.Start(link.NavigateUri.ToString());
}
}

public static TextPointer ToTextPointer(this RichTextBox rtb, int index)
{
int count = 0;
TextPointer position = rtb.Document.ContentStart.GetNextContextPosition(LogicalDirection.Forward).GetNextContextPosition(LogicalDirection.Forward);
while (position != null)
{
if (position.GetPointerContext(LogicalDirection.Forward) == TextPointerContext.Text)
{
string textRun = position.GetTextInRun(LogicalDirection.Forward);
int length = textRun.Length;
if (count + length > index)
{
return position.GetPositionAtOffset(index - count);
}
count += length;
}
position = position.GetNextContextPosition(LogicalDirection.Forward);
}
return null;
}

}
}

on the other hand, I'm testing the code you've told me, and I indicates that the run does not contain the definition of TextProperty, so I'm going to dig a little about it

thank you very much

Hi Matthew Kraft

SORRY, 

yes, this is the RichTextBox .NET provided control in WPF?

i need in c# not in xaml

thank you very much