WPF - Making hyperlinks clickable

You need something that will parse the Text of the TextBlock and create the all the inline objects at runtime. For this you can either create your own custom control derived from TextBlock or an attached property.

For the parsing, you can search for URLs in the text with a regular expression. I borrowed a regular expression from A good url regular expression? but there are others available on the web, so you can choose the one which works best for you.

In the sample below, I used an attached property. To use it, modify your TextBlock to use NavigateService.Text instead of Text property:

<Window x:Class="DynamicNavigation.Window1"    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"    xmlns:local="clr-namespace:DynamicNavigation"    Title="Window1" Height="300" Width="300">    <StackPanel>        <!-- Type something here to see it displayed in the TextBlock below -->        <TextBox x:Name="url"/>        <!-- Dynamically updates to display the text typed in the TextBox -->        <TextBlock local:NavigationService.Text="{Binding Text, ElementName=url}" />    </StackPanel></Window>

The code for the attached property is given below:

using System;using System.Text.RegularExpressions;using System.Windows;using System.Windows.Controls;using System.Windows.Documents;namespace DynamicNavigation{    public static class NavigationService    {        // Copied from http://geekswithblogs.net/casualjim/archive/2005/12/01/61722.aspx        private static readonly Regex RE_URL = 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})*)?");        public static readonly DependencyProperty TextProperty = DependencyProperty.RegisterAttached(            "Text",            typeof(string),            typeof(NavigationService),            new PropertyMetadata(null, OnTextChanged)        );        public static string GetText(DependencyObject d)        { return d.GetValue(TextProperty) as string; }        public static void SetText(DependencyObject d, string value)        { d.SetValue(TextProperty, value); }        private static void OnTextChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)        {            var text_block = d as TextBlock;            if (text_block == null)                return;            text_block.Inlines.Clear();            var new_text = (string)e.NewValue;            if ( string.IsNullOrEmpty(new_text) )                return;            // Find all URLs using a regular expression            int last_pos = 0;            foreach (Match match in RE_URL.Matches(new_text))            {                // Copy raw string from the last position up to the match                if (match.Index != last_pos)                {                    var raw_text = new_text.Substring(last_pos, match.Index - last_pos);                    text_block.Inlines.Add(new Run(raw_text));                }                // Create a hyperlink for the match                var link = new Hyperlink(new Run(match.Value))                {                    NavigateUri = new Uri(match.Value)                };                link.Click += OnUrlClick;                text_block.Inlines.Add(link);                // Update the last matched position                last_pos = match.Index + match.Length;            }            // Finally, copy the remainder of the string            if (last_pos < new_text.Length)                text_block.Inlines.Add(new Run(new_text.Substring(last_pos)));        }        private static void OnUrlClick(object sender, RoutedEventArgs e)        {            var link = (Hyperlink)sender;            // Do something with link.NavigateUri like:            Process.Start(link.NavigateUri.ToString());        }    }}

Here is the simplified version:

<TextBlock>    Hey, check out this link:            <Hyperlink NavigateUri="CNN.COM" Click="cnn_Click">Test</Hyperlink></TextBlock>

Something like this?

<TextBlock>    <TextBlock Text="Hey, check out this link:"/>    <Hyperlink NavigateUri={Binding ElementName=lvTopics, Path=SelectedValue.Title}                           Click="Url_Click">        <StackPanel Orientation="Horizontal">            <TextBlock Text="Feed: " FontWeight="Bold"/>            <TextBlock Text={Binding ElementName=lvTopics, Path=SelectedValue.Url}/>        </StackPanel>    </Hyperlink></TextBlock>

EDIT: If you need dynamic, bind it. In the example above, lvTopics(not shown) is bound to a list of objects with Title and Url properties.Also, it will not go to the url automatically, you need to handle it with a similar code:

private void Url_Click(object sender, RoutedEventArgs e){    browser.Navigate(((Hyperlink)sender).NavigateUri); }

I just wanted to show that you can embed anything into TextBlock, including Hyperlink, and anything into Hyperlink.