RichTextBlockExSample/RichTextBlockEx.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Text.RegularExpressions;
using Windows.ApplicationModel.Email;
using Windows.Foundation.Metadata;
using Windows.System;
using Windows.UI;
using Windows.UI.Text;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Documents;
using Windows.UI.Xaml.Media;

namespace RichTextBlockExSample
{
    public enum RichTextType
    {
        Mention,
        Email,
        PhoneNumber,
        Webite,
        HtmlTag
    }

    public class MatchResult
    {
        public Match Match { get; set; }

        public string Path { get; set; }

        public RichTextType RichTextType { get; set; }
    }

    public class RichTextBlockEx
    {
        private const string PhoneRegex = @"[+]{0,1}(\d){1,3}[ ]?([-]?((\d)|[ ]){1,12})+";
        private const string EmailRegex = @"[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+";
      

        private static readonly Regex EmailAddressRegex = new Regex(EmailRegex, RegexOptions.IgnoreCase);
        private static readonly Regex PhoneNumberRegex = new Regex(PhoneRegex, RegexOptions.IgnoreCase);
       

        public static string GetRichText(DependencyObject obj)
        {
            return (string)obj.GetValue(RichTextProperty);
        }

        public static void SetRichText(DependencyObject obj, string value)
        {
            obj.SetValue(RichTextProperty, value);
        }

        // Using a DependencyProperty as the backing store for Text.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty RichTextProperty =
            DependencyProperty.RegisterAttached("RichText", typeof(string), typeof(RichTextBlockEx), new PropertyMetadata(null, RichTextChanged));