Regex.Escape()

Regex.Escape()

Regex.Escape()

Regex.Escape()

string abbr      = "memb";
string word      = "Member";
string pattern   = String.Format("b{0}b", Regex.Escape(abbr));
string substitue = String.Format("[a title="{0}"]{1}[/a]", word, abbr);
string output    = Regex.Replace(input, pattern, substitue);

b(?:{abbr_1}|{abbr_2}|{abbr_3}|{abbr_n})b

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            var input = @"This is just a little test of the memb to see if it gets picked up.
Deb of course should also be caught here.";
            var dictionary = new Dictionary<string,string>
            {
                {"memb", "Member"}
                ,{"deb","Debut"}
            };
            var regex = "(" + String.Join(")|(", dictionary.Keys.ToArray()) + ")";
            foreach (Match metamatch in Regex.Matches(input
               , regex  /*@"(memb)|(deb)"*/
               , RegexOptions.IgnoreCase | RegexOptions.ExplicitCapture))
            {
                input = input.Replace(metamatch.Value, dictionary[metamatch.Value.ToLower()]);
            }
            Console.Write (input);
            Console.ReadLine();
        }
    }
}

var abbrsWithPipes = "(abbr1|abbr2)";
var regex = new Regex(abbrsWithPipes);
return regex.Replace(html, m => GetReplaceForAbbr(m.Value));

public partial class Abbreviations : System.Web.UI.UserControl
{
    private Dictionary<String, String> dictionary = DataHelper.GetAbbreviations();

    protected void Page_Load(object sender, EventArgs e)
    {
        string input = "This is just a little test of the memb. And another memb, but not amemba to see if it gets picked up. Deb of course should also be caught here.deb!";

        var regex = "\b(?:" + String.Join("|", dictionary.Keys.ToArray()) + ")\b";

        MatchEvaluator myEvaluator = new MatchEvaluator(GetExplanationMarkup);

        input = Regex.Replace(input, regex, myEvaluator, RegexOptions.IgnoreCase);

        litContent.Text = input;
    }

    private string GetExplanationMarkup(Match m)
    {
        return string.Format("<b title='{0}'>{1}</b>", dictionary[m.Value.ToLower()], m.Value);
    }
}

This is just a little test of the <b title='Member'>memb</b>. And another <b title='Member'>memb</b>, but not amemba to see if it gets picked up. <b title='Debut'>Deb</b> of course should also be caught here.<b title='Debut'>deb</b>!

public static string GetGlossaryString(string str)
        {
            List<string> glossaryWords = GetGlossaryItems();//this collection would contain your abbreviations; you could just make it a Dictionary so you can have the abbreviation-full term pairs and use them in the loop below

            str = string.Format(" {0} ", str);//quick and dirty way to also search the first and last word in the content.

            foreach (string word in glossaryWords)
                str = Regex.Replace(str, "([\W])(" + word + ")([\W])", "$1<span class='glossaryItem'>$2</span>$3", RegexOptions.IgnoreCase);

            return str.Trim();
        }