Parse xml string and replace a particular character in C#

Question

Hi, I have a xml value in string which is having almost 500 characters.In that string if there is a character ' Thanks, Prasant

Jignesh Trivedi · Answer

hi, If you develped web application then you can also use " HttpUtility.HtmlEncode " which is from "System.Web" name space. example: string xml = @" Tove Jani Reminder 1 Don't forget "; ; string encodedXml = System.Web.HttpUtility.HtmlEncode(xml); Output : Tove Jani Reminder 1 < 2 Don't forget please refer http://weblogs.sqlteam.com/mladenp/archive/2008/10/21/Different-ways-how-to-escape-an-XML-string-in-C.aspx hope this will help you.

Vulpes · Answer

I can't promise that this will deal with everything but it should be able to deal with simple cases. The idea is to first isolate all the tags and replace the ' After doing this you can then find the remaining ' Finally, you can replace the '~' with ' using System; using System.Text.RegularExpressions; class Test { static void Main() { string xml = @" Tove Jani Reminder 1 Don't forget "; string regExp = @" "; MatchCollection mc = Regex.Matches(xml, regExp); foreach(Match m in mc) { string val = m.Groups[1].Value; string regExp2 = " )"; Match m2 = Regex.Match(xml, regExp2); if (m2.Success) { char[] chars = xml.ToCharArray(); chars[m2.Index] = '~'; xml = new string(chars); xml = Regex.Replace(xml, @" ", "~/" + val + ">"); } xml = Regex.Replace(xml, @" xml = Regex.Replace(xml, @" } string regExp3 = @" "; Match m3 = Regex.Match(xml, regExp3); if (m3.Success) { char[] chars = xml.ToCharArray(); chars[m3.Index] = '~'; xml = new string(chars); } xml = Regex.Replace(xml, " xml = Regex.Replace(xml, "~", " Console.WriteLine(xml); Console.ReadKey(); } } The output should be: Tove Jani Reminder 1 < 2 Don't forget <me this weekend!