RegExp selecting strings surrounded by brackets

Question

My purpouse is to select every character which is surrounded by { and }, this is easily achievable using this regexp {\w*}.

I've developed an extenstion method for strings:

 public static IEnumerable<string> ObtainTokens(this string originalString)
 {
 Regex expression = new Regex(@"{\w*}");
 foreach (Match element in expression.Matches(originalString))
 {
 //Exclude the brackets from the returned valued
 yield return Regex.Replace(element.Value, @"{*}*", "");
 }
 }

Is there a way to get rid of of Regex.Replace? Returning the values as IEnumerable is a good choice?

Answer 1

Modify your regexp: {(\w*)} and then replace:

yield return Regex.Replace(element.Value, @"{*}*", "");

with

yield return element.Groups[1].Value;

ps: full code is avaialbe here

• Abaco: By applying your suggestion on the test string {THIS} is a {TEST} the response is an IEnumerable<string> containing two empty string.
• Akim: regex has beed updated to capture groups: {(\w*)}