Question

Currently, I use:

Variabls:

 int recordCount = 5;
 Header = "Index"; // Can also be "Starting Index"

Header:

 Header = Header.Split(' ')[0] + " (" + recordCount + ")";

Changes:

 Index (5)

To:

 Index (6)

When I want to replace the Header with a new Header, I use the above, but the problem is that when I start using more than one word in the Header it removes the rest of the Header Name. i.e. When it says Starting Index: it only shows Starting.

Can I use Regex to simply look for the value inbetween the parenthesis and replace it with another variable?

Answer 1

Regex re = new Regex(@"\(\w+\)");
string input = "Starting Index: (12asd)";
string replacement = "12ddsa";
string result = re.Replace(input, replacement);

If you need to perform more complex replacements (i.e. if the replacement depends on captured value between the braces), you’ll have to stick with Regex.Match method

Update: with Match thing quickly get ugly 🙂

 Regex re = new Regex(@"^(.*)\((\w+)\)\s*$");
 string input = "Starting Index: (12)";
 var match = re.Match(input);

 string target = match.Groups[2].Value;
 //string replacement = target + "!!!!"; // general string operation
 int autoincremented = Convert.ToInt32(target) + 1; // if you want to autoincrement

 string result = String.Format("{0}: ({1})", match.Groups[1].Value, autoincremented);