Question

I have a string:

productDescription

In it are some custom tags such as:

[MM][/MM]

For example the string might read:

This product is [MM]1000[/MM] long

Using a regular expression how can I find those MM tags, take the content of them and replace everything with another string? So for example the output should be:

This product is 10 cm long

Answer 1

I think you’ll need to pass a delegate to the regex for that.

Regex theRegex = new Regex(@"\[MM\](\d+)\[/MM\]");
text = theRegex.Replace(text, delegate(Match thisMatch)
{

    int mmLength = Convert.ToInt32(thisMatch.Groups[1].Value);
    int cmLength = mmLength / 10;
    return cmLength.ToString() + "cm";
});