Question

I have following regulare expression string

(\d+)(((.|,)\d+)+)?(ms|s| ms| s)

It validates if user entered a correct string for milliseconds and seconds.
Example of possible values are

• 100ms
• 100s
• 100 ms
• 100 s
• 52.55 s

for further operations I need to seperate out the string and the number, for example, if value entered is 123.45ms I should get 123.45 and ms.

As of now I’m only getting the number and string is lost!

I can split the numbers and string in two different steps, but I’m interested in doing at once, any suggetions how can I do it?

Answer 1

You use groups:

        string s = "123.45ms";
        Match m = Regex.Match(s, @"(\d+([.,]\d+)?) *(ms|s)");

        if (m.Success)
        {
            Console.WriteLine(m.Groups[1]);
            Console.WriteLine(m.Groups[3]);
        }