Correct pattern for Regex.Split

Question

In C#, I'm receiving strings such as:

ABC123456DEF
123456
ABC123456
123456DEF

What I would like to do is split the numbers from the string so ideally the output for the above would be:

'ABC', '123456', 'DEF
'123456'
'ABC', '123456'
'123456', 'DEF'

Would someone please be able to advise the best way to handle this using Regex.Split?

Thank you.

Paul.

EDIT:

Being as I was marked down, I thought I better show what I have already. This only brings the alphanumeric's, not the numeric's:

string pattern = @"\d+";
string barcode = "ABC123456DEF";
string[] result = Regex.Split(barcode, pattern);

Why don't you try matching instead of splitting? [A-Z]+|[0-9]+ — Avinash Raj
– Avinash Raj, Commented Nov 17, 2014 at 12:06
I would just match ([0-9]+)|([A-Z]+), no need for Regex.Split here — Konrad Kokosa
– Konrad Kokosa, Commented Nov 17, 2014 at 12:07

2 revs, 2 users 88% · Accepted Answer · 2014-11-17 12:17:12Z

3

try this:

//Based on:

//.NET 4.5

//Program that uses Match, Regex: C#

using System;
using System.Text.RegularExpressions;

class Program
{
    static void Main()
    {
        String subject = "ABC123456DEF\n123456\nABC123456\n123456DEF"
        Regex regex = new Regex(@"([a-zA-Z]+)|([0-9]+)");
        foreach (Match match in regex.Matches(subject))
        {
            MessageBox.Show(match.Value);
        }
    }
}

edited Nov 17, 2014 at 12:17

community wiki

2 revs, 2 users 88%
Ahosan Karim Asik

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Comments

Viktor Hofer · Accepted Answer · 2018-03-14 14:20:48Z

1

Regex.Split is exactly what you should use here:

using System.Text.RegularExpressions;
using System.Linq;

string pattern = @"(\d+)";
string barcode = "ABC123456DEF";
string[] result = Regex.Split(barcode, pattern).Where(s => !string.IsNullOrEmpty(s)).ToArray();

answered Mar 14, 2018 at 14:20

Viktor Hofer

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Comments

Taemyr · Accepted Answer · 2014-11-17 12:16:54Z

0

The Regexp.match approach in the other answer is likely better, however if you absolutely have to use Regexp.split the following pattern should work;

(?<=[A-Z])(?=[0-9])|(?<=[0-9])(?=[A-Z])

answered Nov 17, 2014 at 12:16

Taemyr

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