Creating a regex with text, number and url combination

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I am trying to create a regex for the following combination

Alphanumerictext1:1234:12:124:aplhnumericText2:www.stackoverflow.com

In the above format it should validate even if the text has alphanumeric(first field) or incremental values separated by :.

Below are few valid examples:

Alphanumerictext1
Alphanumerictext1:1234
Alphanumerictext1:1234:12
Alphanumerictext1:1234::124:aplhnumericText2
Alphanumerictext1::12
Alphanumerictext1:1234:12:124:aplhnumericText2:www.stackoverflow.com

For that wrote a partial regex like below ^([\w\s\.]+(:\d*){0,3})$ but unable fulfil for last 2 values that are separated by :aplhnumericText2 and www.stackoverflow.com.

regex-group regex c#
1 Answers

You may use this regex to validate all the examples provided:

^[\w\h.]+(?:(?::\d*){1,3}(?::\w*(?::\w+(?:\.\w+)*)?)?)?$

RegEx Demo

RegEx Details:

  • ^: Start
  • [\w\h.]+:
  • (?:: Start non-capture group #1
    • (?::\d*){1,3}: Match : followed by 0+ digits. Match 1 to 3 occurrences of this.
    • (?:: Start non-capture group #2
      • :\w*: Match : followed 0+ word characters
      • (?:: Start non-capture group #3
        • :\w+(?:\.\w+)*: Match : followed by a host name
      • )?: End optional non-capture group #3
    • )?: End optional non-capture group #2
  • )?: End optional non-capture group #1
  • $: End
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