Regular expression with no maximum limit

I Need a regular expression which accepts all types of characters (alphabets, numbers and all special characters), and miniumum number of characters should be 15 and no l开发者_运维问答imit for maximum characters.

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.{15,}

Assuming that you use settings where the dot matches all characters. It's really hard to be any more specific unless you mention which platform you're using.

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The basic repetition options for regex are as follows:

• x? matches zero or one x
• x* matches zero or more x
• x+ matches one or more x
• x{3} matches exactly 3 x
• x{3,} matches at least 3 x
• x{3,5} matches at least 3 and at most 5 x

To match absolutely any character, you use . in single-line mode. To enable single-line mode, consult documentation for your specific language. In Java, this is (?s)/Pattern.DOTALL.

If by "all types of characters" you really mean everything but whitespace, then there's a special character class for that: \S (with a capital S). The pattern you're looking for is therefore:

• \S{15,}

References

• regular-expressions.info
  • Repetition
  • The Dot Matches (Almost) Any Character
  • Character Classes

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Ehm.. Using a regular expression when you just want to check the length of a string? Try something like

inputString.Length >= 15