- Related Questions & Answers
- Explain quantifiers in Java regular expressions
- Explain C# Substitution in regular expression
- Explain C# Grouping Constructs in regular expression
- Possessive quantifiers Java Regular expressions
- Reluctant quantifiers Java Regular expressions
- Explain the concept of Regular expression.
- Regex quantifiers in Java Regular Expressions
- Explain Python regular expression search vs match
- Explain JavaScript Regular Expression modifiers with examples
- Greedy quantifiers Java Regular expressions in java.
- Explain the Star Height of Regular Expression and Regular Language
- Quantifiers in C#
- Explain Regular Expression "\A" Metacharacter in Java
- Explain Regular Expression "\w" Metacharacter in Java
- Explain Regular Expression "\s" Metacharacter in Java

- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who

Quantifiers in C# specify how many instances of the previous element (which can be a character, a group, or a character class) must be present in the input string for a match to occur.

Quantifier | Description | Pattern | Matches |
---|---|---|---|

* | Matches the previous element zero or more times. | \d*\.\d | ".0", "19.9", "219.9" |

+ | Matches the previous element one or more times. | "be+" | "bee" in "been", "be" in "bent" |

? | Matches the previous element zero or one time. | "rai?n" | "ran", "rain" |

{ n } | Matches the previous element exactly n times. | ",\d{3}" | ",043" in "1,043.6", ",876", ",543", and ",210" in "9,876,543,210" |

{ n ,} | Matches the previous element at least n times. | "\d{2,}" | "166", "29", "1930" |

{ n , m } | Matches the previous element at least n times, but no more than m times. | "\d{3,5}" | "166", "17668" "19302" in "193024" |

*? | Matches the previous element zero or more times, but as few times as possible. | \d*?\.\d | ".0", "19.9", "219.9" |

*? | Matches the previous element zero or more times, but as few times as possible. | \d*?\.\d | ".0", "19.9", "219.9" |

+? | Matches the previous element one or more times, but as few times as possible. | "be+?" | "be" in "been", "be" in "bent" |

?? | Matches the previous element zero or one time, but as few times as possible. | "rai??n" | "ran", "rain" |

{ n }? | Matches the preceding element exactly n times. | ",\d{3}?" | ",043" in "1,043.6", ",876", ",543", and ",210" in "9,876,543,210" |

{ n ,}? | Matches the previous element at least n times, but as few times as possible. | "\d{2,}?" | "166", "29", "1930" |

{ n , m }? | Matches the previous element between n and m times, but as few times as possible. | "\d{3,5}?" | "166", "17668" "193", "024" in "193024" |

Advertisements