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This article mainly introduces "how to use the C# regular expression Regex class". In the daily operation, I believe that many people have doubts about how to use the C# regular expression Regex class. The editor has consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful to answer the doubts about "how to use the C# regular expression Regex class". Next, please follow the editor to study!

1. C # regular expression symbol pattern character description\ escape character, escape a character with special function into a normal character, or vice versa ^ match the start position of the input string $match the end position of the input string * match the previous zero or more subexpressions + match the previous one or more subexpressions? Matching the previous zero or once subexpression {n} n is a non-negative integer, matching the previous n-th subexpression {n,} n is a non-negative integer, at least matching the previous n-th subexpression {n ~ m} m and n are non-negative integers, where n

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