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This article mainly introduces the collection and collation of regular expressions commonly used in ASP.NET which have a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, let the editor take you to understand it.

"^ / positive $" / / non-negative integer (positive integer + 0)

"^ [0-9] * [1-9] [0-9] * $" / / positive integer

"^ (- / d+) (0 +) $" / / non-positive integer (negative integer + 0)

"^-[0-9] * [1-9] [0-9] * $" / / negative integer

"^ -? / dumped $" / / Integer

"^ / d + (/. / d +)? $" / / non-negative floating point number (positive floating point number + 0)

"^ (([0 # 9] + /. [0 # 9] * [1 # 9] [0 # 9] *) ([0 # 9] * [1 # 9] [0 # 9] * /. [0 # 9] +) ([0 # 9] * [1 # 9] [0 # 9] *) $" / / positive floating point number

"^ (- / d+ (/. / d+)?) (0 + (/ .0 +)?) $" / / non-positive floating point number (negative floating point number + 0)

"^ (- ([0-9] + /. [0-9] * [1-9] [0-9] *) ([0-9] * [1-9] [0-9] * /. [0-9] +) ([0-9] * [1-9] [0-9] *)) $" / / negative floating point number

"^ (-? / d +) (/. / d +)? $" / / floating point number

"^ [A-Za-z] + $" / / A string of 26 letters

"^ [Amurz] + $" / / A string of 26 English letters in uppercase

A string of 26 lowercase letters consisting of "^ [amurz] + $" / /

"^ [A-Za-z0-9] + $" / / A string of numbers and 26 letters

A string of numbers, 26 letters, or underscores

"^ [/ w -] + (/ .[ / w -] +) * @ [/ w -] + (/. [/ w -] +) + $" / / email address

"^ [a-zA-z] +: / / (/ w + (- / w +) *) (/. (/ w + (- / w +) *)) * (/? / S*)? $" / / url

^ [a-zA-Z] [a-zA-Z0-9 _] {515} $/ / verify the regular formula of the user name, which must start with a letter and can only include letters / numbers / underscores. The total length requirement is 6'16 digits.

^ [1-9] ([0-9] {16} | [0-9] {13}) [xX0-9] $/ / ID card (15-18 digits, which does not start with 0 but can end with x)

Thank you for reading this article carefully. I hope the article "collecting and sorting out the regular expressions commonly used in ASP.NET" shared by the editor will be helpful to you. At the same time, I also hope you will support us and pay attention to the industry information channel. More related knowledge is waiting for you to learn!

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