System.Text.RegularExpressions Library

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#parsing [10], #digits [6], #web [5], #text [5], #replace [4], #simple [4], #numbers [4], #group [3], #example [3], #remove [3], #string [3], #html [2], #validate [2], #uri [2], #split [2], #datetime [2], #date [2], #non capturing [2], #sample [2], #ip address [2], #ip [2], #dns [2], #space [2], #number [2], #language [2], #file [2], #0-100 [2], #numbers between 0 to 100 [2], #0 to 100 [2], #mail [1]

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stackoverflow [14], admin [7], mahajan344 [3], nitrogeniy [1], jnickel [0], gsanfordm [0], Jasper [0], bwilliams [0], Sree24 [0], oysteinheimstad [0], msicc [0], netregex [0], regex [0]

Validate numbers

If Possible, Don't Use Regex To Validate Numbers. If at all possible, use your language. There may be functions to help you determine if the value contained by a string is a valid number. That being said, if you're accepting a variety of formats (commas, etc.) you may not have a choice.

Type: match, Date: 7/12/2015 4:07:04 PMAuthor: stackoverflow

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Regular expression to extract the year (1900 - 2099) from a string

Getting year from text. If you want validate textbox value - use this pattern with "^" and "$": ^((19|20)\d{2})$

Type: match, Date: 3/28/2015 4:38:20 PMAuthor: admin

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