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C# Regex Examples C# Regex Class. C# Regex class represents the regular expression engine. ... Replacing multiple white spaces using Regex. The Regex.Replace () method is used to replace a matched string with a new string. ... Replacing multiple white spaces using Regex in C#. ... Regex for Email Validation in C#. ... Validating User Input With Regular Expressions in C#. ... More items...
The methods of the Regex class let you perform the following operations:
A regex-directed engine walks through the regex , attempting to match the next token in the regex to the next character. If a match is found, the engine advances through the regex and the subject string.
Need a regex to match Indian phone number of format +91-1234567890. Please suggest checks +91, then digits between 7-9 then validates 9 digits no in the end. hope this helps! //declaring boolean z and instantiating it to true.
– HaBo Nov 26 ’13 at 21:37. @HaBo: A regex can’t detect valid phone numbers, only validly formatted phone numbers. That said, no U.S. area codes begin with 0 or 1, so if you wanted, you could change the initial [0-9]{3} to [2-9][0-9][0-9]. – ruakh Nov 26 ’13 at 23:31. @joaquin: you are making a mistake here!