Regular Expression in .NET Examples
I will try to guide you step by step on how to write our own regular expression. The purpose of this article is Easily create and understand regular expressions. This will helpful, when we create an application.
Examples of regular expressions
Example No.1
Syntax:
\d{3}
Example: 289
Description: A Three digit number
Example No.2
Syntax:
\w{8,20}
Example: Christopher
Description: At least eight character. But not more than twenty characters.
Example No.3
Syntax:
\d{2}-\d{4}
Example: 10-3944
Description: Two Digit number followed by a hyphen and a four-digit number.
Example No.4
Syntax:
\w{1,8}.\w{1,3}
Example: Sample.jpg
Description: Up to eight letters or numbers,followed by a period and up to three letters or numbers
Example No.5
Syntax:
(AB)|(SB)-\d{1,5}
Example: SB-1234
Description: The letters AB or SB, followed by a hyphen and a 1 to 5 digit number .
Example No.6
Syntax:
\d{5}(-\d{4})?
Example: 93711-2767
Description: A Five digit number,optionally followed by a hyphen and four digit number.
Example No.7
Syntax:
\w*\d\w*
Example: arm02
Description: A text entry that contains at least numeral.
Example No.8
Syntax:
[xyz]\d{3}
Example: x023
Description: The letter x,y, or z followed by a 3 digit number.