Regular Expressions 101

1st Alternative(?<=\W|^)c#(?=\W|$)

Positive Lookbehind(?<=\W|^)

1st Alternative\W

\Wany non-word character

2nd Alternative^

^start of string

c#the literal text c# (case insensitive)

Positive Lookahead(?=\W|$)

1st Alternative\W

\Wany non-word character

2nd Alternative$

$end of string

2nd Alternative(?<=\W|^)\.net(?=\W|$)

Positive Lookbehind(?<=\W|^)

1st Alternative\W

\Wany non-word character

2nd Alternative^

^start of string

\.the literal . (46₁₀ / 56₈ / 2E₁₆)

netthe literal text net (case insensitive)

Positive Lookahead(?=\W|$)

1st Alternative\W

\Wany non-word character

2nd Alternative$

$end of string

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

i modifier: insensitive. Matches without distinguishing uppercase and lowercase letters

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(?<=\W|^)c#(?=\W|$)|(?<=\W|^)\.net(?=\W|$)

s c# .net D