Regular expressions for e-mail messages

One of the regular expressions that appears to be an e-mail message

\w+ ([-+.] \w) *@\w+ ([-.] \w+) *\.\w+ ([-.] \w+) *
or \[email protected]\s+\.\s+.
are common e-mail regular expressions

RegularExpressionValidator don't have to explain, the base control, verify that the input conforms to the


[......] Match any one of the characters in parentheses
[^ ...] Match any one character that is not in parentheses
\w Match (A~Z,A~Z,0~9)
\w matches any one whitespace character
\s matches any one non-whitespace character
\s matches any non-word character
\d matches any one number
\d matches any one non-numeric
[\b] matches a backspace key letter
{n,m} matches at least the preceding expression n times, up to M times
{N,} at least match the preceding expression n times
{n} exactly matches the preceding expression n times
Match the previous expression 0 or 1 times
+ Minimum match 1 times preceding expression
* min. Match previous expression 0 times
| match front or back expressions
(...) Combine items in a cell
^ Match string start
$ match End of string
\b Match character boundaries
\b A location that matches a non-character boundary

\w+ "\w represents the word character, including all the letters, all the numbers, the left and right underscore + indicates that the word character appears one or more times, but appears at least once"
([-+. '] \w+) * "[] the contents of the composition class, can only be the four characters one of the \w+ above said two brackets for grouping, that is, the parentheses inside as a whole * means that the content in parentheses appears 0 or more times"
@ "On behalf of himself"
\w+ "said above."
([-.] \w+) * "also said [] there is only one inside." represents any character except for line feeds and carriage returns "
\.\w+ "said above."
([-.] \w+) * "said above"

Regular expressions for e-mail messages