C # common Regular expression collation

Match phone number
Regex regphone = new Regex ("^[0-9]+[-]?[ 0-9]+[-]? [0-9]$ ");

Matching numbers
Regex regnumber = new Regex ("^[0-9]+$");

Match positive and negative integers
Regex regnumbersign = new Regex ("^[+-]?[ 0-9]+$ ");

Match decimal
Regex regdecimal = new Regex ("^[0-9]+[.]"? [0-9]+$ ");

Match positive and negative decimal
Regex regdecimalsign = new Regex ("^[+-]?[ 0-9]+[.]? [0-9]+$];//equivalent to ^[+-]?d+[.]? d+$

Match email address
A string of W-letters or numbers, as in [a-za-z0-9] syntax
Regex regemail = new Regex ("^[\w-]+@[\w-]+\." Com|net|org|edu|mil|tv|biz|info) $ ");

Match Chinese
Regex regchzn = new Regex ("[U4e00-u9fa5]");

Only numbers can be entered: "^[0-9]*$".

Only n digits can be entered: "^d{n}$".

You can enter at least n digits: "^d{n,}$".

You can enter only the number of m~n digits:. "^d{m,n}$"

Only numbers beginning with 0 and not 0 can be entered: ^ (0|[ 1-9][0-9]*) $ ".

You can only enter positive real numbers with two decimal digits: ^[0-9]+ (. [ 0-9]{2})? $ ".

You can only enter positive real numbers with 1~3 decimal places: ^[0-9]+ (. [ 0-9]{1,3})? $ ".

You can only enter a Non-zero positive integer: "^+?" [1-9] [0-9]*$].

You can only enter a Non-zero negative integer: "^-[1-9][]0-9" *$.

You can only enter characters with a length of 3: "^. {3}$ ".

You can only enter a string of 26 English letters: "^[a-za-z]+$".

You can only enter a string consisting of 26 uppercase letters: "^[a-z]+$".

You can only enter a string consisting of 26 lowercase English letters: "^[a-z]+$".

You can only enter a string consisting of numbers and 26 English letters: "^[a-za-z0-9]+$".

You can only enter a string of numbers, 26 English letters, or underscores: "^w+$".

Verify user password: "^[a-za-z]w{5,17}$" is the correct format: start with a letter, length between 6~18, can only contain characters, numbers, and underscores.

Verify that there are ^%& ',; =?$ ' characters: "[^%&",; = $x 22]+ ".

Verify ID Number (15-bit or 18-digit): "^d{15}|d{18}$".

Verify 12 months of the year: "^" (0?[ 1-9]|1[0-2]) $ "The correct format is:" 01 "~" 09 "and" 1 "~" 12 ".

Verify one months of 31 days: "^ (0?[ 1-9]) | ((1|2) [0-9]) |30|31) $ "correct format for;" 01 "~" 09 "and" 1 "~" 31 ".