using
System;
using
System.Collections.Generic;
System.Text;
System.Text.RegularExpressions;
namespace
CoreWebLibrary.Text.RegularExpressions
{
///<summary>
AutilityclasscontainingfrequentlyusedRegularExpressionPatterns
andtwoutilitymethodstoseeifapassedstringconformstothedesignated
pattern.
</summary>
publicclassPatterns
{
conststringEMAIL=@"^([0-9a-zA-Z]+[-._+&])*[0-9a-zA-Z]+@([-0-9a-zA-Z]+[.])+[a-zA-Z]{2,6}$";
stringUS_ZIPCODE=@"^\d{5}$";
stringUS_ZIPCODE_PLUS_FOUR=@"^\d{5}((-|\s)?\d{4})$";
stringUS_ZIPCODE_PLUS_FOUR_OPTIONAL=@"^\d{5}((-|\s)?\d{4})?$";
PermissiveUSTelephoneRegex.Doesnotallowextensions.
</summary><example>Allows:324-234-3433,3242343434,(234)234-234,(234)234-2343
</example>stringUS_TELEPHONE=@"^([\(]{1}[0-9]{3}[\)]{1}[\.||\-]{0,1}|^[0-9]{3}[\.|\-|]?)?[0-9]{3}(\.|\-|)?[0-9]{4}$";
Thismatchesaurlinthegenericformat
scheme://authority/path?query#fragment
Allows:http://www.yahoo.com,https://www.yahoo.com stringURL=@"^(?<Protocol>\w+):\/\/(?<Domain>[\w.]+\/?)\S*$";
Thismatchesanipaddressintheformatxxx-xxx-xxx-xxx
eachgroupofxxxmustbelessthanorequalto255
Allows:123.123.123.123,192.168.1.1
stringIP_ADDRESS=@"^(?<First>2[0-4]\d|25[0-5]|[01]?\d\d?)\.(?<Second>2[0-4]\d|25[0-5]|[01]?\d\d?)\.(?<Third>2[0-4]\d|25[0-5]|[01]?\d\d?)\.(?<Fourth>2[0-4]\d|25[0-5]|[01]?\d\d?)$";
Thismatchesadateintheformatmm/dd/yy
Allows:01/05/05,12/30/99,04/11/05
Doesnotallow:01/05/2000,2/2/02
</example>stringDATE_MM_DD_YY=@"^(1[0-2]|0[1-9])/(([1-2][0-9]|3[0-1]|0[1-9])/\d\d)$";
Thismatchesadateintheformatmm/yy
Allows:01/05,11/05,04/99
Doesnotallow:1/05,13/05,00/05
stringDATE_MM_YY=@"^((0[1-9])|(1[0-2]))\/(\d{2})$";
Thismatchesonlynumbers(nodecimals)
Allows:0,1,123,4232323,1212322
stringIS_NUMBER_ONLY=@"^([1-9]\d*)$|^0$";
Thismatchesanystringwithonlyalphacharactersupperorlowercase(A-Z)
Allows:abc,ABC,abCd,AbCd
Doesnotallow:AC,abc!,(a,b)
stringIS_ALPHA_ONLY=@"^[a-zA-Z]+$";
Thismatchesanystringwithonlyuppercasealphacharacter(A-Z)
stringIS_UPPER_CASE=@"^[A-Z]+$";
Thismatchesanystringwithonlylowercasealphacharacter(A-Z)
stringIS_LOWER_CASE=@"^[a-z]+$";
Ensuresthestringonlycontainsalpha-numericcharacters,and
notpunctuation,spaces,linebreaks,etc.
Allows:ab2c,112ABC,ab23Cd
stringIS_ALPHA_NUMBER_ONLY=@"^[a-zA-Z0-9]+$";
ValidatesUSCurrency.Requires$sign
Allowsforoptionalcommasanddecimal.
Noleadingzeros.
Allows:$100,000or$10000.00or$10.00or$.10or$0or$0.00
Doesnotallow:$0.10or10.00or10,000stringIS_US_CURRENCY=@"^\$(([1-9]\d*|([1-9]\d{0,2}(\,\d{3})*))(\.\d{1,2})?|(\.\d{1,2}))$|^\$[0](.00)?$";
Matchesmajorcreditcardsincluding:Visa(length16,prefix4);
Mastercard(length16,prefix51-55);
DinersClub/CarteBlanche(length14,prefix36,38,or300-305);
Discover(length16,prefix6011);
AmericanExpress(length15,prefix34or37).
Savesthecardtypeasanamedgrouptofacilitatefurthervalidation
againsta"cardtype"checkBoxinaprogram.
All16digitformatsaregrouped4-4-4-4withanoptionalhyphenorspace
betweeneachgroupof4digits.
TheAmericanExpressformatisgrouped4-6-5withanoptionalhyphenorspace
betweeneachgroupofdigits.
Formattingcharactersmustbeconsistant,i.e.iftwogroupsareseparatedbyahyphen,
allgroupsmustbeseparatedbyahyphenforamatchtooccur.
stringCREDIT_CARD=@"^(?:(?<Visa>4\d{3})|(?<Mastercard>5[1-5]\d{2})|(?<Discover>6011)|(?<DinersClub>(?:3[68]\d{2})|(?:30[0-5]\d))|(?<AmericanExpress>3[47]\d{2}))([-]?)(?(DinersClub)(?:\d{6}\1\d{4})|(?(AmericanExpress)(?:\d{6}\1\d{5})|(?:\d{4}\1\d{4}\1\d{4})))$";
Matchessocialsecurityinthefollowingformatxxx-xx-xxxx
wherexisanumber
Allows:123-45-6789,232-432-1212
stringSOCIAL_SECURITY=@"^\d{3}-\d{2}-\d{4}$";
Matchesx,xwherexisaname,spacesareonlyallowedbetweencommaandname
Allows:christophersen,eric;christophersen,eric
Notallowed:christophersen,eric;
stringNAME_COMMA_NAME=@"^[a-zA-Z]+,\s?[a-zA-Z]+$";
privatePatterns()
{
}
Checkstoseeifthepassedinputhasthepassedpattern
<paramname="pattern">Thepatterntouse</param><paramname="input">Theinputtocheck<returns>Trueiftheinputhasthepattern,falSEOtherwise</returns>staticboolHasPattern(stringpattern,255)">stringinput)
{
RegexregEx=newRegex(pattern);
returnregEx.IsMatch(input);
}
Checksthepassedinputtomakesureithasallthepatternsinthe
passedpatternsarray
<paramname="patterns">ArrayofpatternsStringvaluetocheckTrueiftheinputhasallofthepatterns,falSEOtherwise.boolHasPatterns(string[]patterns,255)">stringinput)
{
for(inti=0;i<patterns.Length;i++)
{
if(Patterns.HasPattern(patterns[i],input)==false)
returnfalse;
}
true;
}
}
