代码如下
using System;using System.Collections.Generic;using System.Text;using System.Text.RegularExpressions;namespace CoreWebLibrary.Text.RegularExpressions
{
/// <summary>
/// A utility class containing frequently used Regular Expression Patterns /// and two utility methods to see if a passed string conforms to the designated /// pattern.
/// </summary> public class Patterns { public const string EMAIL = @"^([0-9a-zA-Z]+[-._+&])*[0-9a-zA-Z]+@([-0-9a-zA-Z]+[.])+[a-zA-Z]{2,6}$" ; public const string US_ZIPCODE = @"^\d{5}$" ; public const string US_ZIPCODE_PLUS_FOUR = @"^\d{5}((-|\s)?\d{4})$"; public const string US_ZIPCODE_PLUS_FOUR_OPTIONAL = @"^\d{5}((-|\s)?\d{4})?$" ; /// <summary> /// Permissive US Telephone Regex. Does not allow extensions. /// </summary> /// <example> /// Allows: 324-234-3433, 3242343434, (234)234-234, (234) 234-2343 /// </example> public const string US_TELEPHONE = @"^([\(]{1}[0-9]{3}[\)]{1}[\.| |\-]{0,1}|^[0-9]{3}[\.|\-| ]?)?[0-9]{3}(\.|\-| )?[0-9]{4}$"; /// <summary> /// This matches a url in the generic format /// scheme://authority/path?query#fragment /// </summary> /// <example> /// Allows: http://www.yahoo.com, https://www.yahoo.com, ftp://www.yahoo.com /// </example> public const string URL = @"^(?<Protocol>\w+):\/\/(?<Domain>[\w.]+\/?)\S*$"; /// <summary> /// This matches an ip address in the format xxx-xxx-xxx-xxx /// each group of xxx must be less than or equal to 255 /// </summary> /// <example> /// Allows: 123.123.123.123, 192.168.1.1 /// </example> public const string IP_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?)$"; /// <summary> /// This matches a date in the format mm/dd/yy /// </summary> /// <example> /// Allows: 01/05/05, 12/30/99, 04/11/05 /// Does not allow: 01/05/2000, 2/2/02 /// </example> public const string DATE_MM_DD_YY = @"^(1[0-2]|0[1-9])/(([1-2][0-9]|3[0-1]|0[1-9])/\d\d)$"; /// <summary> /// This matches a date in the format mm/yy /// </summary> /// <example> /// Allows: 01/05, 11/05, 04/99 /// Does not allow: 1/05, 13/05, 00/05 /// </example> public const string DATE_MM_YY = @"^((0[1-9])|(1[0-2]))\/(\d{2})$"; /// <summary> /// This matches only numbers(no decimals) /// </summary> /// <example> /// Allows: 0, 1, 123, 4232323, 1212322 /// </example> public const string IS_NUMBER_ONLY = @"^([1-9]\d*)$|^0$"; /// <summary> /// This matches any string with only alpha characters upper or lower case(A-Z) /// </summary> /// <example> /// Allows: abc, ABC, abCd, AbCd /// Does not allow: A C, abc!, (a,b) /// </example> public const string IS_ALPHA_ONLY = @"^[a-zA-Z]+$"; /// <summary> /// This matches any string with only upper case alpha character(A-Z) /// </summary> public const string IS_UPPER_CASE = @"^[A-Z]+$"; /// <summary> /// This matches any string with only lower case alpha character(A-Z) /// </summary> public const string IS_LOWER_CASE = @"^[a-z]+$"; /// <summary> /// Ensures the string only contains alpha-numeric characters, and /// not punctuation, spaces, line breaks, etc. /// </summary> /// <example> /// Allows: ab2c, 112ABC, ab23Cd /// Does not allow: A C, abc!, a.a /// </example> public const string IS_ALPHA_NUMBER_ONLY = @"^[a-zA-Z0-9]+$"; /// <summary> /// Validates US Currency. Requires $ sign /// Allows for optional commas and decimal. /// No leading zeros. /// </summary> /// <example>Allows: $100,000 or $10000.00 or $10.00 or $.10 or $0 or $0.00 /// Does not allow: $0.10 or 10.00 or 10,000</example> public const string IS_US_CURRENCY = @"^\$(([1-9]\d*|([1-9]\d{0,2}(\,\d{3})*))(\.\d{1,2})?|(\.\d{1,2}))$|^\$[0](.00)?$"; /// <summary> /// Matches major credit cards including: Visa (length 16, prefix 4); /// Mastercard (length 16, prefix 51-55); /// Diners Club/Carte Blanche (length 14, prefix 36, 38, or 300-305); /// Discover (length 16, prefix 6011); /// American Express (length 15, prefix 34 or 37). /// Saves the card type as a named group to facilitate further validation /// against a "card type" checkbox in a program. /// All 16 digit formats are grouped 4-4-4-4 with an optional hyphen or space /// between each group of 4 digits. /// The American Express format is grouped 4-6-5 with an optional hyphen or space /// between each group of digits. /// Formatting characters must be consistant, i.e. if two groups are separated by a hyphen, /// all groups must be separated by a hyphen for a match to occur. /// </summary> public const string CREDIT_CARD = @"^(?:(?<Visa>4\d{3})|(?<Mastercard>5[1-5]\d{2})|(?<Discover>6011)|(?<DinersClub>(?:3[68]\d{2})|(?:30[0-5]\d))|(?<AmericanExpress>3[47]\d{2}))([ -]?)(?(DinersClub)(?:\d{6}\1\d{4})|(?(AmericanExpress)(?:\d{6}\1\d{5})|(?:\d{4}\1\d{4}\1\d{4})))$"; /// <summary> /// Matches social security in the following format xxx-xx-xxxx /// where x is a number /// </summary> /// <example> /// Allows: 123-45-6789, 232-432-1212 /// </example> public const string SOCIAL_SECURITY = @"^\d{3}-\d{2}-\d{4}$"; /// <summary> /// Matches x,x where x is a name, spaces are only allowed between comma and name /// </summary> /// <example> /// Allows: christophersen,eric; christophersen, eric /// Not allowed: christophersen ,eric; /// </example> public const string NAME_COMMA_NAME = @"^[a-zA-Z]+,\s?[a-zA-Z]+$"; private Patterns() { } /// <summary> /// Checks to see if the passed input has the passed pattern /// </summary> /// <param name="pattern">The pattern to use</param> /// <param name="input">The input to check</param> /// <returns>True if the input has the pattern, false otherwise</returns> public static bool HasPattern( string pattern, string input ) { Regex regEx = new Regex(pattern); return regEx.IsMatch(input); } /// <summary> /// Checks the passed input to make sure it has all the patterns in the /// passed patterns array /// </summary> /// <param name="patterns">Array of patterns</param> /// <param name="input">String value to check</param> /// <returns>True if the input has all of the patterns, false otherwise.</returns> public static bool HasPatterns(string[] patterns, string input) { for (int i = 0; i < patterns.Length; i++) { if (Patterns.HasPattern(patterns[i], input) == false) return false; } return true; } }