转载地址：http://www.cnblogs.com/aspnetx/archive/2007/09/06/519875.html
又是在www.asp.net上找到的.因为其很简单并且作者也是直接了当把代码拿上来了,所以就不翻译了
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;
}
}
