啥也不说看代码哈~
Codeusing System;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;
namespace Utility
{
public class ISExt
{
private static ISExt instance = null;
public static ISExt GetInstance()
{
if (ISExt.instance == null)
{
ISExt.instance = new ISExt();
}
return ISExt.instance;
}
private ISExt()
{
}
/// <summary>
/// 判断是否为数字
/// </summary>
/// <param name="oText">源字符串</param>
/// <returns>返回值 true false</returns>
public static bool IsNumberic(string oText)
{
try
{
int var1 = Convert.ToInt32(oText);
return true;
}
catch (Exception ex)
{
LogWriter.AddSystemException(ex);
return false;
}
}
/// <summary>
/// 判断输入的字符串只包含汉字
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static bool IsChineseCh(string input)
{
Regex regex = new Regex("^[\u4e00-\u9fa5]+$");
return regex.IsMatch(input);
}
/// <summary>
/// 匹配3位或4位区号的电话号码，其中区号可以用小括号括起来，
/// 也可以不用，区号与本地号间可以用连字号或空格间隔，
/// 也可以没有间隔
/// \(0\d{2}\)[- ]?\d{8}|0\d{2}[- ]?\d{8}|\(0\d{3}\)[- ]?\d{7}|0\d{3}[- ]?\d{7}
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static bool IsPhone(string input)
{
string pattern = "^\\(0\\d{2}\\)[- ]?\\d{8}$|^0\\d{2}[- ]?\\d{8}$|^\\(0\\d{3}\\)[- ]?\\d{7}$|^0\\d{3}[- ]?\\d{7}$";
Regex regex = new Regex(pattern);
return regex.IsMatch(input);
}
/**/
/// <summary>
/// 转半角的函数(DBC case)
/// </summary>
/// <param name="input">任意字符串</param>
/// <returns>半角字符串</returns>
///<remarks>
///全角空格为12288，半角空格为32
///其他字符半角(33-126)与全角(65281-65374)的对应关系是：均相差65248
///</remarks>
public static string ToDBC(string input)
{
char[] c = input.ToCharArray();
for (int i = 0; i < c.Length; i++)
{
if (c[i] == 12288)
{
c[i] = (char)32;
continue;
}
if (c[i] > 65280 && c[i] < 65375)
c[i] = (char)(c[i] - 65248);
}
return new string(c);
}
/// <summary>
/// 转全角的函数(SBC case)
/// </summary>
/// <param name="input">任意字符串</param>
/// <returns>全角字符串</returns>
///<remarks>
///全角空格为12288，半角空格为32
///其他字符半角(33-126)与全角(65281-65374)的对应关系是：均相差65248
///</remarks>
public static string ToSBC(string input)
{
//半角转全角：
char[] c = input.ToCharArray();
for (int i = 0; i < c.Length; i++)
{
if (c[i] == 32)
{
c[i] = (char)12288;
continue;
}
if (c[i] < 127)
c[i] = (char)(c[i] + 65248);
}
return new string(c);
}
/// <summary>
/// 判断是否为小于9位的数字 内线电话
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static bool IsInterphone(string input)
{
if (!IsDBC(input))
{
return false;
}
//input = ToDBC(input);
if (input.Length < 9)
{
string pattern = "^-?\\d+$|^(-?\\d+)(\\.\\d+)?$";
Regex regex = new Regex(pattern);
return regex.IsMatch(input);
}
else
{
return false;
}
}
/// <summary>
/// 判断是否是全角
/// </summary>
/// <param name="input">字符串</param>
/// <returns></returns>
public static bool IsSBC(string input)
{
if (2 * input.Length == Encoding.Default.GetByteCount(input))
{
return true;
}
else
{
return false;
}
}
/// <summary>
/// 判断是否是半角
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static bool IsDBC(string input)
{
if (input.Length == Encoding.Default.GetByteCount(input))
{
return true;
}
else
{
return false;
}
}
/// <summary>
/// 判断输入的字符串是否是一个合法的手机号
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static bool IsMobilePhone(string input)
{
Regex regex = new Regex("^13\\d{9}$");
return regex.IsMatch(input);
}
/// <summary>
/// 判断输入的字符串只包含数字
/// 可以匹配整数和浮点数
/// ^-?\d+$|^(-?\d+)(\.\d+)?$
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static bool IsNumber(string input)
{
string pattern = "^-?\\d+$|^(-?\\d+)(\\.\\d+)?$";
Regex regex = new Regex(pattern);
return regex.IsMatch(input);
}
/// <summary>
/// 匹配非负整数
///
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static bool IsNotNagtive(string input)
{
Regex regex = new Regex(@"^\d+$");
return regex.IsMatch(input);
}
/// <summary>
/// 匹配正整数
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static bool IsUint(string input)
{
Regex regex = new Regex("^[0-9]*[1-9][0-9]*$");
return regex.IsMatch(input);
}
/// <summary>
/// 判断输入的字符串字包含英文字母
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static bool IsEnglisCh(string input)
{
Regex regex = new Regex("^[A-Za-z]+$");
return regex.IsMatch(input);
}
/// <summary>
/// 判断输入的字符串是否是一个合法的Email地址
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static bool IsEmail(string input)
{
string pattern = @"^([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$";
Regex regex = new Regex(pattern);
return regex.IsMatch(input);
}
/// <summary>
/// 判断输入的字符串是否只包含数字和英文字母
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static bool IsNumAndEnCh(string input)
{
string pattern = @"^[A-Za-z0-9]+$";
Regex regex = new Regex(pattern);
return regex.IsMatch(input);
}
/// <summary>
/// 判断输入的字符串是否是一个超链接
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static bool IsURL(string input)
{
//string pattern = @"http://([\w-]+\.)+[\w-]+(/[\w- ./?%&=]*)?";
string pattern = @"^[a-zA-Z]+://(\w+(-\w+)*)(\.(\w+(-\w+)*))*(\?\S*)?$";
Regex regex = new Regex(pattern);
return regex.IsMatch(input);
}
/// <summary>
/// 判断输入的字符串是否是表示一个IP地址
/// </summary>
/// <param name="input">被比较的字符串</param>
/// <returns>是IP地址则为True</returns>
public static bool IsIPv4(string input)
{
string[] IPs = input.Split('.');
Regex regex = new Regex(@"^\d+$");
for (int i = 0; i < IPs.Length; i++)
{
if (!regex.IsMatch(IPs[i]))
{
return false;
}
if (Convert.ToUInt16(IPs[i]) > 255)
{
return false;
}
}
return true;
}
/// <summary>
/// 计算字符串的字符长度，一个汉字字符将被计算为两个字符
/// </summary>
/// <param name="input">需要计算的字符串</param>
/// <returns>返回字符串的长度</returns>
public static int GetCount(string input)
{
return Regex.Replace(input, @"[\u4e00-\u9fa5/g]", "aa").Length;
}
/// <summary>
/// 调用Regex中IsMatch函数实现一般的正则表达式匹配
/// </summary>
/// <param name="pattern">要匹配的正则表达式模式。</param>
/// <param name="input">要搜索匹配项的字符串</param>
/// <returns>如果正则表达式找到匹配项，则为 true；否则，为 false。</returns>
public static bool IsMatch(string pattern, string input)
{
Regex regex = new Regex(pattern);
return regex.IsMatch(input);
}
/// <summary>
/// 从输入字符串中的第一个字符开始，用替换字符串替换指定的正则表达式模式的所有匹配项。
/// </summary>
/// <param name="pattern">模式字符串</param>
/// <param name="input">输入字符串</param>
/// <param name="replacement">用于替换的字符串</param>
/// <returns>返回被替换后的结果</returns>
public static string Replace(string pattern, string input, string replacement)
{
Regex regex = new Regex(pattern);
return regex.Replace(input, replacement);
}
/// <summary>
/// 在由正则表达式模式定义的位置拆分输入字符串。
/// </summary>
/// <param name="pattern">模式字符串</param>
/// <param name="input">输入字符串</param>
/// <returns></returns>
public static string[] Split(string pattern, string input)
{
Regex regex = new Regex(pattern);
return regex.Split(input);
}
/// <summary>
/// 判断输入的字符串是否是合法的IPV6 地址
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public static bool IsIPV6(string input)
{
string pattern = "";
string temp = input;
string[] strs = temp.Split(':');
if (strs.Length > 8)
{
return false;
}
int count = ISExt.GetStringCount(input, "::");
if (count > 1)
{
return false;
}
else if (count == 0)
{
pattern = @"^([\da-f]{1,4}:){7}[\da-f]{1,4}$";
Regex regex = new Regex(pattern);
return regex.IsMatch(input);
}
else
{
pattern = @"^([\da-f]{1,4}:){0,5}::([\da-f]{1,4}:){0,5}[\da-f]{1,4}$";
Regex regex1 = new Regex(pattern);
return regex1.IsMatch(input);
}
}
/* *******************************************************************
* 1、通过“:”来分割字符串看得到的字符串数组长度是否小于等于8
* 2、判断输入的IPV6字符串中是否有“::”。
* 3、如果没有“::”采用 ^([\da-f]{1,4}:){7}[\da-f]{1,4}$ 来判断
* 4、如果有“::” ，判断"::"是否止出现一次
* 5、如果出现一次以上 返回false
* 6、^([\da-f]{1,4}:){0,5}::([\da-f]{1,4}:){0,5}[\da-f]{1,4}$
* ******************************************************************/
/// <summary>
/// 判断字符串compare 在 input字符串中出现的次数
/// </summary>
/// <param name="input">源字符串</param>
/// <param name="compare">用于比较的字符串</param>
/// <returns>字符串compare 在 input字符串中出现的次数</returns>
private static int GetStringCount(string input, string compare)
{
int index = input.IndexOf(compare);
if (index != -1)
{
return 1 + GetStringCount(input.Substring(index + compare.Length), compare);
}
else
{
return 0;
}
}
}
}
