C#结合正则表达式判断各种用户输入合法性

[csharp] 
using System; 
using System.Text.RegularExpressions; 
 
 namespace SG_VQCDataCollection 
{ 
    /// <summary> 
    /// 通过Framwork类库中的Regex类实现了一些特殊功能数据检查 
     /// </summary> 
     public class MetarnetRegex 
    { 
 
         private static MetarnetRegex instance = null; 
         public static MetarnetRegex GetInstance() 
         { 
           if (MetarnetRegex.instance == null) 
             { 
                 MetarnetRegex.instance = new MetarnetRegex(); 
             } 
             return MetarnetRegex.instance; 
         } 
         private MetarnetRegex() 
         { 
         } 
 
         /// <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("^[\一-\龥]+$"); 
 
            //改了一下 
 
             Regex regex = new Regex("^[\一-\龥]+$"); 
             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> 
         /// 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, @"[\一-\龥/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 = MetarnetRegex.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; 
             } 
 
         } 
     } 
 }