ip地址检查正则表达式 兼容ipv4,ipv6

参考

http://www.cnblogs.com/winnxm/archive/2008/12/15/1355111.html

优化后的表达式兼容ipv4、ipv6

方法

 

 
  /// 
    
  <summary> 
  
 
  /// 
   检查输入是否为ip地址字符串
 
  /// 
    
  </summary> 
  
 
  /// 
    
  <param name="input"> 
  输入字符串 
  </param> 
  
 
  /// 
    
  <returns></returns> 
  
 
  private  
  static  
  bool IsIPAddress( 
  string input) 
  
{ 
  
     
  // 
  原作者表达式@"^(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])$" 
  
     
  return Regex.IsMatch(input,  
  @" 
  ^(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])((\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])){3}|(\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])){5})$ 
  "); 
  
} 
 

测试

 
  static  
  void Main( 
  string[] args) 
  
{ 
  
     
  bool bt = IsIPAddress( 
  " 
  192.168.0.0 
  "); 
  
    bt = IsIPAddress( 
  " 
  192.168.2.3.1.1 
  "); 
  
    bt = IsIPAddress( 
  " 
  bd5.168.2.1 
  "); 
  
    bt = IsIPAddress( 
  " 
  192.168.254.10 
  "); 
  
    bt = IsIPAddress( 
  " 
  192.168.254.10.1.1.1.1 
  "); 
  
    bt = IsIPAddress( 
  " 
  192.168.254.10.1.1.1 
  "); 
  
}