求下这个正则
IP地址的正则表达式能用 马上结贴 在线等.IP地址 测试过的来 --------------------编程问答-------------------- 在线等急啊 正则真是不会 --------------------编程问答-------------------- /// <summary>
/// 是否为ip
/// </summary>
/// <param name="ip"></param>
/// <returns></returns>
public static bool IsIP(string ip)
{
return Regex.IsMatch(ip, @"^((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(2[0-4]\d|25[0-5]|[01]?\d\d?)$");
}
public static bool IsIPSect(string ip)
{
return Regex.IsMatch(ip, @"^((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){2}((2[0-4]\d|25[0-5]|[01]?\d\d?|\*)\.)(2[0-4]\d|25[0-5]|[01]?\d\d?|\*)$");
} --------------------编程问答-------------------- 简单点： \d+\.\d+\.\d+\.\d+
https://www.google.com/search?q=IP%E5%9C%B0%E5%9D%80%E7%9A%84%E6%AD%A3%E5%88%99%E8%A1%A8%E8%BE%BE%E5%BC%8F&oq=IP%E5%9C%B0%E5%9D%80%E7%9A%84%E6%AD%A3%E5%88%99%E8%A1%A8%E8%BE%BE%E5%BC%8F&aqs=chrome..69i57&sourceid=chrome&espv=210&es_sm=122&ie=UTF-8 --------------------编程问答--------------------
/// <summary>--------------------编程问答-------------------- /((?:(?:25[0-5]|2[0-4]\d|[01]?\d?\d)\.){3}(?:25[0-5]|2[0-4]\d|[01]?\d?\d))/
/// 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;
}
补充：.NET技术 , ASP.NET
