ip位址檢查正規表達式 相容ipv4,ipv6

參考

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

優化後的表達式相容ipv4、ipv6

/// <summary>

/// 檢查輸入是否為ip位址字元串

/// </summary>

/// <param name="input">輸入字元串</param>

/// <returns></returns>

private static bool IsIPAddress(string input)

{

    //原作者表達式@"^(\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})$");

}

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");

本文轉自火地晉部落格園部落格，原文連結：http://www.cnblogs.com/yelaiju/archive/2012/06/30/2570863.html，如需轉載請自行聯系原作者