C# 正则表达式判断IP

判断IP格式方法：//From:www.uzhanbao.com public static bool ValidateIPAddress(string ipAddress) { Regex validipregex=new Regex(@"^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$"); return (ipAddress!=""&&validipregex.IsMatch(ipAddress.Trim()))?true:false; }