///<summary>
/// 判断是否是Ip地址
/// </summary>
/// <param name="str1"></param>
/// <returns></returns>
public static bool IsIPAddress(string ip) {
if (string.IsNullOrEmpty(ip) || ip.Length < 7 || ip.Length > 15) return false;
string regformat = @"^(\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])$";
Regex regex = new Regex(regformat, RegexOptions.IgnoreCase);
return regex.IsMatch(ip);
}
public static bool IsIPPort(string port)
{
bool isPort = false;
int portNum;
isPort = Int32.TryParse(port, out portNum);
if (isPort && portNum >= 0 && portNum <= 65535)
{
isPort = true;
}
else
{
isPort = false;
}
return isPort; }