主题：[求助]IP 端口

telnet命令 https://www.baidu.com/baidu?wd=telnet

ip地址正则，参考 https://www.baidu.com/baidu?wd=ip+%E6%AD%A3%E5%88%99

1、http://www.foxtable.com/bbs/dispbbs.asp?BoardID=2&ID=105012&skin=0

2、

Dim pattern As String = "^((25[0-5]|2[0-4]\d|((1\d{2})|([1-9]?\d)))\.){3}(25[0-5]|2[0-4]\d|((1\d{2})|([1-9]?\d)))$"
Dim txt As String= "192.168.1.302"
Dim rgx = new System.Text.RegularExpressions.Regex(pattern, System.Text.RegularExpressions.RegexOptions.IgnoreCase)
If rgx.isMatch(txt) = False Then
    msgbox("请输入正确的ip!")
Else
    msgbox("正确")
End If