有没有人在啊，想请说下，asp.net(C#) 如何截取ip地址？
例如，获得的 ip 地址为 202.34.66.212我想在页面显示 202.34.66.*
asp.net(C#) 应该怎么做呢？
asp.net(C#) 如何截取ip地址
我想在页面显示 202.34.66.*
asp.net(C#) 应该怎么做呢？
最新回答
晚街听风
2024-04-15 04:45:26
原理:首先查找字符串最后一个"."的位置，然后再删除最后一个点后面的字符再加个"*"
举例：
string ip = Request.UserHostAddress;
ip=ip.Remove(ip.LastIndexOf('.')+1)+"*";
Response.Write(ip);
以上本机输出结果为127.0.0.*
当然你要不用Remove而用SubString截取最后个"."前的字符串加*也是可以的。
甚至你可以写个for语句再来一个一个字符的读，发现有三个"."后就不读了，然后+"*"，
甚至你还可以从字符后面读起碰到一个"."就跳出...
提供些思路自己领悟吧，C#处理字符串很强的
空城已无她
2024-04-15 12:40:06
...
string strIP = "202.34.66.212";
int position = strIP.LastIndexOf(".");
string result = strIP.SubString(0, position + 1) + @".*";
...
大概就是这个思路，呵呵，你可以再修改下下 :)
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