获取IP
1、ASP.NET中获取获取服务器的IP地址： using System.Net; string myIP,myMac;System.Net.IPAddress[] addressList = Dns.GetHostByName(Dns.GetHostName()).AddressList; if ( addressList.Length>1)
{
myIP = addressList[0].ToString();
myMac = addressList[1].ToString();
} else
{
myIP = addressList[0].ToString();
myMac = "没有可用的连接"；
} myIP地址就是服务器端的ip地址。获取客户端的ip地址，可以使用//获取登录者ip地址string ip = Request.ServerVariables["REMOTE_ADDR"].ToString();
2、通过JS获取<html><head><title></title><meta http-equiv="Content-Type" content="text/html; charset=gbk"></head><body><object classid="CLSID:76A64158-CB41-11D1-8B02-00600806D9B6" id="locator" style="display:none;visibility:hidden"></object><object classid="CLSID:75718C9A-F029-11d1-A1AC-00C04FB6C223" id="foo" style="display:none;visibility:hidden"></object> <form name="myForm"> <br/>MAC地址：<input type="text" name="macAddress"> <br/>IP地址：<input type="text" name="ipAddress"> <br/>主机名：<input type="text" name="hostName"></form></body></html><script language="javascript"> var sMacAddr=""; var sIPAddr=""; var sDNSName=""; var service = locator.ConnectServer(); service.Security_.ImpersonationLevel=3; service.InstancesOfAsync(foo, 'Win32_NetworkAdapterConfiguration');</script><script FOR="foo" EVENT="OnObjectReady(objObject,objAsyncContext)" LANGUAGE="JavaScript">
if(objObject.IPEnabled != null && objObject.IPEnabled != "undefined" && objObject.IPEnabled == true){
if(objObject.IPEnabled && objObject.IPAddress(0) !=null && objObject.IPAddress(0) != "undefined")
sIPAddr = objObject.IPAddress(0);
if(objObject.MACAddress != null &&objObject.MACAddress != "undefined")
sMacAddr = objObject.MACAddress;
if(objObject.DNSHostName != null &&objObject.DNSHostName != "undefined")
sDNSName = objObject.DNSHostName;
}</script><script FOR="foo" EVENT="OnCompleted(hResult,pErrorObject, pAsyncContext)" LANGUAGE="JavaScript"> myForm.macAddress.value=sMacAddr; myForm.ipAddress.value=sIPAddr; myForm.hostName.value=sDNSName;</script>