HttpContext.Current.Request.Url.ToString() 并不可靠。

如果当前URL为
http://localhost/search.aspx?user=http://csharp.xdowns.com&tag=%BC%BC%CA%F5

通过HttpContext.Current.Request.Url.ToString()获取到的却是

http://localhost/search.aspxuser=http://csharp.xdowns.com&tag=¼¼Êõ

正确的方法是：HttpContext.Current.Request.Url.PathAndQuery1、通过ASP.NET获取
如果测试的url地址是http://www.test.com/testweb/default.aspx, 结果如下：
Request.ApplicationPath:??????????????? /testweb
Request.CurrentExecutionFilePath:?????? /testweb/default.aspx
Request.FilePath:?????????????????????? /testweb/default.aspx
Request.Path:?????????????????????????? /testweb/default.aspx
Request.PhysicalApplicationPath:??????? E:\WWW\testwebRequest.PhysicalPath:?????????????????? E:\WWW\testweb\default.aspx
Request.RawUrl:???????????????????????? /testweb/default.aspx
Request.Url.AbsolutePath:?????????????? /testweb/default.aspx
Request.Url.AbsoluteUrl:??????????????? http://www.test.com/testweb/default.aspx
Request.Url.Host:?????????????????????? www.test.com
Request.Url.LocalPath:????????????????? /testweb/default.aspx

2、通过JS获取

<table width=100% cellpadding=0 cellspacing=0 border=0 >

<script>

thisURL = document.URL;

thisHREF = document.location.href;

thisSLoc = self.location.href;

thisDLoc = document.location;

strwrite = "<tr><td valign=top>thisURL: </td><td>[" + thisURL + "]</td></tr>"

strwrite += "<tr><td valign=top>thisHREF: </td><td>[" + thisHREF + "]</td></tr>"

strwrite += "<tr><td valign=top>thisSLoc: </td><td>[" + thisSLoc + "]</td></tr>"

strwrite += "<tr><td valign=top>thisDLoc: </td><td>[" + thisDLoc + "]</td></tr>"

document.write( strwrite );

</script>

thisDLoc = document.location; <BR>

thisURL = document.URL; <BR>

thisHREF = document.location.href; <BR>

thisSLoc = self.location.href;<BR>

<script>

thisTLoc = top.location.href;

thisPLoc = parent.document.location;

thisTHost = top.location.hostname;

thisHost = location.hostname;

strwrite = "<tr><td valign=top>thisTLoc: </td><td>[" + thisTLoc + "]</td></tr>"

strwrite += "<tr><td valign=top>thisPLoc: </td><td>[" + thisPLoc + "]</td></tr>"

strwrite += "<tr><td valign=top>thisTHost: </td><td>[" + thisTHost + "]</td></tr>"

strwrite += "<tr><td valign=top>thisHost: </td><td>[" + thisHost + "]</td></tr>"

document.write( strwrite );

</script>

thisTLoc = top.location.href; <BR>

thisPLoc = parent.document.location; <BR>

thisTHost = top.location.hostname; <BR>

thisHost = location.hostname;<BR>

<script>

tmpHPage = thisHREF.split( "/" );

thisHPage = tmpHPage[ tmpHPage.length-1 ];

tmpUPage = thisURL.split( "/" );

thisUPage = tmpUPage[ tmpUPage.length-1 ];

strwrite = "<tr><td valign=top>thisHPage: </td><td>[" + thisHPage + "]</td></tr>"

strwrite += "<tr><td valign=top>thisUPage: </td><td>[" + thisUPage + "]</td></tr>"

document.write( strwrite );

</script><tr><td>

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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.IPAddre