前言

今天發覺為什麼感覺每次我取得檔案位置方法，都不一樣，是錯覺嗎???? 不是是我從來都沒好好整理，所以今天使用到他，就直接一點整理一下杯。
版本:VS2010

範例網址

位址:http://localhost:3333/notebook/aspnet/aspnet002000.aspx/123?aa=123

語　法	結　果
System.Web.Hosting.HostingEnvironment.MapPath("~")	D:\local_web\notebook
Server.MapPath("~")	D:\local_web\notebook
My.Request.PhysicalApplicationPath	D:\local_web\notebook\
System.IO.Path.GetDirectoryName(My.Request.PhysicalPath)	D:\local_web\notebook\aspnet
My.Request.PhysicalPath	D:\local_web\notebook\aspnet\aspnet002000.aspx
System.IO.Path.GetFileName(My.Request.PhysicalPath)	aspnet002000.aspx
Page.ResolveClientUrl("~")	../../
Page.ResolveUrl("~")	/notebook/
My.Request.ApplicationPath	/notebook
My.Request.Path	/notebook/aspnet/aspnet002000.aspx/123
My.Request.RawUrl	/notebook/aspnet/aspnet002000.aspx/123?aa=123
My.Request.CurrentExecutionFilePath	/notebook/aspnet/aspnet002000.aspx
My.Request.CurrentExecutionFilePathExtension	.aspx
My.Request.AppRelativeCurrentExecutionFilePath	~/aspnet/aspnet002000.aspx
My.Request.Url.AbsolutePath	/notebook/aspnet/aspnet002000.aspx/123
My.Request.Url.AbsoluteUri	http://localhost:3333/notebook/aspnet/aspnet002000.aspx/123?aa=123
My.Request.Url.Scheme	http
My.Request.Url.Authority	localhost:3333
My.Request.Url.Host	localhost
My.Request.Url.Port	3333
My.Request.Url.PathAndQuery	/notebook/aspnet/aspnet002000.aspx/123?aa=123
My.Request.Url.LocalPath	/notebook/aspnet/aspnet002000.aspx/123
Join(My.Request.Url.Segments, " ")	/ notebook/ aspnet/ aspnet002000.aspx/ 123
My.Request.PathInfo	/123
My.Request.Url.Query	?aa=123

結語

取得檔案位置方法還真多，重複也很多，有沒有影響沒實驗過，如果有建議的，請多多指教謝謝。