string s01 = Request.ApplicationPath; //testweb
string s02 = Request.CurrentExecutionFilePath; //testweb/default.aspx
string s03 = Request.FilePath; //testweb/default.aspx
string s04 = Request.Path; //testweb/default.aspx
string s05 = Request.PathInfo;
string s06 = Request.PhysicalApplicationPath; //E:WWW estweb
string s07 = Request.PhysicalPath; //E:WWW estwebdefault.aspx
string s08 = Request.RawUrl; //testweb/default.aspx
string s09 = Request.Url.AbsolutePath; //testweb/default.aspx
string s10 = Request.Url.AbsoluteUri; //http://www.test.com/testweb/default.aspx
string s11 = Request.Url.Host; //www.test.com
string s12 = Request.Url.LocalPath; //testweb/default.aspx