Request.Url.Host = asp.net.do
Request.Url.ToString = http://asp.net.do/test/requesturl.aspx
Request.ApplicationPath.ToString = /test
Request.RawUrl.ToString = /test/requesturl.aspx
Page.TemplateSourceDirectory = /test
Request.Url.AbsoluteUri = http://asp.net.do/test/requesturl.aspx

Taken from : http://asp.net.do/test/requesturl.aspx