You may at times need to get different values from URL.

Below example shows different ways of extracting different parts of URL

EXAMPLE: (Sample URL)

http://localhost:60527/WebSite1test/Default2.aspx?QueryString1=1&QueryString2=2

CODE

Response.Write("<br/>Host " + HttpContext.Current.Request.Url.Host);
Response.Write("<br/>Authority: " + HttpContext.Current.Request.Url.Authority);
Response.Write("<br/>Port: " + HttpContext.Current.Request.Url.Port);
Response.Write("<br/>AbsolutePath: " + HttpContext.Current.Request.Url.AbsolutePath);
Response.Write("<br/>ApplicationPath: " + HttpContext.Current.Request.ApplicationPath);
Response.Write("<br/>AbsoluteUri: " + HttpContext.Current.Request.Url.AbsoluteUri);
Response.Write("<br/>PathAndQuery: " + HttpContext.Current.Request.Url.PathAndQuery);

OUTPUT

Host: localhost
Authority: localhost:60527
Port: 60527
AbsolutePath: /WebSite1test/Default2.aspx
ApplicationPath: /WebSite1test
AbsoluteUri: http://localhost:60527/WebSite1test/Default2.aspx?QueryString1=1&QueryString1=2
PathAndQuery: /WebSite1test/Default2.aspx?QueryString1=1&QueryString2=2

You can copy paste above sample code & run it in asp.net web form application with different URL.

I also recommend reading ASP.Net Routing in case you may use ASP Routing then you don’t need to use traditional URL with query string.

http://msdn.microsoft.com/en-us/library/cc668201%28v=vs.100%29.aspx