In the C# code use the QueryString array within the Request object to retrieve request values.
In the example below the query string parameter named “parm” (no quotes) was received in the HTTP GET request.
Request URL:
http://www.example.com?parm=thisvalue
C# code:
String valu = Request.QueryString[“parm”];
The string valu would contain the value “thisvalue” (no quotes) after the statement above was executed.