c# - Change the Query String Content edit or split from web config file (QUERY_STRING server variable) -

i have problem regarding isapi rule in web.config file. want change content of query string. means want split query string can remove undesired data before writing url.

<rule name="something">  <matchurl=".?" />   <condition logicalgrouping="matchall">       <add input="{query_string}" pattern={something2} />   </condition>   <action type="redirect" url="http://{http_host}{url}querystring"appendquerystring="true" redirecttype="found" /> 

now want remove part of querystring. how can that? know how split or edit contents of querystring?

use uribuilder , httputility this. first drop url uribuilder:

var uri = new uribuilder(url); uri.port = -1; 

now work query string:

var query = httputility.parsequerystring(uri.query); 

then remove ones don't want:

query.remove("parmname"); 

and put together:

uri.query = query.tostring(); var newurl = uri.tostring();