c# - ASP.net not catching QueryString -


i have created asp.net application,where change language base on query string. have 2 servers both https ,but 1 redirected netscaler

https://testmylivecode.com https://mynetscalerserver.com/testapply-au4uc6q9du94nhzvza6zdtaqe433xa2a/?

for eg

https://testmylivecode.com/?ln=en

this asp.net code

string strnewlanguage = request.querystring["ln"].tolower(); sessionhelper.language = strnewlanguage ; string strnewurl = request.rawurl.tolower().replace("ln=" + request.querystring["ln"], "");  response.redirect(strnewurl);

what change language depending on querystring , change querystring , redirects

this works https server

https://testmylivecode.com/?ln=en

but doesnt work netscaler url

https://mynetscalerserver.com/testapply-au4uc6q9du94nhzvza6zdtaqe433xa2a/?

this url

and after added querystring it,it not work https://mynetscalerserver.com/testapply-au4uc6q9du94nhzvza6zdtaqe433xa2a/??ln=en

can why not working url has ? in it??? help

my suggestion change string contains '?', can't below instruction , code might writing below code based on language array, need modify based on requirement, help.it's bad code have modify make good

string[] obj = new string[5] {"hi","en","ar","or","xy" };                     string urlstring = request.rawurl.tolower();         int location = 0;         (int = 0; < obj.length; i++)         {             if (urlstring.contains("=" + obj[i]))             {                 location = i;                 break;             }         }         string strnewurl = request.rawurl.tolower().replace("ln=" + obj[location], "");         response.redirect(strnewurl);

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