c# - RestSharp - array as querystring parameter -

i can't pass array (an int array) query string parameter restsharp client

var client = new restclient(baseurl); client.authenticator = new httpbasicauthenticator(username, password);  var request = new restrequest(_endpoint, method.get);             request.addheader("cache-control", "no-cache");             request.addheader("contenttype", "application/json; charset=utf-8");             request.addheader("accept", "text/html, application/xhtml+xml, image/jxr, */*");   //i tried request.addparameter("messageids", "[1,2,3]"); or request.addparameter("messageids", new int[] {1,2,3} ); or request.addqueryparameter("messageids", "[1,2,3]"); or request.addqueryparameter("messageids", new int[] {1,2,3} ); 

i suppose problem related urlencoding of parameters

in case pass values "new int[] {1,2,3}" (both addparameter , addqueryparameter) url built in way:

responseuri = {https://demo.xxxxxxxx.com:8181/ws/messages/zippedmessages?messageids=system.int32[]} 

in case pass values string "[1,2,3]" (both addparameter , addqueryparameter) url built in way:

responseuri = {https://demo.xxxxxxxx.com:8181/ws/messages/zippedmessages?messageids=[1%2c2%2c3]} 

instead working url should be:

responseuri = {https://demo.xxxxxxxx.com:8181/ws/messages/zippedmessages?messageids=%5b1,2,3%5d} 

or @ least:

responseuri = {https://demo.xxxxxxxx.com:8181/ws/messages/zippedmessages?messageids=[1,2,3]} 

the "addparameter" method encodes comma not [ ] , should opposite.

is there way change behaviour? exist preexecute event relpace characters? or other workaround?