asp.net mvc - ActionLink with parameters not working? -

i trying call action result parameters show null?

here actionlink:

@html.actionlink("add", "apnewquote", "apquotes", new {oenum = model.oenumber, quotenumber = model.quotenumber, claimnumber = model.claimnumber, motorbodyrepairer = model.motorbodyrepairer, vehicleregistration = model.vehicleregistration, vehiclemakeid = model.vehiclemakeid, vehiclemodelid = model.vehiclemodelid, vehiclerangeid = model.vehiclerangeid}, new { @class = "btn btn-primary nicebutton" }) 

and in controller:

public actionresult apnewquote(string oenum, string quotenumber, string claimnumber, string motorbodyrepairer, string vehicleregistration, int? vehiclemakeid, int? vehiclemodelid, int? vehiclerangeid) {  //do things variables passed in   apnewquoteviewmodel viewmodel = new apnewquoteviewmodel  {   oenumber = oenumber,   quotenumber = quotenumber,   claimnumber = claimnumber,   motorbodyrepairer = motorbodyrepairer,   vehicleregistration = vehicleregistration,   vehiclemakeid = vehiclemakeid,   vehiclemakes = vehiclemakes,   vehiclemodelid = vehiclemodelid,   vehiclemodels = vehiclemodels,   vehicleranges = vehicleranges,   vehiclerangeid = vehiclerangeid,   date = date  };   return view(viewmodel); } 

the above method used initialy display view fine if input parameters null, when call action result again need use parameters can't null.

i can run project revive null when click on action link, move right method.

can try accessing ike : request.params[0]