c# - Adding custom argument to rest callback action -

i've ran problem programming basic tool listing few 'items' (and respective price on ingame auction-house) video-game in wpf-window.

i price trend specific item (id) last 30 days rest-service delivers me this:

[{"timestamp":"1453892281000","buy":"3411","sell":"3791"},{...},...] 

i'm requesting price trend around 100 items @ time (all async) , when handling responsedata class fields of response through restsharp. problem can't match responsedata item rest-response doesn't deliver me one. there way add id (integer) action/callback?

public static void getitempricehistory(int itemid, listingsview view) {     var request = new restrequest("itempricetrend/" + itemid);     action<list<restitempricehistory>> ariph = view.processitempricehistory;     executeasync(request, ariph); }  public static void executeasync<t>(restrequest request, action<t> callback) t : new() {     var client = new restclient();     client.baseurl = baseurl;      var asynchandle = client.executeasync<t>(request, aresp => {         callback(aresp.data);     }); } 

i hope problem understandable if not, please , i'll try best provide different explanation :)

i found out how can it: adding second argument action:

 action<list<restitempricehistory>, int> ariph = view.processitempricehistory; 

and because of ofcourse @ callback:

callback(aresp.data, itemid); 

seems simpel now, not sure why didn't try earlier :)