c# - Error with await operator -

there problem code. how can solve problem? problem in await operator.

 public mymodel()      {         httpclient client = new httpclient();         httpresponsemessage response = await client.getasync("https://api.vkontakte.ru/method/video.get?uid=219171498&access_token=d61b93dfded2a37dfcfa63779efdb149653292636cac442e53dae9ba6a049a75637143e318cc79e826149");         string googlesearchtext = await response.content.readasstringasync();         jobject googlesearch = jobject.parse(googlesearchtext);         ilist<jtoken> results = googlesearch["response"].children().skip(1).tolist();         ilist<mainpage1> searchresults = new list<mainpage1>();         foreach (jtoken result in results)         {             mainpage1 searchresult = jsonconvert.deserializeobject<mainpage1>(result.tostring());             searchresults.add(searchresult);          } 

you're trying use await within constructor. can't - constructors always synchronous.

you can use await within method or anonymous function async modifier; can't apply modifier constructors.

one approach fixing create static async method create instance - relevant awaiting, , pass results simple synchronous constructor. callers need handle appropriately, of course.

public static async task<mymodel> createinstance() {     string googlesearchtext;     using (httpclient client = new httpclient())     {         using (httpresponsemessage response = await client.getasync(...))         {             googlesearchtext = await response.content.readasstringasync();         }     }     // synchronous constructor rest...     return new mymodel(googlesearchtext); }