c# - Can't binding ObservableCollection to ListView by MVVM -


on xamarin form, has rows data no content , display 1 row , empty.

in model :

 public class item     {         public string kind { get; set; }         public string etag { get; set; }         public string id { get; set; }         public snippet snippet { get; set; }         public contentdetails contentdetails { get; set; }         public status status { get; set; }         public statistics statistics { get; set; }     }      public class rootobject     {         public string kind { get; set; }         public string etag { get; set; }         public string nextpagetoken { get; set; }         public pageinfo pageinfo { get; set; }         public list<item> items { get; set; }     }

in viewmodel

private observablecollection<trendingmodel.rootobject> _trendingroots;     private readonly itrendingservice _trendingservice;       public observablecollection<trendingmodel.rootobject> trendingroots     {         { return _trendingroots; }         set         {             _trendingroots = value;             raiseprotertychanged(()=>trendingroots);         }     }

......

trendingroots = new observablecollection<trendingmodel.rootobject>(ridesresult);

the results 'tredingroots' -> trendinroot[0].items[i].snippet..... on view, listview :

 <listview x:name="lsthome" itemssource="{binding trendingroots}">         <listview.itemtemplate>             <datatemplate>                 <viewcell>                     <stacklayout                            orientation="horizontal">                          <image                                 source="{binding items.snippet.thumbnails.medium}"                                aspect="aspectfit"                                widthrequest="220"                                heightrequest="220"                                horizontaloptions="center"                                verticaloptions="center" />                         <label                                 text="{binding items.snippet.title}"                                horizontaloptions="center"                                verticaloptions="center">                          </label>                     </stacklayout>                 </viewcell>             </datatemplate>         </listview.itemtemplate>     </listview>

the final result listview has 1 item , item empty, in while,

  • the result must have 15 items.
  • display each item on listview item(currently empty, can't binding)

<listview x:name="lsthome" itemssource="{binding trendingroots[0].items}">     <listview.itemtemplate>         <datatemplate>             <viewcell>                 <stacklayout                        orientation="horizontal">                      <image                             source="{binding  snippet.thumbnails.medium}"                            aspect="aspectfit"                            widthrequest="220"                            heightrequest="220"                            horizontaloptions="center"                            verticaloptions="center" />                     <label                             text="{binding snippet.title}"                            horizontaloptions="center"                            verticaloptions="center">                      </label>                 </stacklayout>             </viewcell>         </datatemplate>     </listview.itemtemplate> </listview>

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