c# - Use RunOnUIThread in ListFragment Activity Xamarin android -


i want perform background opertaion in listfragment activity, not working, writing code uithread part not running causes error an unhandled exception occurred , app crashes 

activity.runonuithread(() => {    listadaptersession = new sessionadapter(activity, sessiondata);    listsession.adapter = listadaptersession;    listadaptersession.notifydatasetchanged();    fromupdatesession = false; });

my activity inherited listfragment

public class sessionactivity : global::android.support.v4.app.listfragment


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