task - Show RadBusyIndicator during Frame Navigation WPF -

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for our application, need display busy indicator during navigation since controls taking time load. long running operation create separate task , trigger busy indicator in ui thread in case couldn't that.

once busy indicator started spin, got disturbed frame.source or frame.navigate executes in ui thread. busy indictor hidden away .

the below piece of code have used navigation. executed separate task . 

public virtual void navigateto(string pagekey, object parameter)         {                   frame frame = null;                 action actiontoexecuteonuicontext = () =>                     {                          frame = getdescendantfromname(application.current.mainwindow, "contentframe") frame;                         if (frame != null)                         {                              frame.loadcompleted -= frame_loadcompleted;                             frame.loadcompleted += frame_loadcompleted;                                  frame.source = _pagesbykey[pagekey];                                 frame.datacontext = parameter;                            }                       };                  application.current.dispatcher.begininvoke(actiontoexecuteonuicontext, dispatcherpriority.normal);                }          }

any way fix or alternative

wpf & radbusyindicator & .net 4.5

in order display busy indicater have use background thread, because navigation needs ui thread.

i suggest use :

    protected async void navigation(string pagekey, object parameter)     {          await navigateto(pagekey,parameter).continuewith((t) =>         {// ui stuff             dispatcher.currentdispatcher.invokeasync(delegate             {                 isbusy = false;             });          },             //sync ui thread         taskscheduler.fromcurrentsynchronizationcontext());     }      /// <summary>     /// method needs async perform async binding     /// </summary>     /// <param name="value"></param>     /// <returns></returns>     private async task navigateto(string pagekey, object parameter)     {         //your async method     }

where isbusy value of busyindicator. have set true, on navigation started.

hope post you@!


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