CODEWITHSUNDEEP
c#asynchronouswindows-phone-8.1win-universal-app
Jerin
Jerin

Reputation: 4269

Windows Phone 8.1 Showing progress view until async/await task finishes

I have two tasks which download an mp3 from web address inside local storage and returns timeSpan. 

 public async Task<TimeSpan> filedownload_Ignition_Outside()
            {
                Uri sourceIgnition_Outside = new Uri(TemporaryAddress.download_playCarSound+"Ignition_Outside");
//download and store file

                return duration_Ignition_Outside;
            }






public async Task<TimeSpan> filedownload_Idle_Outside()
    {
        Uri sourceIdle_Outside = new Uri(TemporaryAddress.download_playCarSound +"Idle_Outside");
        StorageFile destinationFileIdle_Outside;
       //download and store file

        return duration_Idle_Outside;

    }

Now I need to show an indeterminate progressbar in UI while downloading starts till it ends But dont know how to find the task completed?

On my NavigatedTo function I have set it as async and am calling await downloadFile();

Now inside my downloadFile() 

 public async Task<TimeSpan> downloadFiles()
            {
                //ProgressShow



              var temp= await filedownload_Ignition_Outside();



                //if (filedownload_Ignition_Outside().IsCompleted)
                //{
                //    //progressStop
                //}

return temp;

    }

But its not executing the stop statement as it waits asynchronously how can I get the event where both task gets finished?
Can I call both tasks inside my downloadFiles() method and still able to get an event for both task completion.

Upvotes: 3

Views: 413

Answers (1)

Null Pointer
Null Pointer

Reputation: 9309

Try something similar to the code given below in your OnNavigatedTo event.

          ShowProgress=true;
           downloadFiles().ContinueWith((sender) =>
            {
                this.Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
                   ShowProgress=false;
                );
            });

You need to run the ShowProgress=False; in UI thread

Upvotes: 1

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