Progress ring not showed

Question

Hello,

I have problem with ProgressRing it doesnt show when I want to show it.

My XAML:

                <Button x:Name="btnRefreshData" 
                        Click="BtnRefreshData_Click"
                        ></Button>


                <ProgressRing x:Name="prrgLoadingData"></ProgressRing>

My code behind

    private async void BtnRefreshData_Click(object sender, RoutedEventArgs e)
    {
        RefreshData();
    }


    private async void RefreshData()
    {

        prrgLoadingData.IsActive = true;
        prrgLoadingData.Visibility = Visibility.Visible;

            await LoadReportDataFromSQLDB(); //it loads data from sql db

        prrgLoadingData.IsActive = false;
        prrgLoadingData.Visibility = Visibility.Collapsed;

}

I read in net that should be done in another way, but I dont know how to do it in my case.
How to do that in proper way?

Answer 1

Hello,

Welcome to Microsoft Q&A!

After testing, add a Task.Delay() method will help to solve the issue.

The code looks like this:

             prrgLoadingData.IsActive = true;  
             prrgLoadingData.Visibility = Visibility.Visible;  
      
             await Task.Delay(1);  
  
             await LoadReportDataFromSQLDB(); //it loads data from sql db  
      
             prrgLoadingData.IsActive = false;  
             prrgLoadingData.Visibility = Visibility.Collapsed;  

If you have any other questions, please let us know.

Thank you.

---

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Answer 2

This test based on your code works for me : test with a 5 seconds Task =>

 <ProgressRing x:Name="prrgLoadingData" Height="40" Width="40">              
 </ProgressRing>  

Test code :

    private async void BtnRefreshData_Click(object sender, RoutedEventArgs e)  
    {  
        RefreshData();  
    }  

    private async void RefreshData()  
    {  
        prrgLoadingData.IsActive = true;  
        prrgLoadingData.Visibility = Visibility.Visible;  
        await MyTask();  
    }  

    async System.Threading.Tasks.Task MyTask()  
    {  
        await Windows.ApplicationModel.Core.CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, async () =>  
        {  
            await System.Threading.Tasks.Task.Delay(5000);  
            prrgLoadingData.IsActive = false;  
            prrgLoadingData.Visibility = Visibility.Collapsed;  
            MessageDialog dialog = new MessageDialog("Task finished !", "Information");                 
            _ = dialog.ShowAsync();                 
        });  
    }