How to show error message In Async Function

Question

Originally, I used private async void for the Control GridView's Item Click. When I changed it to private async Task

I got error Msg :

ItemsGridView_ItemClick(object, Windows.UI.Xaml.Controls.ItemClickEventArgs)' has the wrong return type

What I wanted:
- to show whatever error message in Try-catch in MessageDialog and exit

 

 private async Task ItemsGridView_ItemClick(object sender, ItemClickEventArgs e)
 {

       bool ShowError = false;
       System.Exception MyException = new Exception();

       try
      {

         -- call Async Method --

       }
     catch (Exception ex)
       {
           ShowError = true;
           MyException = ex;
        }
       if (ShowError)
       {
           var MyMessageBox = new Windows.UI.Popups.MessageDialog(MyException.Message,"Selecting Item");
           await MyMessageBox.ShowAsync();
       }

}