ArcGISRuntime.WPF.Samples.AuthorMap.AuthorMap.SaveMapClicked C# (CSharp) Method

        private async void SaveMapClicked(object sender, RoutedEventArgs e)
        {
            try
            {
                // Show the progress bar so the user knows work is happening
                SaveProgressBar.Visibility = Visibility.Visible;

                // Get the current map
                var myMap = MyMapView.Map;

                // Apply the current extent as the map's initial extent
                myMap.InitialViewpoint = MyMapView.GetCurrentViewpoint(ViewpointType.BoundingGeometry);

                // See if the map has already been saved (has an associated portal item)
                if (myMap.Item == null)
                {
                    // Get information for the new portal item
                    var title = TitleTextBox.Text;
                    var description = DescriptionTextBox.Text;
                    var tags = TagsTextBox.Text.Split(',');

                    // Make sure all required info was entered
                    if (string.IsNullOrEmpty(title) || string.IsNullOrEmpty(description) || tags.Length == 0)
                    {
                        throw new Exception("Please enter a title, description, and some tags to describe the map.");
                    }

                    // Call a function to save the map as a new portal item
                    await SaveNewMapAsync(MyMapView.Map, title, description, tags);

                    // Report a successful save
                    MessageBox.Show("Saved '" + title + "' to ArcGIS Online!", "Map Saved");
                }
                else
                {
                    // This is not the initial save, call SaveAsync to save changes to the existing portal item
                    await myMap.SaveAsync();

                    // Report update was successful
                    MessageBox.Show("Saved changes to '" + myMap.Item.Title + "'", "Updates Saved");
                }

                // Update the portal item thumbnail with the current map image
                try
                {
                    // Export the current map view
                    var mapImage = await Esri.ArcGISRuntime.UI.RuntimeImageExtensions.ToImageSourceAsync(await MyMapView.ExportImageAsync());

                    // Call a function that writes a temporary jpeg file of the map
                    var imagePath = await WriteTempThumbnailImageAsync(mapImage);

                    // Call a function to update the portal item's thumbnail with the image
                    UpdatePortalItemThumbnailAsync(imagePath);
                }
                catch 
                {
                    // Throw an exception to let the user know the thumbnail was not saved (the map item was)
                    throw new Exception("Thumbnail was not updated.");
                }
            }
            catch (Exception ex)
            {
                // Report error message
                MessageBox.Show("Error saving map to ArcGIS Online: " + ex.Message);
            }
            finally
            {
                // Hide the progress bar
                SaveProgressBar.Visibility = Visibility.Hidden;
            }            
        }
        #endregion