ARUP.IssueTracker.Revit.AddIssueRevit.updateImage C# (CSharp) Method

        private void updateImage()
        {
            try
            {
                SnapshotImg.Source = null;
                ImageExportOptions options = new ImageExportOptions();
                options.FilePath = snapshot;
                //   options.
                options.HLRandWFViewsFileType = ImageFileType.PNG;
                options.ShadowViewsFileType = ImageFileType.PNG;
                options.ExportRange = ExportRange.VisibleRegionOfCurrentView;
                options.ZoomType = ZoomFitType.FitToPage;
                options.ImageResolution = ImageResolution.DPI_72;
                options.PixelSize = 1000;
                doc.ExportImage(options);
                BitmapImage source = new BitmapImage();
                source.BeginInit();
                source.UriSource = new Uri(snapshot);
                source.CacheOption = BitmapCacheOption.OnLoad;
                source.CreateOptions = BitmapCreateOptions.IgnoreImageCache;
                source.EndInit();
                SnapshotImg.Source = source;

                PathLabel.Content = "none";
            }
            catch (System.Exception ex1)
            {
                TaskDialog.Show("Error!", "exception: " + ex1);
            }

        }