public static void GetImagesFromDocument(Document familyDoc, string targetDirectory)
        {
            //IL_000f: Unknown result type (might be due to invalid IL or missing references)
            //IL_0014: Unknown result type (might be due to invalid IL or missing references)
            //IL_0015: Unknown result type (might be due to invalid IL or missing references)
            //IL_001c: Unknown result type (might be due to invalid IL or missing references)
            //IL_0023: Unknown result type (might be due to invalid IL or missing references)
            //IL_002a: Unknown result type (might be due to invalid IL or missing references)
            //IL_0031: Unknown result type (might be due to invalid IL or missing references)
            //IL_0038: Unknown result type (might be due to invalid IL or missing references)
            //IL_003f: Unknown result type (might be due to invalid IL or missing references)
            //IL_004a: Unknown result type (might be due to invalid IL or missing references)
            //IL_0051: Unknown result type (might be due to invalid IL or missing references)
            //IL_0052: Unknown result type (might be due to invalid IL or missing references)
            //IL_0057: Unknown result type (might be due to invalid IL or missing references)
            //IL_0058: Unknown result type (might be due to invalid IL or missing references)
            //IL_0063: Unknown result type (might be due to invalid IL or missing references)
            //IL_0080: Unknown result type (might be due to invalid IL or missing references)
            //IL_0085: Unknown result type (might be due to invalid IL or missing references)
            //IL_0087: Unknown result type (might be due to invalid IL or missing references)
            //IL_0089: Expected O, but got Unknown
            //IL_008e: Unknown result type (might be due to invalid IL or missing references)
            //IL_0090: Unknown result type (might be due to invalid IL or missing references)
            //IL_0094: Unknown result type (might be due to invalid IL or missing references)
            //IL_009d: Unknown result type (might be due to invalid IL or missing references)
            //IL_00a7: Unknown result type (might be due to invalid IL or missing references)
            //IL_00a9: Unknown result type (might be due to invalid IL or missing references)
            //IL_00ca: Unknown result type (might be due to invalid IL or missing references)
            //IL_0118: Unknown result type (might be due to invalid IL or missing references)
            //IL_0119: Unknown result type (might be due to invalid IL or missing references)
            if (!Directory.Exists(targetDirectory))
            {
                Util_Helper.CreateDirectory(targetDirectory);
            }
            ImageExportOptions val = new ImageExportOptions();

            val.set_ExportRange(2);
            val.set_FilePath(targetDirectory);
            val.set_HLRandWFViewsFileType(2);
            val.set_ImageResolution(0);
            val.set_ShadowViewsFileType(2);
            val.set_ZoomType(0);
            val.set_PixelSize(512);
            val.set_FitDirection(0);
            FilteredElementCollector val2  = new FilteredElementCollector(familyDoc);
            IList <Element>          list  = val2.OfClass(typeof(View)).ToElements();
            IList <ElementId>        list2 = new List <ElementId>();

            foreach (Element item in list)
            {
                View val3 = item as View;
                if ((int)val3 != 0 && !val3.get_IsTemplate() && val3.get_CanBePrinted())
                {
                    list2.Add(val3.get_Id());
                }
            }
            val.SetViewsAndSheets(list2);
            if (Directory.Exists(targetDirectory))
            {
                string[] files = Directory.GetFiles(targetDirectory, "*.jpg");
                foreach (string path in files)
                {
                    File.Delete(path);
                }
            }
            if (ImageExportOptions.IsValidFileName(targetDirectory) && list2.Count > 0)
            {
                try
                {
                    familyDoc.ExportImage(val);
                }
                catch (Exception ex)
                {
                    throw ex;
                }
            }
        }