NPOI.XSSF.UserModel.XSSFWorkbook.GetAllPictures C# (CSharp) Метод

        public IList GetAllPictures()
        {
            if (pictures == null)
            {
                List<PackagePart> mediaParts = Package.GetPartsByName(new Regex("/xl/media/.*?"));
                pictures = new List<XSSFPictureData>(mediaParts.Count);
                foreach (PackagePart part in mediaParts)
                {
                    pictures.Add(new XSSFPictureData(part, null));
                }
            }
            return pictures;
        }

        public void TestRead()
        {
            XSSFWorkbook wb       = XSSFTestDataSamples.OpenSampleWorkbook("WithDrawing.xlsx");
            IList        pictures = wb.GetAllPictures();

            //wb.GetAllPictures() should return the same instance across multiple calls
            Assert.AreSame(pictures, wb.GetAllPictures());

            Assert.AreEqual(5, pictures.Count);
            String[] ext      = { "jpeg", "emf", "png", "emf", "wmf" };
            String[] mimetype = { "image/jpeg", "image/x-emf", "image/png", "image/x-emf", "image/x-wmf" };
            for (int i = 0; i < pictures.Count; i++)
            {
                Assert.AreEqual(ext[i], ((XSSFPictureData)pictures[i]).SuggestFileExtension());
                Assert.AreEqual(mimetype[i], ((XSSFPictureData)pictures[i]).MimeType);
            }

            int num = pictures.Count;

            byte[] pictureData = { 0xA, 0xB, 0XC, 0xD, 0xE, 0xF };

            int idx = wb.AddPicture(pictureData, PictureType.JPEG);

            Assert.AreEqual(num + 1, pictures.Count);
            //idx is 0-based index in the #pictures array
            Assert.AreEqual(pictures.Count - 1, idx);
            XSSFPictureData pict = (XSSFPictureData)pictures[idx];

            Assert.AreEqual("jpeg", pict.SuggestFileExtension());
            Assert.IsTrue(Arrays.Equals(pictureData, pict.Data));
        }