Application app = new Application();
            Document obj = app.Documents.Open("word路径");
 byte[] data = (byte[])obj.Content.EnhMetaFileBits;
            using (MemoryStream ms = new MemoryStream(data))
            {
                using (Image img = Image.FromStream(ms))
                {
                    int w = img.Width;
                    int h = img.Height;
                    using (var target = new Bitmap(w,h))
                    using (var g = Graphics.FromImage(target))
                    {
                        g.DrawImage(img, 0, 0, w,h);
                        target.Save(“保存路径”,System.Drawing.Imaging.ImageFormat.Gif);
                    }
                }
            }