WPF解析Word为图片

偶遇需要解析Word为单张图，此做

http://git.oschina.net/jiailiuyan/OfficeDecoder

using System;

using System.Collections.Generic;

using System.Drawing;

using System.Drawing.Text;

using System.IO;

using System.Linq;

using System.Reflection;

using System.Text;

using System.Threading.Tasks;

using Aspose.Words.Rendering;

namespace Helpers

{

    public static class WordHelper

    {

        /// <summary> 获取 Word 每一页的高度 此项获得整个页面</summary>

        /// <param name="pageinfo"></param>

        /// <returns></returns>

        private static int GetWordHeight(PageInfo pageinfo)

        {

            var flag = BindingFlags.NonPublic | BindingFlags.Instance;

            // 经过反编译看到 Word 中 PageInfo 的高度属性被混淆为 Int32_1

            var pageheight = pageinfo.GetType().GetProperty("Int32_1", flag);

            if (pageheight != null)

            {

                var height = pageheight.GetValue(pageinfo, null);

                if (height != null)

                {

                    return (int)height;

                }

            }

            return (int)pageinfo.WidthInPoints;

        }

        /// <summary> 获取 Word 每一页的宽度 此项获得整个页面 </summary>

        /// <param name="pageinfo"></param>

        /// <returns></returns>

        private static int GetWordWidth(PageInfo pageinfo)

        {

            var flag = BindingFlags.NonPublic | BindingFlags.Instance;

            // 经过反编译看到 Word 中 PageInfo 的宽度属性被混淆为 Int32_0

            var pagewidth = pageinfo.GetType().GetProperty("Int32_0", flag);

            if (pagewidth != null)

            {

                var width = pagewidth.GetValue(pageinfo, null);

                if (width != null)

                {

                    return (int)width;

                }

            }

            return (int)pageinfo.WidthInPoints;

        }

        /// <summary> 转换 Word 的每一页为图片 </summary>

        /// <param name="wordfile"></param>

        /// <param name="savedirectory"></param>

        /// <returns></returns>

        public static List<string> ConvertToImages(string wordfile, string savedirectory = "")

        {

            // 返回的图片绝对路径集合

            List<string> images = new List<string>();

            // 获取 Word 文件名称

            var wordname = System.IO.Path.GetFileNameWithoutExtension(wordfile);

            // 如果指定了保存路径，则使用传入的路径，否则在 Word 文件的同级创建同名文件夹当作保存路径

            savedirectory = string.IsNullOrWhiteSpace(savedirectory) ? System.IO.Path.GetDirectoryName(wordfile) : savedirectory;

            savedirectory = System.IO.Path.Combine(savedirectory, wordname);

            // 防止保存的路径不存在因此创建保存文件夹

            Directory.CreateDirectory(savedirectory);

            var doc = new Aspose.Words.Document(wordfile);

            int count = doc.PageCount;

            // Aspose.Word 的单页获取索引从 0 开始

            for (int i = ; i < count; i++)

            {

                var imagefile = System.IO.Path.Combine(savedirectory, i + ".jpg");

                PageInfo pageInfo = doc.GetPageInfo(i);

                var size = pageInfo.GetSizeInPixels(, );

                int width = size.Width;

                int height = size.Height;

                using (var img = new Bitmap(width, height))

                {

                    using (var gr = Graphics.FromImage(img))

                    {

                        gr.TextRenderingHint = TextRenderingHint.AntiAliasGridFit;

                        gr.FillRectangle(System.Drawing.Brushes.White, , , width, height);

                        doc.RenderToSize(i, gr, , , width, height);

                    }

                    // 生成图像

                    img.Save(imagefile);

                    images.Add(imagefile);

                }

            }

            return images;

        }

        /// <summary> 把 Word 转换为 Pdf </summary>

        /// <param name="wordfile"></param>

        /// <param name="pdffile"></param>

        /// <returns></returns>

        public static bool ConvertWordToPdf(string wordfile, string pdffile)

        {

            try

            {

                var doc = new Aspose.Words.Document(wordfile);

                doc.Save(pdffile, Aspose.Words.SaveFormat.Pdf);

                return true;

            }

            catch { }

            return false;

        }

    }

}