.NET 以O2S方式 PDF 转图片

依赖下载

O2S.Components.PDFRender4NET.Win

System.Drawing.Common

目录结构

关键代码

PDFTranImgHelp

using O2S.Components.PDFRender4NET;

using System;

using System.Collections.Generic;

using System.Drawing;

using System.Drawing.Imaging;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

namespace PDFTo

{

    public enum Definition

    {

        One = 1, Two = 2, Three = 3, Four = 4, Five = 5, Six = 6, Seven = 7, Eight = 8, Nine = 9, Ten = 10

    }

    public class PDFTranImgHelp

    {

        ///

        /// 将PDF文档转换为图片的方法

        ///

        /// PDF文件路径

        /// 图片输出路径

        /// 生成图片的名字

        /// 从PDF文档的第几页开始转换

        /// 从PDF文档的第几页开始停止转换

        /// 设置所需图片格式

        /// 设置图片的清晰度，数字越大越清晰

        public static void ConvertPDF2Image(

                string pdfInputPath,

                string imageOutputPath,

                string imageName,

                int startPageNum,

                int endPageNum,

                ImageFormat imageFormat,

                Definition definition)

        {

            PDFFile pdfFile = PDFFile.Open(pdfInputPath);

            if (!Directory.Exists(imageOutputPath))

            {

                Directory.CreateDirectory(imageOutputPath);

            }

            // validate pageNum

            if (startPageNum  pdfFile.PageCount)

            {

                endPageNum = pdfFile.PageCount;

            }

            if (startPageNum > endPageNum)

            {

                int tempPageNum = startPageNum;

                startPageNum = endPageNum;

                endPageNum = startPageNum;

            }

            // start to convert each page

            for (int i = startPageNum; i