发布：2021/2/22 17:41:17作者：管理员 来源：本站 浏览次数：1994
想要实现将PDF文档转换为图片,需要引用O2S.Components.PDFRender4NET.Dll
O2S.Components.PDFRender4NET.Dll下载：
O2S.Components.PDFRender4NET.rar
代码实现：
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using System;
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using System.Collections.Generic;
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using System.Drawing;
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using System.Drawing.Imaging;
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using System.IO;
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using System.Linq;
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using System.Text;
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using O2S.Components.PDFRender4NET;
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namespace XHS.Tools
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{
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public class PdfHelper
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{
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public enum Definition
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{
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One = 1, Two = 2, Three = 3, Four = 4, Five = 5, Six = 6, Seven = 7, Eight = 8, Nine = 9, Ten = 10
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}
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/// <summary>
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/// 将PDF文档转换为图片的方法
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/// </summary>
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/// <param name="pdfInputPath">PDF文件路径</param>
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/// <param name="imageOutputPath">图片输出路径</param>
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/// <param name="imageName">生成图片的名字</param>
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/// <param name="startPageNum">从PDF文档的第几页开始转换</param>
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/// <param name="endPageNum">从PDF文档的第几页开始停止转换</param>
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/// <param name="imageFormat">设置所需图片格式</param>
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/// <param name="definition">设置图片的清晰度，数字越大越清晰</param>
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public static void ConvertPdfToImage(string pdfInputPath, string imageOutputPath,
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string imageName, int startPageNum, int endPageNum, ImageFormat imageFormat, Definition definition)
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{
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PDFFile pdfFile = PDFFile.Open(pdfInputPath);
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if (!Directory.Exists(imageOutputPath))
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{
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Directory.CreateDirectory(imageOutputPath);
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}
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if (startPageNum <= 0)
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{
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startPageNum = 1;
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}
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if (endPageNum > pdfFile.PageCount)
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{
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endPageNum = pdfFile.PageCount;
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}
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if (startPageNum > endPageNum)
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{
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int tempPageNum = startPageNum;
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startPageNum = endPageNum;
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endPageNum = startPageNum;
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}
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for (int i = startPageNum; i <= endPageNum; i++)
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{
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Bitmap pageImage = pdfFile.GetPageImage(i - 1, 56 * (int)definition);
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pageImage.Save(imageOutputPath + imageName + i.ToString() + "." + imageFormat.ToString(), imageFormat);
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pageImage.Dispose();
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}
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pdfFile.Dispose();
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}
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}
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}
