1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Windows.Forms;
5 using O2S.Components.PDFRender4NET;
6 using System.Drawing;
7 using System.Drawing.Imaging;
8 using System.IO;

 1 namespace pdf2image.O2S.Components.PDFRender4NET
 2 {
 3     public
 
 static class Program
 4     {
 5         public enum Definition
 6         {
 7             One = 1, Two = 2, Three = 3, Four = 4, Five = 5, Six = 6, Seven = 7, Eight = 8, Nine = 9, Ten = 10
 8         }
 9 
10         
11         public static void ConvertPDF2Image(string pdfInputPath, string imageOutputPath,
 
12             string imageName, int startPageNum, int endPageNum, ImageFormat imageFormat, Definition definition)
13         {
14             PDFFile pdfFile = PDFFile.Open(pdfInputPath);
15 
16             if (!Directory.Exists(imageOutputPath))
17             {
18                 Directory.CreateDirectory(imageOutputPath);
 
19             }
20 
21             // validate pageNum
22             if (startPageNum <= 0)
23             {
24                 startPageNum = 1;
25             }
26 
27             if (endPageNum > pdfFile.PageCount)
28             {
29                 endPageNum = pdfFile.PageCount;
30             }
31 
32             if (startPageNum > endPageNum)
33             {
34                 int tempPageNum = startPageNum;
35                 startPageNum = endPageNum;
36                 endPageNum = startPageNum;
37             }
38 
39             // start to convert each page
40             for (int i = startPageNum; i <= endPageNum; i++)
41             {
42                 Bitmap pageImage = pdfFile.GetPageImage(i - 1, 56 * (int)definition);
43                 pageImage.Save(imageOutputPath + imageName + i.ToString() + "." + imageFormat.ToString(), imageFormat);
44                 pageImage.Dispose();
45             }
46 
47             pdfFile.Dispose();
48         }
49 
50         public static void Main(string[] args)
51         {
52             ConvertPDF2Image("C:\\FileServer\\test.pdf", "C:\\FileServer\\", "test", 1, 5, ImageFormat.Jpeg, Definition.One);
53         }
54 
55     }
56 }

參考資料：

CSDN

https://blog.csdn.net/lqw_6/article/details/77990477

https://download.csdn.net/download/shi0090/4066107