using System.Drawing.Imaging; using System.IO; using PDFLibNet;namespace pdf2image.PDFLibNet {class Program{public enum Definition{One = 1, Two = 2, Three = 3, Four = 4, Five = 5, Six = 6, Seven = 7, Eight = 8, Nine = 9, Ten = 10}/// <summary>/// 將PDF文檔轉(zhuǎn)換為圖片的方法/// </summary>/// <param name="pdfInputPath">PDF文件路徑</param>/// <param name="imageOutputPath">圖片輸出路徑</param>/// <param name="imageName">生成圖片的名字</param>/// <param name="startPageNum">從PDF文檔的第幾頁(yè)開(kāi)始轉(zhuǎn)換</param>/// <param name="endPageNum">從PDF文檔的第幾頁(yè)開(kāi)始停止轉(zhuǎn)換</param>/// <param name="imageFormat">設(shè)置所需圖片格式</param>/// <param name="definition">設(shè)置圖片的清晰度，數(shù)字越大越清晰</param>public static void ConvertPDF2Image(string pdfInputPath, string imageOutputPath,string imageName, int startPageNum, int endPageNum, ImageFormat imageFormat, Definition definition){PDFWrapper pdfWrapper = new PDFWrapper();pdfWrapper.LoadPDF(pdfInputPath);if (!System.IO.Directory.Exists(imageOutputPath)){Directory.CreateDirectory(imageOutputPath);}// validate pageNumif (startPageNum <= 0){startPageNum = 1;}if (endPageNum > pdfWrapper.PageCount){endPageNum = pdfWrapper.PageCount;}if (startPageNum > endPageNum){int tempPageNum = startPageNum;startPageNum = endPageNum;endPageNum = startPageNum;}// start to convert each pagefor (int i = startPageNum; i <= endPageNum; i++){pdfWrapper.ExportJpg(imageOutputPath + imageName + i.ToString() + ".jpg", i, i, 180, 80);//這里可以設(shè)置輸出圖片的頁(yè)數(shù)、大小和圖片質(zhì)量if (pdfWrapper.IsJpgBusy) { System.Threading.Thread.Sleep(100); }}pdfWrapper.Dispose();}public static void Main(string[] args){ConvertPDF2Image("E:\\2017.pdf", "E:\\", "test", 1, 5, ImageFormat.Jpeg, Definition.One);}} }

利用的是第三方PDFLibNet.dll?

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