c# 多张图片合成pdf

使用方法：

1.找到exe所在的路径url，解决方案名称为ImagesToPDF

在命令行中输入 url/ImagesToPDF.exe 导出PDF路径 图片1路径 图片2路径 ...

2.

右键点击【项目】--》【属性】，弹出配置界面。选择【调试】--》【启动选项】--》【命令行参数】文本框中输入任意的参数，多个之间用空格分隔，按F5可直接看到结果

 

 

 3.通过在程序的快捷方式中增加参数【推荐】

程序编译后，创建快捷方式程序。右键点击【ImagesToPDF.exe】--》【创建快捷方式】

右键点击【ImagesToPDF.exe 快捷方式】--》【属性】--》【快捷方式】--》【目标】，在文本框的最后输入任意参数，多个之间用空格分开

 

 

 双击双击【ImagesToPDF.exe 快捷方式】

 

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static void Main(string[] args)         {             var outputurl = "";             List<string> filePath = new List<string>();             if (args != null)             {                 Console.WriteLine("参数长度" + args.Length);                 for (int i = 0; i < args.Length; i++)                 {                     Console.Write("第" + (i + 1) + "个参数是");                     Console.WriteLine(args[i]);                     if (i == 0)                     {                         string dire = args[i].Substring(0, args[i].LastIndexOf("/"));                         if (!Directory.Exists(dire))                         {                             Directory.CreateDirectory(dire);                         }                         outputurl = args[i];                     }                     else                     {                         filePath.Add(args[i]);                     }                   }               }             Console.ReadLine();             ToPDF(outputurl, filePath);         }           public static void ToPDF(string outputurl, List<string> filePath)         {             float[] xy = new float[2];             using (FileStream fs = new FileStream(filePath[0], FileMode.Open))             {                 System.Drawing.Image img = System.Drawing.Image.FromStream(fs);                   int w = img.Width;                 int h = img.Height;                 float w_dpi = img.HorizontalResolution;                 float h_dpi = img.VerticalResolution;                 xy[0] = (float)(w * 25.4 / w_dpi * 2.83462677);                 xy[1] = (float)(h * 25.4 / h_dpi * 2.83462677);             }             iTextSharp.text.Document document = new iTextSharp.text.Document(new iTextSharp.text.Rectangle(0, 0, xy[0], xy[1]), 0, 0, 0, 0);             using (FileStream fs = new FileStream(outputurl, FileMode.Create))             {                 iTextSharp.text.pdf.PdfWriter.GetInstance(document, fs);                 document.Open();                 for (int i = 0; i < filePath.Count; i++)                 {                     string imgPath = filePath[i];                     using (FileStream imgFs = new FileStream(imgPath, FileMode.Open))                     {                         iTextSharp.text.Image img = iTextSharp.text.Image.GetInstance(imgFs);                         img.ScaleAbsolute(xy[0], xy[1]);                         document.NewPage();                         document.Add(img);                         imgFs.Close();                     }                 }                 document.Dispose();             }         }