C#生成PDF文件流

本文实例为大家分享了C#生成PDF文件流的具体代码，供大家参考，具体内容如下

1、设置字体

static BaseFont FontBase = BaseFont.CreateFont("C:\\WINDOWS\\FONTS\\STSONG.TTF", BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
   static iTextSharp.text.Font bodyFont = new iTextSharp.text.Font(FontBase, 12);
   static iTextSharp.text.Font titleFont = new iTextSharp.text.Font(FontBase, 18);
   static iTextSharp.text.Font paragraphFont = new iTextSharp.text.Font(FontBase, 15);
   static iTextSharp.text.Font linkFont = new iTextSharp.text.Font(FontBase, 12, Font.UNDERLINE, BaseColor.BLUE);

2.生成PDF文件流返回byte数组

public byte[] DocCreate(System.Drawing.Image image, List<TreeNodes> list)
   {
     MemoryStream file = new MemoryStream();

string fileName = string.Empty;
     Rectangle page = PageSize.A4;
     float y = page.Height;
     Document document = new Document(page, 15, 15, 30, 30);
     float docWidth = page.Width - 15 * 2;
     float docHeight = page.Height - document.BottomMargin - document.TopMargin;
     PdfWriter writer = PdfWriter.GetInstance(document, file);
     writer.CloseStream = false;
     writer.Open();
     PdfContentByte cb = writer.DirectContent;
     document.Open();
     //标题
     Paragraph title = new Paragraph(new Chunk("标题", titleFont));
     title.Alignment = Element.ALIGN_CENTER;
     document.Add(title);
     //图片
     iTextSharp.text.Image img = iTextSharp.text.Image.GetInstance(image, ImageFormat.Png);
     float widthSzie = (page.Width - 30) / img.Width;
     if (widthSzie < 1)
     {
       img.ScalePercent(widthSzie * 100);
     }
     document.Add(img);
     //文献出处
     Paragraph p2 = new Paragraph(new Chunk("出处", paragraphFont));
     p2.IndentationLeft = indentationLeft;
     document.Add(p2);
     InitData(list);//初始化业务数据
     CreateSteps(list, document, list.FirstOrDefault(it => it.PID == 0));//添加业务数据
     ////添加印章
     //iTextSharp.text.Image whyz = iTextSharp.text.Image.GetInstance(whyzPath);
     //whyz.ScalePercent(50);
     //whyz.PaddingTop = 100;
     //whyz.Alignment = Element.ALIGN_RIGHT;
     //document.Add(whyz);
     //添加日期
     Paragraph createtime = new Paragraph(new Chunk(DateTime.Now.ToLongDateString().ToString(), bodyFont));
     createtime.Alignment = Element.ALIGN_RIGHT;
     //createtime.SpacingBefore = -80;
     createtime.PaddingTop = 200;

document.Add(createtime);

document.Close();
     file.Position = 0;
     MemoryStream newfile = SetWaterMark(file, "水印内容", docWidth, docHeight);//添加水印，见另外一篇博客
     newfile.Position = 0;//重置流指针位置
     byte[] bytes = new byte[newfile.Length];
     newfile.Read(bytes, 0, bytes.Length);
     return bytes;
   }