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C#生成PDF文件流

2021-12-30 13:57恝置 C#

这篇文章主要为大家详细介绍了C#生成PDF文件流的相关资料，具有一定的参考价值，感兴趣的小伙伴们可以参考一下

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

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									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;
}