C#给PDF文件添加水印

概述本文实例为大家分享了C#添加PDF文件水印的具体代码，供大家参考，具体内容如下

本文实例为大家分享了C#添加pdf文件水印的具体代码，供大家参考，具体内容如下

using System;using System.Collections.Generic;using System.linq;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;using iTextSharp.text.HTML.simpleparser;using iTextSharp.text.pdf;using iTextSharp.text;using System.IO;using System.Web.UI.HTMLControls;using System.Drawing;//itextsharp.dll version:5.1.10protected voID button1_Click(object sender,EventArgs e)   {    string source =@"D:\My.Sample\C#NET\Exoport2pdf\Web2\Chap1011.pdf"; //模板路径    string output = @"D:\My.Sample\C#NET\Exoport2pdf\Web2\Chap1012.pdf"; //导出水印背景后的pdf    string watermark = @"D:\My.Sample\C#NET\Exoport2pdf\Web2\gp0.jpg";  // 水印图片    bool isSurrcess = pdfWatermark(source,output,watermark,10,10);       }  public bool pdfWatermark(string inputfilepath,string outputfilepath,string ModelPicname,float top,float left)  {    //throw new NotImplementedException();    pdfReader pdfReader = null;    pdfstamper pdfstamper = null;    try    {      pdfReader = new pdfReader(inputfilepath);      int numberOfPages = pdfReader.NumberOfPages;      iTextSharp.text.Rectangle psize = pdfReader.GetPageSize(1);      float wIDth = psize.WIDth;      float height = psize.Height;      pdfstamper = new pdfstamper(pdfReader,new fileStream(outputfilepath,fileMode.Create));      PdfcontentByte waterMarkContent;      iTextSharp.text.Image image = iTextSharp.text.Image.GetInstance(ModelPicname);      image.GrayFill = 20;//透明度，灰色填充      //image.Rotation//旋转      //image.Rotationdegrees//旋转角度      //水印的位置       if (left < 0)      {        left = wIDth - image.WIDth + left;      }      image.Set@R_403_4613@position(left,(height - image.Height) - top);      //每一页加水印,也可以设置某一页加水印       for (int i = 1; i <= numberOfPages; i++)      {        waterMarkContent = pdfstamper.GetUnderContent(i);        waterMarkContent.AddImage(image);      }      //strMsg = "success";      return true;    }    catch (Exception ex)    {       ex.Message.Trim();      return false;    }    finally    {      if (pdfstamper != null)        pdfstamper.Close();      if (pdfReader != null)        pdfReader.Close();    }

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持编程小技巧。

总结

以上是内存溢出为你收集整理的C#给PDF文件添加水印全部内容，希望文章能够帮你解决C#给PDF文件添加水印所遇到的程序开发问题。

如果觉得内存溢出网站内容还不错，欢迎将内存溢出网站推荐给程序员好友。