C#给PDF文件添加水印
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
usingSystem; usingSystem.Collections.Generic; usingSystem.Linq; usingSystem.Web; usingSystem.Web.UI; usingSystem.Web.UI.WebControls; usingiTextSharp.text.html.simpleparser; usingiTextSharp.text.pdf; usingiTextSharp.text; usingSystem.IO; usingSystem.Web.UI.HtmlControls; usingSystem.Drawing; //itextsharp.dllversion:5.1.10 protectedvoidButton1_Click(objectsender,EventArgse) { stringsource=@"D:\My.Sample\C#NET\Exoport2PDF\Web2\Chap1011.pdf";//模板路径 stringoutput=@"D:\My.Sample\C#NET\Exoport2PDF\Web2\Chap1012.pdf";//导出水印背景后的PDF stringwatermark=@"D:\My.Sample\C#NET\Exoport2PDF\Web2\gp0.jpg";//水印图片 boolisSurrcess=PDFWatermark(source,output,watermark,10,10); } publicboolPDFWatermark(stringinputfilepath,stringoutputfilepath,stringModelPicName,floattop,floatleft) { //thrownewNotImplementedException(); PdfReaderpdfReader=null; PdfStamperpdfStamper=null; try { pdfReader=newPdfReader(inputfilepath); intnumberOfPages=pdfReader.NumberOfPages; iTextSharp.text.Rectanglepsize=pdfReader.GetPageSize(1); floatwidth=psize.Width; floatheight=psize.Height; pdfStamper=newPdfStamper(pdfReader,newFileStream(outputfilepath,FileMode.Create)); PdfContentBytewaterMarkContent; iTextSharp.text.Imageimage=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.SetAbsolutePosition(left,(height-image.Height)-top); //每一页加水印,也可以设置某一页加水印 for(inti=1;i<=numberOfPages;i++) { waterMarkContent=pdfStamper.GetUnderContent(i); waterMarkContent.AddImage(image); } //strMsg="success"; returntrue; } catch(Exceptionex) { ex.Message.Trim(); returnfalse; } 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毛票票。