itextsharp 操作合并PDF文件

using System;

using System.Collections;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Web;

using System.Web.SessionState;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.HtmlControls;

using System.IO;

using System.Net;

using System.Text;

using iTextSharp.text;

using iTextSharp.text.pdf;

namespace WebApplication1

{

/// <summary>

/// WebForm5 的摘要说明。

/// </summary>

public class WebForm5 : System.Web.UI.Page

{

protected System.Web.UI.WebControls.Button Button1;

protected System.Web.UI.WebControls.Button btn;

private void Page_Load(object sender, System.EventArgs e)

{

// 在此处放置用户代码以初始化页面

}

#region Web 窗体设计器生成的代码

override protected void OnInit(EventArgs e)

{

//

// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。

//

InitializeComponent();

base.OnInit(e);

}

/// <summary>

/// 设计器支持所需的方法 - 不要使用代码编辑器修改

/// 此方法的内容。

/// </summary>

private void InitializeComponent()

{

this.btn.Click += new System.EventHandler(this.btn_Click);

this.Button1.Click += new System.EventHandler(this.Button1_Click);

this.Load += new System.EventHandler(this.Page_Load);

}

#endregion

private void btn_Click(object sender, System.EventArgs e)

{

string[] pdflist = new string[3];

pdflist[0] = "abc.pdf";

pdflist[1] = "Chap0101.pdf";

pdflist[2] = "Chap0102.pdf";

mergePDFFiles(pdflist,"newpdf1.pdf");

}

/// <summary>

/// 合并pdf文档

/// </summary>

/// <param name="fileList"></param>

/// <param name="outMergeFile"></param>

private void mergePDFFiles(string[] fileList,string outMergeFile)

{

try

{

outMergeFile = Server.MapPath(outMergeFile);

PdfReader reader;

Document document = new Document();

PdfWriter writer = PdfWriter.GetInstance(document,new FileStream(outMergeFile,FileMode.Create));

document.Open();

PdfContentByte cb = writer.DirectContent;

PdfImportedPage newPage;

for(int i = 0;i < fileList.Length;i++)

{

reader = new PdfReader(Server.MapPath(fileList[i]));

int iPageNum = reader.NumberOfPages;

for(int j=1;j<=iPageNum;j++)

{

document.NewPage();

newPage = writer.GetImportedPage(reader,j);

cb.AddTemplate(newPage,0,0);

}

}

document.Close();

}

catch(Exception de)

{

Response.Write(de.Message);

}

}

}

}

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