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<%@ Page Language="C#" MasterPageFile="~/tpl/Demo.Master" AutoEventWireup="true" CodeBehind="ConcatPdf.aspx.cs" Inherits="Aspose.Pdf.Kit.Demos.ConcatPdf" 
	Title="Concatenate Pdf - Aspose.Pdf.Kit Demos" %>

<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
<table width="90%" align="center" cellspacing="0" cellpadding="0" border="0">
  <tr>
    <td width="19"><img src="../../../../Common/images/heading_lft.jpg" alt="" width="19" height="41" /></td>
    <td width="100%" class="demos-heading-bg"><h2 class="demos-heading-bg"> &nbsp;Concatenate PDF - Aspose.Pdf.Kit</h2></td>
    <td width="19"><img src="../../../../Common/images/heading_rt.jpg" alt="" width="19" height="41" /></td>
  </tr>
<tr>&nbsp;</tr>
</table>

<p class="MsoNormal"><font size=2 face="Arial" ><span style="color:black" >This demo <b> Concatenates </b>  two input PDF files into a single output file.

<br><br>Using <a href=http://www.aspose.com/documentation/.net-components/aspose.pdf.kit-for-.net/aspose.pdf.kit.pdffileeditor.concatenate_overloads.html> Concatenate </a> method in <a href=http://www.aspose.com/documentation/.net-components/aspose.pdf.kit-for-.net/aspose.pdf.kit.pdffileeditor.html> PdfFileEditor</a> class of Aspose.Pdf.Kit component, you can merge/concatenate multiple Pdf documents into a single Pdf file.

<br><br>
Fore more information, please visit <a href=http://www.aspose.com/documentation/.net-components/aspose.pdf.kit-for-.net/concatenate-pdf-documents.html>Concatenate PDF Documents. </a><br><br><br><br></span>


    <p class="componentDescriptionTxt">
        Click <b>Execute Demo</b> to see how demo concatenates <a href="./resources/Aspose.Pdf.Kit.pdf">pdf document 1</a> and
        <a href="./resources/Aspose.Pdf.pdf">pdf document 2</a> enabling user to download results
        of concatenation.
        </p>
    <asp:Button ID="btnConcatenate" runat="server" Text="Concatenate" OnClick="btnConcatenate_Click" />
<p><br><br><br><br><br><br><br><br><br></p>
</asp:Content>

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using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

namespace Aspose.Pdf.Kit.Demos
{
    public partial class ConcatPdf : BasePage
    {
        protected void Page_Load(object sender, EventArgs e)
        {
        }

        protected void btnConcatenate_Click(object sender, EventArgs e)
        {
            // String containing path of the First pdf file
            string inputfile1 = GetResource("Aspose.Pdf.Kit.pdf");
            // String containing path of the Second pdf file
            string inputfile2 = GetResource("Aspose.Pdf.pdf");

            // create an instance of ConcatenateDemo class
            ConcatenateDemo con = new ConcatenateDemo();
            // call Concatenate method of ConcatenateDemo class to merge to files
            con.Concatenate(inputfile1, inputfile2, "output.pdf", Response);

        }
    }
}

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using System;
using System.IO;
using System.Web;
using Aspose.Pdf.Kit;

namespace Aspose.Pdf.Kit.Demos
{
	/// <summary>
	/// Summary of ConcatenateDemo.
	/// </summary>
	public class ConcatenateDemo
	{
		public ConcatenateDemo()
		{
			//
			// 
			//
		}
		public void Concatenate(string inputfile1,string inputfile2,string fileName,HttpResponse response)
		{
		//read input Pdf documents
		FileStream inStream1 = File.Open(inputfile1,FileMode.Open,FileAccess.Read,FileShare.Read);
		FileStream inStream2 = File.Open(inputfile2,FileMode.Open,FileAccess.Read,FileShare.Read);

		//new a PdfFileEditor object
		PdfFileEditor pdfEditor = new PdfFileEditor();
		
		//generate new Pdf file output stream.
		MemoryStream outStream = new MemoryStream();

                //Call Concatenate method of PdfFileEditor object to concatenate all input streams into a single output stream
                pdfEditor.Concatenate(inStream1,inStream2,outStream);

		// create a byte array that will hold the output pdf
                byte[] outBuf = outStream.GetBuffer();

		// specify the duration of time before a page,cached on a browser expires
		response.Expires = 0;

                // Specify the property to buffer the output page
		response.Buffer = true;

		// Erase any buffered HTML output
                response.ClearContent();
            	//Add a new HTML header and value to the response sent to the client
		response.AddHeader("content-disposition","inline; filename=" + "output.pdf");
            	// Specify the HTTP content type for response as Pdf
		response.ContentType = "application/pdf";
                // Write specified information of current HTTP output to Byte array
		response.BinaryWrite(outBuf);
                // close the output stream
		outStream.Close();	
                //end the processing of the current page to ensure that no other HTML content is sent
		response.End();
		}
	}
}