Merge word document files in asp.net c#

Merge word document files in asp.net c#

Introduction : 
This article show you how to merge or combine two more doc files in Asp.net using C# .
I have created one function to merge multiple word file in c# .it is very easy to use .You just need to pass word file path arrays and save file path . Then i will save  merged word document file .

Add following dll reference to your application :

Microsoft.Office.Interop.Word

Code for merge word doc files : 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Microsoft.Office.Interop.Word;

namespace HamidSite
{
    public partial class MergerWorddocs : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            string[] DocsFiles = new string[] { @"C:\Merfiles\Doc1.docx", @"C:\Merfiles\Doc2.docx" };
            string PathToSave =Server.MapPath("MergesDocs/MergeDoc.docx");
            Merge(DocsFiles,PathToSave,true);
            
        }
        public void Merge(string[] filesToMerge, string fileSavePath, bool insertPageBreaks)
        {  
            object missing = System.Type.Missing;
            object pageBreak = WdBreakType.wdPageBreak;
            object outputFile = fileSavePath;
           
            Application wordApplication = new Application();
            try
            {                
                Document wordDocument = wordApplication.Documents.Add(ref missing, ref missing , ref missing , ref missing);                           
                Selection selection = wordApplication.Selection;
               
                foreach (string docFile in filesToMerge)
                {
                    selection.InsertFile(docFile , ref missing , ref missing , ref missing , ref missing);
                    if (insertPageBreaks)
                    {
                        selection.InsertBreak(ref pageBreak);
                    }
                }               
                wordDocument.SaveAs(ref outputFile, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing, ref missing);
                wordDocument = null;
                wordApplication.Quit(ref missing, ref missing, ref missing);
            }
            catch (Exception ex) { throw ex; }           
        }
    }
}