艾伟_转载：用C#编程合并多个WORD文档

  using System;
using System.Collections.Generic;
using System.Text;
using Microsoft.Office.Interop.Word;
using System.Reflection;
using System.IO;
using System.Diagnostics;
namespace Eipsoft.Common
{
///
/// Word文档合并类
///
    public class WordDocumentMerger
    {
private ApplicationClass objApp = null;
private Document objDocLast = null;
private Document objDocBeforeLast = null;
public WordDocumentMerger()
        {
            objApp = new ApplicationClass();
        }
#region 打开文件
private void Open(string tempDoc)
        {
object objTempDoc = tempDoc;
object objMissing = System.Reflection.Missing.Value;

            objDocLast = objApp.Documents.Open(
ref objTempDoc,    //FileName
                 ref objMissing,   //ConfirmVersions
                 ref objMissing,   //ReadOnly
                 ref objMissing,   //AddToRecentFiles
                 ref objMissing,   //PasswordDocument
                 ref objMissing,   //PasswordTemplate
                 ref objMissing,   //Revert
                 ref objMissing,   //WritePasswordDocument
                 ref objMissing,   //WritePasswordTemplate
                 ref objMissing,   //Format
                 ref objMissing,   //Enconding
                 ref objMissing,   //Visible
                 ref objMissing,   //OpenAndRepair
                 ref objMissing,   //DocumentDirection
                 ref objMissing,   //NoEncodingDialog
                 ref objMissing    //XMLTransform
                 );

            objDocLast.Activate();
        }
#endregion

#region 保存文件到输出模板
private void SaveAs(string outDoc)
        {
object objMissing = System.Reflection.Missing.Value;
object objOutDoc = outDoc;
            objDocLast.SaveAs(
ref objOutDoc,      //FileName
              ref objMissing,     //FileFormat
              ref objMissing,     //LockComments
              ref objMissing,     //PassWord    
              ref objMissing,     //AddToRecentFiles
              ref objMissing,     //WritePassword
              ref objMissing,     //ReadOnlyRecommended
              ref objMissing,     //EmbedTrueTypeFonts
              ref objMissing,     //SaveNativePictureFormat
              ref objMissing,     //SaveFormsData
              ref objMissing,     //SaveAsAOCELetter,
              ref objMissing,     //Encoding
              ref objMissing,     //InsertLineBreaks
              ref objMissing,     //AllowSubstitutions
              ref objMissing,     //LineEnding
              ref objMissing      //AddBiDiMarks
              );
        }
#endregion

#region 循环合并多个文件（复制合并重复的文件）
///
/// 循环合并多个文件（复制合并重复的文件）
///
/// 模板文件
/// 需要合并的文件
/// 合并后的输出文件
        public void CopyMerge(string tempDoc, string[] arrCopies, string outDoc)
        {
object objMissing = Missing.Value;
object objFalse = false;
object objTarget = WdMergeTarget.wdMergeTargetSelected;
object objUseFormatFrom = WdUseFormattingFrom.wdFormattingFromSelected;
try
            {
//打开模板文件
                Open(tempDoc);
foreach (string strCopy in arrCopies)
                {
                    objDocLast.Merge(
                      strCopy,                //FileName   
                      ref objTarget,          //MergeTarget
                      ref objMissing,         //DetectFormatChanges
                      ref objUseFormatFrom,   //UseFormattingFrom
                      ref objMissing          //AddToRecentFiles
                      );
                    objDocBeforeLast = objDocLast;
                    objDocLast = objApp.ActiveDocument;
if (objDocBeforeLast != null)
                    {
                        objDocBeforeLast.Close(
ref objFalse,     //SaveChanges
                          ref objMissing,   //OriginalFormat
                          ref objMissing    //RouteDocument
                          );
                    }
                }
//保存到输出文件
                SaveAs(outDoc);
foreach (Document objDocument in objApp.Documents)
                {
                    objDocument.Close(
ref objFalse,     //SaveChanges
                      ref objMissing,   //OriginalFormat
                      ref objMissing    //RouteDocument
                      );
                }
            }
finally
            {
                objApp.Quit(
ref objMissing,     //SaveChanges
                  ref objMissing,     //OriginalFormat
                  ref objMissing      //RoutDocument
                  );
                objApp = null;
            }
        }
///
/// 循环合并多个文件（复制合并重复的文件）
///
/// 模板文件
/// 需要合并的文件
/// 合并后的输出文件
        public void CopyMerge(string tempDoc, string strCopyFolder, string outDoc)
        {
string[] arrFiles = Directory.GetFiles(strCopyFolder);
            CopyMerge(tempDoc, arrFiles, outDoc);
        }
#endregion

#region 循环合并多个文件（插入合并文件）
///
/// 循环合并多个文件（插入合并文件）
///
/// 模板文件
/// 需要合并的文件
/// 合并后的输出文件
        public void InsertMerge(string tempDoc, string[] arrCopies, string outDoc)
        {
object objMissing = Missing.Value;
object objFalse = false;
object confirmConversion = false;
object link = false;
object attachment = false;
try
            {
//打开模板文件
                Open(tempDoc);
foreach (string strCopy in arrCopies)
                {
                    objApp.Selection.InsertFile(
                        strCopy,
ref objMissing,
ref confirmConversion,
ref link,
ref attachment
                        );
                }
//保存到输出文件
                SaveAs(outDoc);
foreach (Document objDocument in objApp.Documents)
                {
                    objDocument.Close(
ref objFalse,     //SaveChanges
                      ref objMissing,   //OriginalFormat
                      ref objMissing    //RouteDocument
                      );
                }
            }
finally
            {
                objApp.Quit(
ref objMissing,     //SaveChanges
                  ref objMissing,     //OriginalFormat
                  ref objMissing      //RoutDocument
                  );
                objApp = null;
            }
        }
///
/// 循环合并多个文件（插入合并文件）
///
/// 模板文件
/// 需要合并的文件
/// 合并后的输出文件
        public void InsertMerge(string tempDoc, string strCopyFolder, string outDoc)
        {
string[] arrFiles = Directory.GetFiles(strCopyFolder);
            InsertMerge(tempDoc, arrFiles, outDoc);
        }
#endregion
    }
}