C#实现合并多个word文档的方法

using System;using System.Collections.Generic;using System.Linq;using System.Web;using Microsoft.Office.Interop.Word;using System.Reflection;using System.IO;using System.Diagnostics;namespace driverexam.WordReport{  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）    /// <summary>     /// 循环合并多个文件（复制合并重复的文件）     /// </summary>     /// <param name="tempDoc">模板文件</param>     /// <param name="arrCopies">需要合并的文件</param>     /// <param name="outDoc">合并后的输出文件</param>     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;      }    }    /// <summary>     /// 循环合并多个文件（复制合并重复的文件）     /// </summary>     /// <param name="tempDoc">模板文件</param>     /// <param name="arrCopies">需要合并的文件</param>     /// <param name="outDoc">合并后的输出文件</param>     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）    /// <summary>     /// 循环合并多个文件（插入合并文件）     /// </summary>     /// <param name="tempDoc">模板文件</param>     /// <param name="arrCopies">需要合并的文件</param>     /// <param name="outDoc">合并后的输出文件</param>     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;      }    }    /// <summary>     /// 循环合并多个文件（插入合并文件）     /// </summary>     /// <param name="tempDoc">模板文件</param>     /// <param name="arrCopies">需要合并的文件</param>     /// <param name="outDoc">合并后的输出文件</param>     public void InsertMerge(string tempDoc, string strCopyFolder, string outDoc)    {      string[] arrFiles = Directory.GetFiles(strCopyFolder);      InsertMerge(tempDoc, arrFiles, outDoc);    }    #endregion  }}