Csharp Word 插入頁眉頁腳，自動頁碼

using Microsoft.Office.Interop.Word; //ver 12.0

       /// <summary>
        /// 自動頁碼，頁眉頁腳
        /// 20120603 塗聚文
        /// Geovin Du
        /// </summary>
        /// <param name="pPageHeader">頁眉自定義文字</param>
        /// <param name="pPageFoot">頁腳自定義文字</param>
        public void SetPageHeaderAndFooter(string pPageHeader, string pPageFoot)
        {
            Object missing = System.Reflection.Missing.Value;
            //1 
            //添加页眉  
            //this._wordApplication.ActiveWindow.View.Type = Microsoft.Office.Interop.Word.WdViewType.wdOutlineView;
            //this._wordApplication.ActiveWindow.View.SeekView = Microsoft.Office.Interop.Word.WdSeekView.wdSeekPrimaryHeader;
            //this._wordApplication.ActiveWindow.ActivePane.Selection.InsertAfter(pPageHeader);
            ////设置中间对齐  
            //this._wordApplication.Selection.ParagraphFormat.Alignment = Microsoft.Office.Interop.Word.WdParagraphAlignment.wdAlignParagraphCenter;
            ////跳出页眉设置  
            //this._wordApplication.ActiveWindow.View.SeekView = Microsoft.Office.Interop.Word.WdSeekView.wdSeekMainDocument;

            //_wordApplication.DisplayAlerts = Microsoft.Office.Interop.Word.WdAlertLevel.wdAlertsMessageBox;
            //頁腳
            //this._wordApplication.ActiveWindow.View.SeekView = Microsoft.Office.Interop.Word.WdSeekView.wdSeekEvenPagesFooter;
            //this._wordApplication.ActiveWindow.ActivePane.Selection.InsertAfter(pPageHeader);


            //http://www.c-sharpcorner.com/UploadFile/amrish_deep/WordAutomation05102007223934PM/WordAutomation.aspx
            //2.设置要插入到文档各部分主页脚中的文本的字体。此代码示例使用活动文档。
            //http://msdn.microsoft.com/zh-cn/library/ms178795(v=vs.90).aspx
            foreach (Microsoft.Office.Interop.Word.Section wordSection in this._wordDocument.Sections)
            {
                wordSection.Footers[Microsoft.Office.Interop.Word.WdHeaderFooterIndex.wdHeaderFooterPrimary].Range.Font.ColorIndex = Microsoft.Office.Interop.Word.WdColorIndex.wdDarkRed;
                wordSection.Headers[Microsoft.Office.Interop.Word.WdHeaderFooterIndex.wdHeaderFooterPrimary].Range.Font.ColorIndex = Microsoft.Office.Interop.Word.WdColorIndex.wdBlue;
                wordSection.Footers[Microsoft.Office.Interop.Word.WdHeaderFooterIndex.wdHeaderFooterPrimary].Range.Font.Size = 9;
                wordSection.Headers[Microsoft.Office.Interop.Word.WdHeaderFooterIndex.wdHeaderFooterPrimary].Range.Font.Size = 9;

                //2.将文本插入到页脚中
                wordSection.Footers[Microsoft.Office.Interop.Word.WdHeaderFooterIndex.wdHeaderFooterPrimary].Range.Text = pPageFoot;
                wordSection.Headers[Microsoft.Office.Interop.Word.WdHeaderFooterIndex.wdHeaderFooterPrimary].Range.Text = pPageHeader;
            }
            //1.添加“自动图文集”项，以在文档的每个页眉中显示“第 X 页，共 Y 页
            //foreach (Microsoft.Office.Interop.Word.Section section in this._wordDocument.Sections)
            //{
            //    object fieldEmpty = Microsoft.Office.Interop.Word.WdFieldType.wdFieldEmpty;
            //    object autoText = "AUTOTEXT  \"Page X of Y\" ";
            //    object preserveFormatting = true;

            //    section.Headers[Microsoft.Office.Interop.Word.WdHeaderFooterIndex.wdHeaderFooterPrimary].Range.Fields.Add(
            //        section.Headers[Microsoft.Office.Interop.Word.WdHeaderFooterIndex.wdHeaderFooterPrimary].Range,
            //        ref fieldEmpty, ref autoText, ref preserveFormatting);

            //    section.Headers[Microsoft.Office.Interop.Word.WdHeaderFooterIndex.wdHeaderFooterPrimary]
            //           .Range.ParagraphFormat.Alignment = Microsoft.Office.Interop.Word.WdParagraphAlignment.wdAlignParagraphRight;
            //}



            //自动页码设置
            //John Yang  http://social.msdn.microsoft.com/Forums/en/vsto/thread/a044ff2d-b4a7-4f19-84f4-f3d5c55396a8
            object oAlignment = Microsoft.Office.Interop.Word.WdPageNumberAlignment.wdAlignPageNumberCenter; 

            // Open up the footer in the word document
            this._wordApplication.ActiveWindow.ActivePane.View.SeekView = Microsoft.Office.Interop.Word.WdSeekView.wdSeekCurrentPageFooter;

            // Set current Paragraph Alignment to Center
            this._wordApplication.ActiveWindow.ActivePane.Selection.Paragraphs.Alignment = Microsoft.Office.Interop.Word.WdParagraphAlignment.wdAlignParagraphRight; //.wdAlignParagraphCenter
            

            // Type in 'Page '
            this._wordApplication.ActiveWindow.Selection.TypeText("Page ");

            // Add in current page field
            Object CurrentPage = Microsoft.Office.Interop.Word.WdFieldType.wdFieldPage;
            this._wordApplication.ActiveWindow.Selection.Fields.Add(this._wordApplication.ActiveWindow.Selection.Range, ref CurrentPage, ref missing, ref missing);

            // Type in ' of '
            this._wordApplication.ActiveWindow.Selection.TypeText(" of ");

            // Add in total page field
            Object TotalPages = Microsoft.Office.Interop.Word.WdFieldType.wdFieldNumPages;
            this._wordApplication.ActiveWindow.Selection.Fields.Add(this._wordApplication.ActiveWindow.Selection.Range, ref TotalPages, ref missing, ref missing);


            object start = 0; 
            object end = 7;
            Microsoft.Office.Interop.Word.Range rg = this._wordDocument.Range(ref start,ref end);
            rg.Select();

            
        }