C#生成PDF頁腳第幾頁共幾頁

我在網上找了很久都沒找到在封面顯示生成的PDF總頁數，而後本身摸索着作出來，分享給你們。

我用的是這個組件來實現的.net生成PDF。

首先建立一個工程，而後引用這個組件

而後建立一個頁面，添加一個 按鈕

而後開始寫後臺了。。很少說，直接貼代碼。

protected void Button1_Click(object sender, EventArgs e)
       {
           PDF();
       }　
?
private void PDF()
        {
            string filePath = "C:\\PDF";
            if (false == Directory.Exists(filePath))
                Directory.CreateDirectory(filePath);
            string filename = filePath + "/PDF.pdf";//設置保存路徑
 
            Document doc = new Document(iTextSharp.text.PageSize.A4, 25, 25, 50, 40);//定義pdf大小，設置上下左右邊距
            PdfWriter writer = PdfWriter.GetInstance(doc, new FileStream(filename, FileMode.Create));//生成pdf路徑，建立文件流
 
            doc.Open();
            writer.PageEvent = new HeaderAndFooterEvent();
 
            HeaderAndFooterEvent.PAGE_NUMBER = true;//不實現頁眉跟頁腳
            First(doc, writer);//封面頁
             
            doc.NewPage();//新建一頁
 
            PdfHeader(doc, writer);//在新建的一頁裏面加入數據
            HeaderAndFooterEvent.PAGE_NUMBER = false;//開始書寫頁眉跟頁腳
 
 
            writer.Flush();
            writer.CloseStream = true;
            doc.Close();
        }
 
        private void PdfHeader(Document doc, PdfWriter writer)
        {
            string totalStar = string.Empty;
            writer.PageEvent = new HeaderAndFooterEvent();
            string tmp = "這個是標題";
            doc.Add(HeaderAndFooterEvent.InsertTitleContent(tmp));
        }
 
        private void First(Document doc, PdfWriter writer)
        {
            string tmp = "分析報告";
            doc.Add(HeaderAndFooterEvent.InsertTitleContent(tmp));
 
            tmp = "(正文     頁,附件 0 頁)";
            doc.Add(HeaderAndFooterEvent.InsertTitleContent(tmp));
 
            //模版 顯示總共頁數
            HeaderAndFooterEvent.tpl = writer.DirectContent.CreateTemplate(100, 100); //模版的寬度和高度
            PdfContentByte cb = writer.DirectContent;
            cb.AddTemplate(HeaderAndFooterEvent.tpl, 266, 714);//調節模版顯示的位置
         
        }

而後再新建一個類這個類是用來重寫Itext組件的一些方法的。

 

該類要繼承類PdfPageEventHelper和接口IPdfPageEvent

而後重寫方法

public static PdfTemplate tpl = null ; //模版         public static bool PAGE_NUMBER = false ; //爲True時就生成 頁眉和頁腳           iTextSharp.text.Font font = BaseFontAndSize( "黑體" , 10, Font.NORMAL, BaseColor.BLACK);             //重寫 關閉一個頁面時         public override void OnEndPage(PdfWriter writer, Document document)         {             if (PAGE_NUMBER)             {                Phrase header = new Phrase( "PDF測試生成頁眉分析報告" , font);                  Phrase footer = new Phrase( "第" + (writer.PageNumber - 1) + "頁/共     頁" , font);                PdfContentByte cb = writer.DirectContent;                                 //模版 顯示總共頁數                cb.AddTemplate(tpl, document.Right - 54 + document.LeftMargin, document.Bottom - 8); //調節模版顯示的位置                   //頁眉顯示的位置                 ColumnText.ShowTextAligned(cb, Element.ALIGN_CENTER, header,                        document.Right - 140 + document.LeftMargin, document.Top + 10, 0);                   //頁腳顯示的位置                 ColumnText.ShowTextAligned(cb, Element.ALIGN_CENTER, footer,                        document.Right - 60 + document.LeftMargin, document.Bottom - 10, 0);             }         }           //重寫 打開一個新頁面時         public override void OnStartPage(PdfWriter writer, Document document)         {             if (PAGE_NUMBER)             {                 writer.PageCount = writer.PageNumber-1;             }         }         //關閉PDF文檔時發生該事件         public override void OnCloseDocument(PdfWriter writer, Document document)         {             BaseFont bf = BaseFont.CreateFont( @"c:\windows\fonts\SIMYOU.TTF" , BaseFont.IDENTITY_H, false ); //調用的字體             tpl.BeginText();             tpl.SetFontAndSize(bf, 16); //生成的模版的字體、顏色             tpl.ShowText((writer.PageNumber - 2).ToString()); //模版顯示的內容             tpl.EndText();             tpl.ClosePath();         }         //定義字體 顏色         public static Font BaseFontAndSize( string font_name, int size, int style, BaseColor baseColor)         {             BaseFont baseFont;             BaseFont.AddToResourceSearch( "iTextAsian.dll" );             BaseFont.AddToResourceSearch( "iTextAsianCmaps.dll" );             Font font = null ;             string file_name = "" ;             int fontStyle;             switch (font_name)             {                 case "黑體" :                     file_name = "SIMHEI.TTF" ;                     break ;                 case "華文中宋" :                     file_name = "STZHONGS.TTF" ;                     break ;                 case "宋體" :                     file_name = "SIMYOU.TTF" ;                     break ;                 default :                     file_name = "SIMYOU.TTF" ;                     break ;             }             baseFont = BaseFont.CreateFont( @"c:/windows/fonts/" + file_name, BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED); //字體：黑體             if (style < -1)             {                 fontStyle = Font.NORMAL;             }             else             {                 fontStyle = style;             }             font = new Font(baseFont, size, fontStyle, baseColor);             return font;         }           //定義輸出文本         public static Paragraph InsertTitleContent( string text)         {               iTextSharp.text.Font font = BaseFontAndSize( "華文中宋" , 16, Font.BOLD,BaseColor.BLACK);                          //BaseFont bfSun = BaseFont.CreateFont(@"c:\windows\fonts\STZHONGS.TTF", BaseFont.IDENTITY_H, false); //調用的字體             //Font font = new Font(bfSun, 15);               Paragraph paragraph = new Paragraph(text, font); //新建一行             paragraph.Alignment = Element.ALIGN_CENTER; //居中             paragraph.SpacingBefore = 5;             paragraph.SpacingAfter = 5;             paragraph.SetLeading(1, 2); //每行間的間隔             return paragraph;         }

好了，大功告成了！！！

下載地址：http://download.csdn.net/detail/aasswwe/4356788