C#生成PDF页脚第几页共几页

我在网上找了很久都没找到在封面显示生成的PDF总页数，而后本身摸索着作出来，分享给你们。

我用的是这个组件来实现的.net生成PDF。

首先建立一个工程，而后引用这个组件

而后建立一个页面，添加一个 按钮

而后开始写后台了。。很少说，直接贴代码。

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";//设置保存路径
 
            Document doc = new Document(iTextSharp.text.PageSize.A4, 25, 25, 50, 40);//定义pdf大小，设置上下左右边距
            PdfWriter writer = PdfWriter.GetInstance(doc, new FileStream(filename, FileMode.Create));//生成pdf路径，建立文件流
 
            doc.Open();
            writer.PageEvent = new HeaderAndFooterEvent();
 
            HeaderAndFooterEvent.PAGE_NUMBER = true;//不实现页眉跟页脚
            First(doc, writer);//封面页
             
            doc.NewPage();//新建一页
 
            PdfHeader(doc, writer);//在新建的一页里面加入数据
            HeaderAndFooterEvent.PAGE_NUMBER = false;//开始书写页眉跟页脚
 
 
            writer.Flush();
            writer.CloseStream = true;
            doc.Close();
        }
 
        private void PdfHeader(Document doc, PdfWriter writer)
        {
            string totalStar = string.Empty;
            writer.PageEvent = new HeaderAndFooterEvent();
            string tmp = "这个是标题";
            doc.Add(HeaderAndFooterEvent.InsertTitleContent(tmp));
        }
 
        private void First(Document doc, PdfWriter writer)
        {
            string tmp = "分析报告";
            doc.Add(HeaderAndFooterEvent.InsertTitleContent(tmp));
 
            tmp = "(正文     页,附件 0 页)";
            doc.Add(HeaderAndFooterEvent.InsertTitleContent(tmp));
 
            //模版 显示总共页数
            HeaderAndFooterEvent.tpl = writer.DirectContent.CreateTemplate(100, 100); //模版的宽度和高度
            PdfContentByte cb = writer.DirectContent;
            cb.AddTemplate(HeaderAndFooterEvent.tpl, 266, 714);//调节模版显示的位置
         
        }

而后再新建一个类这个类是用来重写Itext组件的一些方法的。

 

该类要继承类PdfPageEventHelper和接口IPdfPageEvent

而后重写方法

public static PdfTemplate tpl = null ; //模版         public static bool PAGE_NUMBER = false ; //为True时就生成 页眉和页脚           iTextSharp.text.Font font = BaseFontAndSize( "黑体" , 10, Font.NORMAL, BaseColor.BLACK);             //重写 关闭一个页面时         public override void OnEndPage(PdfWriter writer, Document document)         {             if (PAGE_NUMBER)             {                Phrase header = new Phrase( "PDF测试生成页眉分析报告" , font);                  Phrase footer = new Phrase( "第" + (writer.PageNumber - 1) + "页/共     页" , font);                PdfContentByte cb = writer.DirectContent;                                 //模版 显示总共页数                cb.AddTemplate(tpl, document.Right - 54 + document.LeftMargin, document.Bottom - 8); //调节模版显示的位置                   //页眉显示的位置                 ColumnText.ShowTextAligned(cb, Element.ALIGN_CENTER, header,                        document.Right - 140 + document.LeftMargin, document.Top + 10, 0);                   //页脚显示的位置                 ColumnText.ShowTextAligned(cb, Element.ALIGN_CENTER, footer,                        document.Right - 60 + document.LeftMargin, document.Bottom - 10, 0);             }         }           //重写 打开一个新页面时         public override void OnStartPage(PdfWriter writer, Document document)         {             if (PAGE_NUMBER)             {                 writer.PageCount = writer.PageNumber-1;             }         }         //关闭PDF文档时发生该事件         public override void OnCloseDocument(PdfWriter writer, Document document)         {             BaseFont bf = BaseFont.CreateFont( @"c:\windows\fonts\SIMYOU.TTF" , BaseFont.IDENTITY_H, false ); //调用的字体             tpl.BeginText();             tpl.SetFontAndSize(bf, 16); //生成的模版的字体、颜色             tpl.ShowText((writer.PageNumber - 2).ToString()); //模版显示的内容             tpl.EndText();             tpl.ClosePath();         }         //定义字体 颜色         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 "黑体" :                     file_name = "SIMHEI.TTF" ;                     break ;                 case "华文中宋" :                     file_name = "STZHONGS.TTF" ;                     break ;                 case "宋体" :                     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); //字体：黑体             if (style < -1)             {                 fontStyle = Font.NORMAL;             }             else             {                 fontStyle = style;             }             font = new Font(baseFont, size, fontStyle, baseColor);             return font;         }           //定义输出文本         public static Paragraph InsertTitleContent( string text)         {               iTextSharp.text.Font font = BaseFontAndSize( "华文中宋" , 16, Font.BOLD,BaseColor.BLACK);                          //BaseFont bfSun = BaseFont.CreateFont(@"c:\windows\fonts\STZHONGS.TTF", BaseFont.IDENTITY_H, false); //调用的字体             //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); //每行间的间隔             return paragraph;         }

好了，大功告成了！！！

下载地址：http://download.csdn.net/detail/aasswwe/4356788