用C#制作PDF文件全攻略(转)

来源：互联网发布：linux gec编辑编辑：程序博客网时间：2024/05/17 09:04

用C#制作PDF文件全攻略(转)

iTextSharp是一款开源的PDF操作类库，使用它可以快速的创建PDF文件。

中文参考网站：http://hardrock.cnblogs.com/

http://pdfhome.hope.com.cn/Article.aspx?CID=bf51a5b6-78a5-4fa3-9310-16e04aee8c78&AID=f5fe52dd-8419-4baa-ab1c-ea3f26952132

英文参考网站：http://itext.ugent.be/library/

· 技术文章（http://itext.ugent.be/articles/）

· 在线示例（http://itextdocs.lowagie.com/tutorial/）

· 英文API（http://itext.ugent.be/library/api/）

iTextSharp常用对象:

Document:（文档）生成pdf必备的一个对象。

生成一个Document示例。
Document document = new Document(PageSize.A4, 30, 30, 5, 5);
打开当前Document
document.Open();
为当前Document添加内容：
document.Add(new Paragraph("Hello World"));
关闭Document
document.Close();

Chunk：(块)是能被添加到（Document）文档的文本的最小单位，块可以用于构建其他基础元素如(Paragraph)段落。
创建了一个内容为“hello World”、红色、斜体、COURIER字体、尺寸20的一个块：

Chunk chunk = new Chunk("Hello world", FontFactory.GetFont(FontFactory.COURIER, 20, Font.ITALIC, new Color(255, 0, 0)));
document.Add(new Paragraph(chunk));

Paragraph:（段落）段落是一系列块构成，段落有确定的间距。段落可以左对齐、右对齐和居中对齐。添加到文档中的每一个段落将自动另起一行。

   //构建一个段落实例
               Paragraph ph1 = new Paragraph();
               //构建块"chunk1"
               Chunk chunk1 = new Chunk("Hello world", FontFactory.GetFont(FontFactory.COURIER, 20, Font.ITALIC, new Color(255, 0, 0)));
               //向块中追加内容
chunk1.Append(" Hello Mi");
            //构建块"chunk2"
            Chunk chunk2 = new Chunk(" Word hello", FontFactory.GetFont(FontFactory.COURIER, 20, Font.ITALIC, new Color(255, 255, 0)));
            //向块中追加内容
            chunk2.Append(" Hello Mi");
            //将块加入到段落中
            ph1.Add(chunk1);
            ph1.Add(chunk2);
            //构建一个图片对像实例
            Image jpg1 = Image.GetInstance("myKids.jpg");
            jpg1.Alignment = Element.ALIGN_CENTER;
            ph1.Add(jpg1);
            //设定段落的间距
            ph1.Leading = 14;
            //段落左对其
            ph1.Alignment = Element.ALIGN_CENTER;
            //将段落添加到pdf文档中显示出来
            document.Add(ph1);
Image gif = Image.getInstance("vonnegut.gif");
            Image jpeg = Image.getInstance("myKids.jpg");
            Image png = Image.getInstance("hitchcock.png");
            jpeg.ScalePercent(10);//将图片按%大小显示。
            jpeg.SetAbsolutePosition(0, 0);// 图片放要页面上一个绝对位置(0,0)
         jpeg.Alignment = Image.ALIGN_TOP;//设置图片的对其方式。

Table：（表格）Pdf里面重要的布局对象。

<table width="595" border="0" cellpadding="3" cellspacing="2">
<tr>
   <td colspan="3" ><img src="surfing.gif" /></td>
</tr>
<tr>
   <td width="60%" rowspan="2" bgcolor="#00CC99">aaaaaa</td>
   <td width="20%" height="48">bbbbb</td>
   <td width="20%">cccccc</td>
</tr>
<tr>
   <td >dddd</td>
   <td>eeeeee</td>
</tr>
</table>
//定一个3行，列的表格
            //创建一个表格最通用的办法是预先知道有几行几列：
            //public Table(int columns, int rows);

            Table tb1 = new Table(3, 3);
            //设定表格的总体宽度
            tb1.AbsWidth = "595";
            tb1.Cellpadding = 2;
            tb1.Cellspacing = 3;
            //定义表格各个列的宽度
            tb1.Widths=new float[]...{60,20,20};
            //定义表格的bord的宽度为
            //定义表格的bord的宽度为tb1.BorderWidth =1;
            tb1.Border = Rectangle.NO_BORDER;
            tb1.DefaultCellBorder = Rectangle.NO_BORDER;

            Image top1 = Image.GetInstance("surfing.gif");
            Cell cell = new Cell(top1);

cell.Colspan = 3;


            tb1.AddCell(cell);

            cell = new Cell(new Paragraph("aaaaaa"));
            cell.Rowspan = 2;
            System.Drawing.ColorConverter htmColor = new System.Drawing.ColorConverter();
            Color pdfColor=new Color((System.Drawing.Color)htmColor.ConvertFromString("#00CC99"));
            cell.BackgroundColor = pdfColor;
            cell.HorizontalAlignment = Element.ALIGN_RIGHT;


            tb1.AddCell(cell);

            cell = new Cell(new Paragraph("bbbbb"));
            cell.Leading = 48;


            tb1.AddCell(cell);

cell = new Cell(new Paragraph("cccccc"));
tb1.AddCell(cell);

cell = new Cell(new Paragraph("dddd"));
tb1.AddCell(cell);

cell = new Cell(new Paragraph("eeeeee"));
tb1.AddCell(cell);

document.Add(tb1);

PdfPTable:Table对象可以转化成PdfPTable,因为现在的类库的PdfPTable不支持rowspan大于1，所以转化的table的rowspan不能大于1，PdfPTable可以浮动在pdf页的任意

PdfWriter writer = PdfWriter.GetInstance(document, new FileStream("Chap0103.pdf", FileMode.Create));
            document.Open();
         //定义一个1列2行的table
            Table tb1 = new Table(1, 2);
            //设定表格的总体宽度
            tb1.AbsWidth = "595";
            tb1.Cellpadding = 2;
            tb1.Cellspacing = 3;
            //定义表格各个列的宽度


            tb1.Border = Rectangle.NO_BORDER;
            tb1.DefaultCellBorder = Rectangle.NO_BORDER;
            Cell cell = new Cell(new Paragraph("kkkkkkkkk"));
            System.Drawing.ColorConverter htmColor = new System.Drawing.ColorConverter();
            Color pdfColor = new Color((System.Drawing.Color)htmColor.ConvertFromString("#00CC99"));
            cell.BackgroundColor = pdfColor;
            cell.Leading = 14;
            tb1.AddCell(cell);
            cell = new Cell(new Paragraph("bbbbb"));
            cell.Leading = 14;
            tb1.AddCell(cell);
               //允许转换PdfPTable
            tb1.Convert2pdfptable = true;
            //转换为PdfPTable
            PdfPTable ptbm = tb1.CreatePdfPTable();

ptbm.SetTotalWidth(new float[] ...{595});
ptbm.WriteSelectedRows(0, -1, document.LeftMargin + 100, document.BottomMargin + 400, writer.DirectContent);

IPdfPageEvent:这是一个重要的接口，它定义了的方法有

IPdfPageEvent Members#region IPdfPageEvent Members

      public void OnOpenDocument(PdfWriter writer, Document document)
      ...{


      }

      public void OnCloseDocument(PdfWriter writer, Document document)
      ...{


      }

      public void OnParagraph(PdfWriter writer, Document document, float paragraphPosition)
...{
         // TODO: Add PageNumbersWatermark.OnParagraph implementation
      }

      public void OnEndPage(PdfWriter writer, Document document)
      ...{


      }

      public void OnSection(PdfWriter writer, Document document, float paragraphPosition, int depth, Paragraph title)
      ...{
         // TODO: Add PageNumbersWatermark.OnSection implementation
      }

      public void OnSectionEnd(PdfWriter writer, Document document, float paragraphPosition)
      ...{
         // TODO: Add PageNumbersWatermark.OnSectionEnd implementation
      }
public void OnParagraphEnd(PdfWriter writer, Document document, float paragraphPosition)
      ...{
         // TODO: Add PageNumbersWatermark.OnParagraphEnd implementation
      }

      public void OnGenericTag(PdfWriter writer, Document document, Rectangle rect, string text)
      ...{
         // TODO: Add PageNumbersWatermark.OnGenericTag implementation
      }

      public void OnChapterEnd(PdfWriter writer, Document document, float paragraphPosition)
      ...{
         // TODO: Add PageNumbersWatermark.OnChapterEnd implementation
      }

      public void OnChapter(PdfWriter writer, Document document, float paragraphPosition, Paragraph title)

...{
         // TODO: Add PageNumbersWatermark.OnChapter implementation
      }

      public void OnStartPage(PdfWriter writer, Document document)
      ...{


      }

#endregion

设定生成pageEvent

PdfWriter writer=PdfWriter.GetInstance(document, new FileStream(FileUrl, FileMode.Create));
   //页面事件指向IPdfPageEvent接口
      writer.PageEvent = this;

PdfWriter writer=PdfWriter.GetInstance(document, new FileStream(FileUrl, FileMode.Create));
      //页面事件指向IPdfPageEvent接口
      writer.PageEvent = this;