Itextsharp 是一個很強大，開源的，輕量級的 PDF 生成組件，官方網上好像沒有相應的API 說明文檔，以下是在工作中使用的心得與體會，並附上源碼，功能包含了pdf 的創建，table 的創建， 圖片的創建以及pdf 文件的讀取 。 歡迎轉載，轉載時，請注明出處。
首先，從Git Itextsharp 官方網站中 ，下載itextsharp.dll 文件，或從VS 的NUGET 管理包中進行添加引用，然后在項目中引用，Demon 中使用的是最新的版本 itextsharp.5.5.13.0 ，或使用該Demon 中的Itextsharp.dll, Git 官網會不定時進行更新，建議使用最新的 Itextsharp.dll 版本。
Demon 是個wpf 窗體文件，MainWindow.xaml.cs代碼如下：
* Copyright: ©2016-2018 dell All Rights Reserved. * * Current CLR Version: 4.0.30319.18063 * * ProjectName: iTextSharp Demon * * Assembly：1.0.0.0 * * Author：Will * * Created：2018/7/23 10:04:06 * * Description： * * ****************************************************************** * * Modify By： * * Modify On： * * Modify Description: * * ***************************************************************** * */ using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Navigation; using System.Windows.Shapes; using iTextSharp.text; using iTextSharp.text.pdf; using System.IO; namespace PdfDemo { /// <summary> /// MainWindow.xaml 的交互邏輯 /// </summary> public partial class MainWindow : Window { public MainWindow() { InitializeComponent(); } /// <summary> /// 我得第一個Pdf程序 /// </summary> private void CreatePdf() { Microsoft.Win32.SaveFileDialog dialog = GetDialoag(); Nullable<bool> result = dialog.ShowDialog(); if (result == true) { Document document = new Document(); PdfWriter.GetInstance(document, new FileStream(dialog.FileName, FileMode.Create)); document.Open(); iTextSharp.text.Paragraph paragraph = new iTextSharp.text.Paragraph("Hello World"); document.Add(paragraph); document.Close(); System.Diagnostics.Process.Start(dialog.FileName); } } /// <summary> /// 設置頁面大小、作者、標題等相關信息設置 /// </summary> private void CreatePdfSetInfo() { Microsoft.Win32.SaveFileDialog dialog = GetDialoag(); Nullable<bool> result = dialog.ShowDialog(); if (result == true) { //設置紙張大小，自定義大小 iTextSharp.text.Rectangle pageSize = new iTextSharp.text.Rectangle(216f, 716f); pageSize.BackgroundColor = new iTextSharp.text.BaseColor(0xFF, 0xFF, 0xDE); //設置邊界 using (Document document = new Document(pageSize, 36f, 72f, 108f, 180f)) { // 也可使用系統定義的紙張大小 // Document document = new Document(PageSize.A4, 0, 0, 45, 25); var writer = PdfWriter.GetInstance(document, new FileStream(dialog.FileName, FileMode.Create)); document.Open(); // 添加文檔信息 document.AddTitle("PDF Document Create by iTextSharp"); document.AddSubject("Welcome to use iTextSharp"); document.AddKeywords("PDF,iTextSharp"); document.AddCreator("Create by will"); document.AddAuthor("Will"); // 添加文檔內容 for (int i = 0; i < 5; i++) { document.Add(new iTextSharp.text.Paragraph("Hello World! Successfuly Create PDF document! ")); } writer.Flush(); document.Close(); System.Diagnostics.Process.Start(dialog.FileName); } } } /// <summary> /// 創建多個Pdf新頁 /// </summary> private void CreateTextPDF() { Microsoft.Win32.SaveFileDialog dialog = GetDialoag(); Nullable<bool> result = dialog.ShowDialog(); if (result == true) { using (Document document = new Document(PageSize.NOTE)) { PdfWriter writer = PdfWriter.GetInstance(document, new FileStream(dialog.FileName, FileMode.Create)); document.Open(); // 新宋體字，后面的1是索引，索引從0開始，索引的可選項： 0， 1 ；不可省略，因宋體字有兩種，宋體，新宋 string fontFile = @"C:\Windows\Fonts\SIMSUN.TTC,1"; // 字體 BaseFont bFont = BaseFont.CreateFont(fontFile, BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED); iTextSharp.text.Font font = new iTextSharp.text.Font(bFont, 9.0f); for (int k = 1; k < 4; k++) { // 添加新頁面,第k 頁 document.NewPage(); // 重新開始頁面計數 // document.ResetPageCount(); for (int i = 1; i < 21; i++) { // 使用chuck 可有效的輸出文字 // 也可使用 document.Add(new iTextSharp.text.Paragraph("Hello World, Hello World, Hello World, Hello World, Hello World")); Chunk chuck = new iTextSharp.text.Chunk("Hello,Hello,Hello,Hello, How are you?"); // 文字字體 chuck.Font = font; var paragraph = new iTextSharp.text.Paragraph(chuck); // 對齊方式，劇中對齊 paragraph.Alignment = Element.ALIGN_CENTER; paragraph.SpacingAfter = 5.0f; document.Add(paragraph); } } writer.Flush(); document.Close(); System.Diagnostics.Process.Start(dialog.FileName); } } } /// <summary> /// 生成圖片pdf頁（pdf中插入圖片） /// </summary> public void CreatePDFImage() { //臨時文件路徑 string imagePath = AppDomain.CurrentDomain.BaseDirectory + @"Image\1.jpg"; Microsoft.Win32.SaveFileDialog dialog = GetDialoag(); Nullable<bool> result = dialog.ShowDialog(); if (result == true) { using (Document document = new Document()) { PdfWriter writer = PdfWriter.GetInstance(document, new FileStream(dialog.FileName, FileMode.Create)); document.Open(); iTextSharp.text.Image img = iTextSharp.text.Image.GetInstance(imagePath); // 圖片位置 img.SetAbsolutePosition((PageSize.A4.Width - img.ScaledWidth) / 2, (PageSize.A4.Height - img.ScaledHeight) / 2); writer.DirectContent.AddImage(img); iTextSharp.text.Paragraph p = new iTextSharp.text.Paragraph("Hi,I am Wang Wang", new iTextSharp.text.Font(Font.FontFamily.HELVETICA, 22f)); p.Alignment = Element.ALIGN_CENTER; document.Add(p); writer.Flush(); document.Close(); System.Diagnostics.Process.Start(dialog.FileName); } } } /// <summary> /// iTextSharp 讀取pdf 文件 /// </summary> private void ReadPdf() { try { string fileName = AppDomain.CurrentDomain.BaseDirectory + @"File\ITextSharp Demon.pdf"; // 創建一個PdfReader對象 PdfReader reader = new PdfReader(fileName); // 獲得文檔頁數 int n = reader.NumberOfPages; // 獲得第一頁的大小 iTextSharp.text.Rectangle psize = reader.GetPageSize(1); float width = psize.Width; float height = psize.Height; // 創建一個文檔變量 Document document = new Document(psize, 50, 50, 50, 50); // 創建該文檔 PdfWriter writer = PdfWriter.GetInstance(document, new FileStream(@"C:\Read.pdf", FileMode.Create)); // 打開文檔 document.Open(); // 添加內容 PdfContentByte cb = writer.DirectContent; int i = 0; int p = 0; Console.WriteLine("一共有 " + n + " 頁."); while (i < n) { document.NewPage(); p++; i++; PdfImportedPage page1 = writer.GetImportedPage(reader, i); cb.AddTemplate(page1, .5f, 0, 0, .5f, 0, height / 2); Console.WriteLine("處理第 " + i + " 頁"); if (i < n) { i++; PdfImportedPage page2 = writer.GetImportedPage(reader, i); cb.AddTemplate(page2, .5f, 0, 0, .5f, width / 2, height / 2); Console.WriteLine("處理第 " + i + " 頁"); } if (i < n) { i++; PdfImportedPage page3 = writer.GetImportedPage(reader, i); cb.AddTemplate(page3, .5f, 0, 0, .5f, 0, 0); Console.WriteLine("處理第 " + i + " 頁"); } if (i < n) { i++; PdfImportedPage page4 = writer.GetImportedPage(reader, i); cb.AddTemplate(page4, .5f, 0, 0, .5f, width / 2, 0); Console.WriteLine("處理第 " + i + " 頁"); } cb.SetRGBColorStroke(255, 0, 0); cb.MoveTo(0, height / 2); cb.LineTo(width, height / 2); cb.Stroke(); cb.MoveTo(width / 2, height); cb.LineTo(width / 2, 0); cb.Stroke(); BaseFont bf = BaseFont.CreateFont(BaseFont.HELVETICA, BaseFont.CP1252, BaseFont.NOT_EMBEDDED); cb.BeginText(); cb.SetFontAndSize(bf, 14); cb.ShowTextAligned(PdfContentByte.ALIGN_CENTER, "page " + p + " of " + ((n / 4) + (n % 4 > 0 ? 1 : 0)), width / 2, 40, 0); cb.EndText(); } // 關閉文檔 document.Close(); } catch (Exception e) { throw e; } } /// <summary> /// pdf 閱讀器打開 pdf 文件 /// </summary> private void ReadPdfNormal() { try { string fileName = AppDomain.CurrentDomain.BaseDirectory + @"File\ITextSharp Demon.pdf"; System.Diagnostics.Process.Start(fileName); } catch (Exception e) { throw e; } } /// <summary> /// 創建PDF表格 /// </summary> public void CreatePDFTable() { Microsoft.Win32.SaveFileDialog dialog = GetDialoag(); Nullable<bool> result = dialog.ShowDialog(); if (result != null && result.Equals(true)) { using (Document document = new Document()) { PdfWriter writer = PdfWriter.GetInstance(document, new FileStream(dialog.FileName, FileMode.Create)); document.Open(); PdfPTable table = new PdfPTable(5); for (int i = 1; i < 100; i++) { PdfPCell cell = new PdfPCell(new Phrase("Cell " + i + "colspan 4 rowspan 1")); // 單元格占的列數，5列 cell.Colspan = 4; // 單元格占的行數，3行 cell.Rowspan = 1; // 邊框 cell.BorderWidth = 0.2f; // 邊框顏色 cell.BorderColor = BaseColor.BLACK; // 水平對齊方式，劇中 cell.HorizontalAlignment = Element.ALIGN_CENTER; // 垂直對齊方式： 劇中 cell.VerticalAlignment = Element.ALIGN_MIDDLE; // 添加單元格 table.AddCell(cell); PdfPCell cell2 = new PdfPCell(new Phrase("Cell " + i + "colspan 1 rowspan 1")); // 邊框 cell2.BorderWidth = 0.2f; // 邊框顏色 cell2.BorderColor = BaseColor.BLACK; // 水平對齊方式，劇中 cell2.HorizontalAlignment = Element.ALIGN_CENTER; // 垂直對齊方式： 劇中 cell2.VerticalAlignment = Element.ALIGN_MIDDLE; // 添加單元格 table.AddCell(cell2); } document.Add(table); writer.Flush(); document.Close(); System.Diagnostics.Process.Start(dialog.FileName); } } } /// <summary> /// 保存文件對話框 /// </summary> /// <returns></returns> public Microsoft.Win32.SaveFileDialog GetDialoag() { Microsoft.Win32.SaveFileDialog dialog = new Microsoft.Win32.SaveFileDialog(); dialog.FileName = "ITextSharp Demon"; dialog.DefaultExt = ".pdf"; dialog.Filter = "Text documents (.pdf)|*.pdf"; return dialog; } // 創建表格 private void btnTable_Click(object sender, RoutedEventArgs e) { CreateTextPDF(); } // 創建文本 private void btnText_Click(object sender, RoutedEventArgs e) { CreatePDFTable(); } // 讀取pdf private void btnRead_Click(object sender, RoutedEventArgs e) { //ReadPdf(); ReadPdfNormal(); } // 創建圖片 private void btnImage_Click(object sender, RoutedEventArgs e) { CreatePDFImage(); } } }
MainWindow.xaml 代碼如下 ：
<Window x:Class="PdfDemo.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="MainWindow" Height="350" Width="525"> <Grid> <Button Content="創建文本" Height="23" HorizontalAlignment="Left" Margin="38,268,0,0" Name="button1" VerticalAlignment="Top" Width="75" Click="btnText_Click" /> <Button Content="創建表格" Height="23" HorizontalAlignment="Left" Margin="266,0,0,20" Name="button2" VerticalAlignment="Bottom" Width="75" Click="btnTable_Click" /> <Button Content="創建圖片" Height="23" HorizontalAlignment="Left" Margin="379,268,0,0" Name="button3" VerticalAlignment="Top" Width="75" Click="btnImage_Click" /> <Button Content="讀取PDF" Height="23" HorizontalAlignment="Left" Margin="151,0,0,20" Name="button4" VerticalAlignment="Bottom" Width="75" Click="btnRead_Click" /> <Label Content="Hello,Welcome to use" Height="198" HorizontalAlignment="Center" Margin="23,24,0,0" Name="label1" VerticalAlignment="Top" Width="431" ToolTip="Hello,Welcome to use" FontSize="18" FontWeight="Bold" HorizontalContentAlignment="Center" VerticalContentAlignment="Center" SnapsToDevicePixels="True" /> </Grid> </Window>
參考資料：
2. 其它資料
https://wenku.baidu.com/view/032eb56aaf1ffc4ffe47ac1d.html