根据维基百科PDF Interactive elements，将数据和PDF整合有两种可能性（这里也有规范的链接）：
由于兼容性问题，我会选择AcroForms。在这种情况下，我会使用XFDF，因为它是XML格式，因此更易于解析。我从未使用过Nitro，但是当您构建PDF表格时，通常会提供“保存”按钮，并为此按钮选择一个操作，“将表单发送/发布到服务器”并选择数据格式为XML，即XFDF。
这只在浏览器中查看 PDF 时有效。因此，典型的使用情况是：在服务器上有一个空白的 PDF 模板，在将 PDF 返回给用户之前，将数据混合到 PDF 中，用户在表单中输入数据（PDF 通过插件或在 Chrome 中本地打开），然后用户按下保存按钮，该按钮会将 XML 发送到服务器。下一次用户请求其 PDF 时，您将最新数据与模板再次混合。在这里查看完整的过程：http://itextpdf.com/book/chapter.php?id=9。该示例在运行时动态更新PDF表单。由于使用了iText，因此Java和C#之间没有区别。
请注意，早期版本的iText（Java版本为2.1.7及以下，C#版本为4.1.6及以下）是根据Mozilla Public License或LGPL分发的，而当前版本是根据Affero General Public License分发的。这解释了为什么仍在使用旧版本。
以下是在asp.net中生成PDF的代码示例：
下面是一个完整的代码示例，可以帮助您入门。 // 代码
using System;
using System.IO;
using System.Diagnostics;
using iTextSharp.text;
using iTextSharp.text.pdf;
public class iTextDemo
{
public static void Main()
{
Console.WriteLine("iText Demo");
// step 1: creation of a document-object
Document myDocument = new Document(PageSize.A4.Rotate());
try
{
// step 2:
// Now create a writer that listens to this doucment and writes the document to desired Stream.
PdfWriter.GetInstance(myDocument, new FileStream("Salman.pdf", FileMode.Create));
// step 3: Open the document now using
myDocument.Open();
// step 4: Now add some contents to the document
myDocument.Add(new Paragraph("First Pdf File made by Salman using iText"));
}
catch(DocumentException de)
{
Console.Error.WriteLine(de.Message);
}
catch(IOException ioe)
{
Console.Error.WriteLine(ioe.Message);
}
// step 5: Remember to close the documnet
myDocument.Close();
}
}
string MyVal = Request.Form["FieldName"];
生成PDF，请使用以下代码：
名称空间：
Using System.IO;
Using.iTextSharp.text;
Using.iTextSharp.text.pdf;
private void button1_Click(object sender, EventArgs e)
{
Document doc = new Document(iTextSharp.text.PageSize.LETTER, 10, 10, 42, 35);
PdfWriter writer = PdfWriter.GetInstance(doc, new FileStream(@"C:\Test.pdf", FileMode.Create));
doc.Open();
Paragraph paragraph = new Paragraph("Hi, \n This is xxx from yyy \n This is my pdf file");
doc.Add(paragraph);
doc.Close();
}
using iTextSharp.text;
using iTextSharp.text.pdf;
using System.IO;
using iTextSharp.text.pdf.draw;
Document document = new Document(PageSize.A4,43,43, 43, 43);
PdfWriter writer = PdfWriter.GetInstance(document, new FileStream(@"D:\abc\text.pdf", FileMode.Create));
PdfPCell cell = null;
PdfPTable table = null;
document.Open();
Chunk glue = new Chunk(new VerticalPositionMark());
Paragraph para = new Paragraph();
table = new PdfPTable(1);
table.TotalWidth = 340f;
table.LockedWidth = true;
table.SpacingBefore = 20f;
table.HorizontalAlignment = Element.ALIGN_CENTER;
table.AddCell(PhraseCell(new Phrase("SCHEME INSTALLMENT RECEIPT ", FontFactory.GetFont("Arial", 12,1)), PdfPCell.ALIGN_CENTER));
cell = PhraseCell(new Phrase(), PdfPCell.ALIGN_CENTER);
cell.Colspan = 1;
cell.PaddingBottom = 10f;
table.AddCell(cell);
document.Add(table);
Phrase ph1 = new Phrase();
Paragraph mm = new Paragraph();
ph1.Add(new Chunk(Environment.NewLine));
ph1.Add(new Chunk("Name : " + name,FontFactory.GetFont("Arial", 10,1)));
ph1.Add(glue);
ph1.Add(new Chunk("Bill No. : " + BillNo, FontFactory.GetFont("Arial", 10,1)));
ph1.Add(new Chunk(Environment.NewLine));
ph1.Add(new Chunk("Address : " + address, FontFactory.GetFont("Arial", 10,1)));
ph1.Add(glue);
ph1.Add(new Chunk("Bill Date : " + billDate, FontFactory.GetFont("Arial", 10,1)));
ph1.Add(new Chunk(Environment.NewLine));
ph1.Add(new Chunk("Mobile No. : " + mobile, FontFactory.GetFont("Arial", 10,1)));
ph1.Add(glue);
ph1.Add(new Chunk("Scheme No. : " + orderNo, FontFactory.GetFont("Arial", 10,1)));
mm.Add(ph1);
para.Add(mm);
document.Add(para);
table = new PdfPTable(3);
table.TotalWidth = 340f;
table.LockedWidth = true;
table.SpacingBefore = 20f;
table.HorizontalAlignment = Element.ALIGN_CENTER;
table.AddCell(PhraseCell(new Phrase("HSN Code ", FontFactory.GetFont("Arial", 10,1)), PdfPCell.ALIGN_CENTER));
table.AddCell(PhraseCell(new Phrase("No of Installment", FontFactory.GetFont("Arial", 10,1)), PdfPCell.ALIGN_CENTER));
table.AddCell(PhraseCell(new Phrase("Installment Amount", FontFactory.GetFont("Arial", 10,1)), PdfPCell.ALIGN_CENTER));
cell = PhraseCell(new Phrase(), PdfPCell.ALIGN_CENTER);
cell.Colspan = 3;
cell.PaddingBottom = 10f;
table.AddCell(cell);
table.AddCell(PhraseCell(new Phrase("7113", FontFactory.GetFont("Arial", 10,1)), PdfPCell.ALIGN_CENTER));
table.AddCell(PhraseCell(new Phrase(paidNo, FontFactory.GetFont("Arial", 10,1)), PdfPCell.ALIGN_CENTER));
table.AddCell(PhraseCell(new Phrase(paidAmount, FontFactory.GetFont("Arial", 10,1)), PdfPCell.ALIGN_CENTER));
cell = PhraseCell(new Phrase(), PdfPCell.ALIGN_CENTER);
cell.Colspan = 3;
cell.PaddingBottom = 10f;
table.AddCell(cell);
PdfContentByte contentByte = writer.DirectContent;
contentByte.MoveTo(45.0, 627.0);
contentByte.LineTo(550.0, 627.0);
document.Add(table);
Paragraph para1 = new Paragraph();
Phrase ph2 = new Phrase();
Paragraph mm1 = new Paragraph();
string amountWord = ConvertNumbertoWords(Convert.ToInt64(paidAmount));
ph2.Add(new Chunk(Environment.NewLine));
ph2.Add(new Chunk(Environment.NewLine));
ph2.Add(new Chunk(Environment.NewLine));
ph2.Add(new Chunk(amountWord + " Only", FontFactory.GetFont("Arial", 10,1)));
ph2.Add(new Chunk(Environment.NewLine));
ph2.Add(new Chunk("By Cash", FontFactory.GetFont("Arial", 10,1)));
ph2.Add(new Chunk(Environment.NewLine));
ph2.Add(new Chunk(paidAmount, FontFactory.GetFont("Arial", 10,1)));
mm1.Add(ph2);
para1.Add(mm1);
document.Add(para1);
Paragraph para3 = new Paragraph();
Phrase ph3 = new Phrase();
Paragraph mm3 = new Paragraph();
ph3.Add(new Chunk(Environment.NewLine));
ph3.Add(new Chunk("Credit Card Charges :", FontFactory.GetFont("Arial", 10,1)));
ph3.Add(new Chunk(Environment.NewLine));
ph3.Add(new Chunk("Customer Sign.", FontFactory.GetFont("Arial", 10,1)));
ph3.Add(glue);
ph3.Add(new Chunk("For Example", FontFactory.GetFont("Arial", 10,1)));
mm3.Add(ph3);
para3.Add(mm3);
document.Add(para3);
document.Close();