C# 使用 iTextsharp 为 PDF 添加页眉和页脚
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/18996323/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
提示：将鼠标放在中文语句上可以显示对应的英文。显示中英文
时间：2020-08-10 13:50:26 来源:igfitidea点击:
Add Header and Footer for PDF using iTextsharp
提问by Anuya
How can I add header and footer for each page in the pdf.
如何为pdf中的每个页面添加页眉和页脚。
Headed will contain just a text Footer will contain a text and pagination for pdf (Page : 1 of 4)
Headed 将只包含一个文本页脚将包含一个文本和 pdf 分页（页面：1 of 4）
How is this possible ? I tried to add the below line, but header does not show up in pdf.
这怎么可能 ？我尝试添加以下行，但标题未显示在 pdf 中。
document.AddHeader("Header", "Header Text");
This the code I am using for generation PDF :
这是我用于生成 PDF 的代码：
protected void GeneratePDF_Click(object sender, EventArgs e)
{
DataTable dt = getData();
Response.ContentType = "application/pdf";
Response.AddHeader("content-disposition", "attachment;filename=Locations.pdf");
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Document document = new Document();
PdfWriter.GetInstance(document, Response.OutputStream);
document.Open();
iTextSharp.text.Font font5 = iTextSharp.text.FontFactory.GetFont(FontFactory.COURIER , 8);
PdfPTable table = new PdfPTable(dt.Columns.Count);
PdfPRow row = null;
float[] widths = new float[] { 6f, 6f, 2f, 4f, 2f };
table.SetWidths(widths);
table.WidthPercentage = 100;
int iCol = 0;
string colname = "";
PdfPCell cell = new PdfPCell(new Phrase("Locations"));
cell.Colspan = dt.Columns.Count;
foreach (DataColumn c in dt.Columns)
{
table.AddCell(new Phrase(c.ColumnName, font5));
}
foreach (DataRow r in dt.Rows)
{
if (dt.Rows.Count > 0)
{
table.AddCell(new Phrase(r[0].ToString(), font5));
table.AddCell(new Phrase(r[1].ToString(), font5));
table.AddCell(new Phrase(r[2].ToString(), font5));
table.AddCell(new Phrase(r[3].ToString(), font5));
table.AddCell(new Phrase(r[4].ToString(), font5));
}
}
document.Add(table);
document.Close();
Response.Write(document);
Response.End();
}
}
回答by Bruno Lowagie
We don't talk about iTextSharp anymore. You are using iText 5 for .NET. The current version is iText 7 for .NET.
我们不再谈论 iTextSharp。您正在使用 iText 5 for .NET。当前版本是 iText 7 for .NET。
Obsolete answer:
过时的答案：
The AddHeaderhas been deprecated a long time ago and has been removed from iTextSharp. Adding headers and footers is now done using page events. The examples are in Java, but you can find the C# port of the examples hereand here(scroll to the bottom of the page for links to the .csfiles).
在AddHeader已被弃用很久以前和iTextSharp的已被删除。添加页眉和页脚现在使用页面事件完成。这些示例使用 Java 编写，但您可以在此处和此处找到示例的 C# 端口（滚动到页面底部以获取.cs文件链接）。
Make sure you read the documentation. A common mistake by many developers have made before you, is adding content in the OnStartPage. You should only add content in the OnEndPage. It's also obvious that you need to add the content at absolute coordinates (for instance using ColumnText) and that you need to reserve sufficient space for the header and footer by defining the margins of your document correctly.
请务必阅读文档。许多开发人员在您之前犯的一个常见错误是在OnStartPage. 您应该只在OnEndPage. 很明显，您需要在绝对坐标处添加内容（例如使用ColumnText），并且您需要通过正确定义文档的边距为页眉和页脚保留足够的空间。
Updated answer:
更新的答案：
If you are new to iText, you should use iText 7 and use event handlers to add headers and footers. See chapter 3of the iText 7 Jump-Start Tutorial for .NET.
如果您不熟悉 iText，则应该使用 iText 7 并使用事件处理程序来添加页眉和页脚。请参阅适用于 .NET 的 iText 7 快速入门教程的第 3 章。
When you have a PdfDocumentin iText 7, you can add an event handler:
当您PdfDocument在 iText 7 中有一个时，您可以添加一个事件处理程序：
PdfDocument pdf = new PdfDocument(new PdfWriter(dest));
pdf.addEventHandler(PdfDocumentEvent.END_PAGE, new MyEventHandler());
This is an example of the hard wayto add text at an absolute position (using PdfCanvas):
这是在绝对位置添加文本的困难方法示例（使用PdfCanvas）：
protected internal class MyEventHandler : IEventHandler {
public virtual void HandleEvent(Event @event) {
PdfDocumentEvent docEvent = (PdfDocumentEvent)@event;
PdfDocument pdfDoc = docEvent.GetDocument();
PdfPage page = docEvent.GetPage();
int pageNumber = pdfDoc.GetPageNumber(page);
Rectangle pageSize = page.GetPageSize();
PdfCanvas pdfCanvas = new PdfCanvas(page.NewContentStreamBefore(), page.GetResources(), pdfDoc);
//Add header
pdfCanvas.BeginText()
.SetFontAndSize(C03E03_UFO.helvetica, 9)
.MoveText(pageSize.GetWidth() / 2 - 60, pageSize.GetTop() - 20)
.ShowText("THE TRUTH IS OUT THERE")
.MoveText(60, -pageSize.GetTop() + 30)
.ShowText(pageNumber.ToString())
.EndText();
pdfCanvas.release();
}
}
This is a slightly higher-level way, using Canvas:
这是一种稍微高级一点的方法，使用Canvas：
protected internal class MyEventHandler : IEventHandler {
public virtual void HandleEvent(Event @event) {
PdfDocumentEvent docEvent = (PdfDocumentEvent)@event;
PdfDocument pdfDoc = docEvent.GetDocument();
PdfPage page = docEvent.GetPage();
int pageNumber = pdfDoc.GetPageNumber(page);
Rectangle pageSize = page.GetPageSize();
PdfCanvas pdfCanvas = new PdfCanvas(page.NewContentStreamBefore(), page.GetResources(), pdfDoc);
//Add watermark
Canvas canvas = new Canvas(pdfCanvas, pdfDoc, page.getPageSize());
canvas.setFontColor(Color.WHITE);
canvas.setProperty(Property.FONT_SIZE, 60);
canvas.setProperty(Property.FONT, helveticaBold);
canvas.showTextAligned(new Paragraph("CONFIDENTIAL"),
298, 421, pdfDoc.getPageNumber(page),
TextAlignment.CENTER, VerticalAlignment.MIDDLE, 45);
pdfCanvas.release();
}
}
There are other ways to add content at absolute positions. They are described in the different iText books.
还有其他方法可以在绝对位置添加内容。它们在不同的iText 书籍中有所描述。
回答by Nilesh Thakkar
As already answered by @Bruno you need to use pageEvents.
正如@Bruno 已经回答的那样，您需要使用 pageEvents。
Please check out the sample code below:
请查看下面的示例代码：
private void CreatePDF()
{
string fileName = string.Empty;
DateTime fileCreationDatetime = DateTime.Now;
fileName = string.Format("{0}.pdf", fileCreationDatetime.ToString(@"yyyyMMdd") + "_" + fileCreationDatetime.ToString(@"HHmmss"));
string pdfPath = Server.MapPath(@"~\PDFs\") + fileName;
using (FileStream msReport = new FileStream(pdfPath, FileMode.Create))
{
//step 1
using (Document pdfDoc = new Document(PageSize.A4, 10f, 10f, 140f, 10f))
{
try
{
// step 2
PdfWriter pdfWriter = PdfWriter.GetInstance(pdfDoc, msReport);
pdfWriter.PageEvent = new Common.ITextEvents();
//open the stream
pdfDoc.Open();
for (int i = 0; i < 10; i++)
{
Paragraph para = new Paragraph("Hello world. Checking Header Footer", new Font(Font.FontFamily.HELVETICA, 22));
para.Alignment = Element.ALIGN_CENTER;
pdfDoc.Add(para);
pdfDoc.NewPage();
}
pdfDoc.Close();
}
catch (Exception ex)
{
//handle exception
}
finally
{
}
}
}
}
And create one class file named ITextEvents.cs and add following code:
并创建一个名为 ITextEvents.cs 的类文件并添加以下代码：
public class ITextEvents : PdfPageEventHelper
{
// This is the contentbyte object of the writer
PdfContentByte cb;
// we will put the final number of pages in a template
PdfTemplate headerTemplate, footerTemplate;
// this is the BaseFont we are going to use for the header / footer
BaseFont bf = null;
// This keeps track of the creation time
DateTime PrintTime = DateTime.Now;
#region Fields
private string _header;
#endregion
#region Properties
public string Header
{
get { return _header; }
set { _header = value; }
}
#endregion
public override void OnOpenDocument(PdfWriter writer, Document document)
{
try
{
PrintTime = DateTime.Now;
bf = BaseFont.CreateFont(BaseFont.HELVETICA, BaseFont.CP1252, BaseFont.NOT_EMBEDDED);
cb = writer.DirectContent;
headerTemplate = cb.CreateTemplate(100, 100);
footerTemplate = cb.CreateTemplate(50, 50);
}
catch (DocumentException de)
{
}
catch (System.IO.IOException ioe)
{
}
}
public override void OnEndPage(iTextSharp.text.pdf.PdfWriter writer, iTextSharp.text.Document document)
{
base.OnEndPage(writer, document);
iTextSharp.text.Font baseFontNormal = new iTextSharp.text.Font(iTextSharp.text.Font.FontFamily.HELVETICA, 12f, iTextSharp.text.Font.NORMAL, iTextSharp.text.BaseColor.BLACK);
iTextSharp.text.Font baseFontBig = new iTextSharp.text.Font(iTextSharp.text.Font.FontFamily.HELVETICA, 12f, iTextSharp.text.Font.BOLD, iTextSharp.text.BaseColor.BLACK);
Phrase p1Header = new Phrase("Sample Header Here", baseFontNormal);
//Create PdfTable object
PdfPTable pdfTab = new PdfPTable(3);
//We will have to create separate cells to include image logo and 2 separate strings
//Row 1
PdfPCell pdfCell1 = new PdfPCell();
PdfPCell pdfCell2 = new PdfPCell(p1Header);
PdfPCell pdfCell3 = new PdfPCell();
String text = "Page " + writer.PageNumber + " of ";
//Add paging to header
{
cb.BeginText();
cb.SetFontAndSize(bf, 12);
cb.SetTextMatrix(document.PageSize.GetRight(200), document.PageSize.GetTop(45));
cb.ShowText(text);
cb.EndText();
float len = bf.GetWidthPoint(text, 12);
//Adds "12" in Page 1 of 12
cb.AddTemplate(headerTemplate, document.PageSize.GetRight(200) + len, document.PageSize.GetTop(45));
}
//Add paging to footer
{
cb.BeginText();
cb.SetFontAndSize(bf, 12);
cb.SetTextMatrix(document.PageSize.GetRight(180), document.PageSize.GetBottom(30));
cb.ShowText(text);
cb.EndText();
float len = bf.GetWidthPoint(text, 12);
cb.AddTemplate(footerTemplate, document.PageSize.GetRight(180) + len, document.PageSize.GetBottom(30));
}
//Row 2
PdfPCell pdfCell4 = new PdfPCell(new Phrase("Sub Header Description", baseFontNormal));
//Row 3
PdfPCell pdfCell5 = new PdfPCell(new Phrase("Date:" + PrintTime.ToShortDateString(), baseFontBig));
PdfPCell pdfCell6 = new PdfPCell();
PdfPCell pdfCell7 = new PdfPCell(new Phrase("TIME:" + string.Format("{0:t}", DateTime.Now), baseFontBig));
//set the alignment of all three cells and set border to 0
pdfCell1.HorizontalAlignment = Element.ALIGN_CENTER;
pdfCell2.HorizontalAlignment = Element.ALIGN_CENTER;
pdfCell3.HorizontalAlignment = Element.ALIGN_CENTER;
pdfCell4.HorizontalAlignment = Element.ALIGN_CENTER;
pdfCell5.HorizontalAlignment = Element.ALIGN_CENTER;
pdfCell6.HorizontalAlignment = Element.ALIGN_CENTER;
pdfCell7.HorizontalAlignment = Element.ALIGN_CENTER;
pdfCell2.VerticalAlignment = Element.ALIGN_BOTTOM;
pdfCell3.VerticalAlignment = Element.ALIGN_MIDDLE;
pdfCell4.VerticalAlignment = Element.ALIGN_TOP;
pdfCell5.VerticalAlignment = Element.ALIGN_MIDDLE;
pdfCell6.VerticalAlignment = Element.ALIGN_MIDDLE;
pdfCell7.VerticalAlignment = Element.ALIGN_MIDDLE;
pdfCell4.Colspan = 3;
pdfCell1.Border = 0;
pdfCell2.Border = 0;
pdfCell3.Border = 0;
pdfCell4.Border = 0;
pdfCell5.Border = 0;
pdfCell6.Border = 0;
pdfCell7.Border = 0;
//add all three cells into PdfTable
pdfTab.AddCell(pdfCell1);
pdfTab.AddCell(pdfCell2);
pdfTab.AddCell(pdfCell3);
pdfTab.AddCell(pdfCell4);
pdfTab.AddCell(pdfCell5);
pdfTab.AddCell(pdfCell6);
pdfTab.AddCell(pdfCell7);
pdfTab.TotalWidth = document.PageSize.Width - 80f;
pdfTab.WidthPercentage = 70;
//pdfTab.HorizontalAlignment = Element.ALIGN_CENTER;
//call WriteSelectedRows of PdfTable. This writes rows from PdfWriter in PdfTable
//first param is start row. -1 indicates there is no end row and all the rows to be included to write
//Third and fourth param is x and y position to start writing
pdfTab.WriteSelectedRows(0, -1, 40, document.PageSize.Height - 30, writer.DirectContent);
//set pdfContent value
//Move the pointer and draw line to separate header section from rest of page
cb.MoveTo(40, document.PageSize.Height - 100);
cb.LineTo(document.PageSize.Width - 40, document.PageSize.Height - 100);
cb.Stroke();
//Move the pointer and draw line to separate footer section from rest of page
cb.MoveTo(40, document.PageSize.GetBottom(50) );
cb.LineTo(document.PageSize.Width - 40, document.PageSize.GetBottom(50));
cb.Stroke();
}
public override void OnCloseDocument(PdfWriter writer, Document document)
{
base.OnCloseDocument(writer, document);
headerTemplate.BeginText();
headerTemplate.SetFontAndSize(bf, 12);
headerTemplate.SetTextMatrix(0, 0);
headerTemplate.ShowText((writer.PageNumber - 1).ToString());
headerTemplate.EndText();
footerTemplate.BeginText();
footerTemplate.SetFontAndSize(bf, 12);
footerTemplate.SetTextMatrix(0, 0);
footerTemplate.ShowText((writer.PageNumber - 1).ToString());
footerTemplate.EndText();
}
}
I hope it helps!
我希望它有帮助！
回答by Mohammad Golahi
Easy codes that work successfully:
成功运行的简单代码：
protected void Page_Load(object sender, EventArgs e)
{
.
.
using (MemoryStream ms = new MemoryStream())
{
.
.
iTextSharp.text.Document doc = new iTextSharp.text.Document(iTextSharp.text.PageSize.A4, 36, 36, 54, 54);
iTextSharp.text.pdf.PdfWriter writer = iTextSharp.text.pdf.PdfWriter.GetInstance(doc, ms);
writer.PageEvent = new HeaderFooter();
doc.Open();
.
.
// make your document content..
.
.
doc.Close();
writer.Close();
// output
Response.ContentType = "application/pdf;";
Response.AddHeader("Content-Disposition", "attachment; filename=clientfilename.pdf");
byte[] pdf = ms.ToArray();
Response.OutputStream.Write(pdf, 0, pdf.Length);
}
.
.
.
}
class HeaderFooter : PdfPageEventHelper
{
public override void OnEndPage(PdfWriter writer, Document document)
{
// Make your table header using PdfPTable and name that tblHeader
.
.
tblHeader.WriteSelectedRows(0, -1, page.Left + document.LeftMargin, page.Top, writer.DirectContent);
.
.
// Make your table footer using PdfPTable and name that tblFooter
.
.
tblFooter.WriteSelectedRows(0, -1, page.Left + document.LeftMargin, writer.PageSize.GetBottom(document.BottomMargin), writer.DirectContent);
}
}
回答by Alvaro Pati?o
Just add this line before opening the document (must be before):
只需在打开文档之前添加这一行（必须在之前）：
document.Header = new HeaderFooter(new Phrase("Header Text"), false);
document.Open();
回答by Serguei Fedorov
The answers to this question, while they are correct, are very unnecessarily complicated. It doesn't take that much code for text to show up in the header/footer. Here is a simple example of adding text to the header/footer.
这个问题的答案虽然是正确的，但过于复杂。在页眉/页脚中显示文本不需要那么多代码。这是向页眉/页脚添加文本的简单示例。
The current version of iTextSharp works by implementing a callback class which is defined by the IPdfPageEventinterface. From what I understand, it's not a good idea to add things during the OnStartPagemethod, so instead I will be using the OnEndPagepage method. The events are triggered depending on what is happening to the PdfWriter
iTextSharp 的当前版本通过实现由IPdfPageEvent接口定义的回调类来工作。据我了解，在OnStartPage方法中添加东西不是一个好主意，所以我将使用OnEndPage页面方法。事件的触发取决于发生在PdfWriter
First, create a class which implements IPdfPageEvent. In the:
首先，创建一个实现IPdfPageEvent. 在里面：
public void OnEndPage(PdfWriter writer, Document document)
function, obtain the PdfContentByteobject by calling
函数，PdfContentByte通过调用获取对象
PdfContentByte cb = writer.DirectContent;
Now you can add text very easily:
现在您可以非常轻松地添加文本：
ColumnText ct = new ColumnText(cb);
cb.BeginText();
cb.SetFontAndSize(BaseFont.CreateFont(BaseFont.TIMES_ROMAN, BaseFont.CP1252, BaseFont.NOT_EMBEDDED), 12.0f);
//Note, (0,0) in this case is at the bottom of the document
cb.SetTextMatrix(document.LeftMargin, document.BottomMargin);
cb.ShowText(String.Format("{0} {1}", "Testing Text", "Like this"));
cb.EndText();
So the full for the OnEndPagefunction will be:
因此，该OnEndPage功能的完整内容将是：
public void OnEndPage(PdfWriter writer, Document document)
{
PdfContentByte cb = writer.DirectContent;
ColumnText ct = new ColumnText(cb);
cb.BeginText();
cb.SetFontAndSize(BaseFont.CreateFont(BaseFont.TIMES_ROMAN, BaseFont.CP1252, BaseFont.NOT_EMBEDDED), 12.0f);
cb.SetTextMatrix(document.LeftMargin, document.BottomMargin);
cb.ShowText(String.Format("{0} {1}", "Testing Text", "Like this"));
cb.EndText();
}
This will show up at the bottom of your document. One last thing. Don't forget to assign the IPdfPageEventlike this:
这将显示在您的文档底部。最后一件事。不要忘记分配IPdfPageEvent这样的：
writter.PageEvent = new PDFEvents();
To the PdfWriterwritter object
到PdfWriterwritter对象
For the headerit is very similar. Just flip the SetTextMatrixy coordinate:
对于标题，它非常相似。只需翻转SetTextMatrixy 坐标：
cb.SetTextMatrix(document.LeftMargin, document.PageSize.Height - document.TopMargin);
回答by alpha pecap
For iTextSharp 4.1.6, the last version of iTextSharp that was licensed as LGPL, the solution provided by Alvaro Pati?ois both simple and effective.
对于 iTextSharp 4.1.6，作为LGPL许可的 iTextSharp 的最后一个版本，Alvaro Pati?o提供的解决方案既简单又有效。
Because documentation is somewhat scarse I'd like to extend his answer with this code snippet that can be used to change the appearance of the header and footer. By default they have a rather large font-size and a thick border, which many people will want to change.
因为文档有点稀缺，我想用这个可用于更改页眉和页脚外观的代码片段来扩展他的答案。默认情况下，它们有一个相当大的字体大小和一个粗边框，许多人想要改变。
// Parameters passed on to the function that creates the PDF
String headerText = "Your header text";
String footerText = "Page";
// Define a font and font-size in points (plus f for float) and pick a color
// This one is for both header and footer but you can also create seperate ones
Font fontHeaderFooter = FontFactory.GetFont("arial", 8f);
fontHeaderFooter.Color = Color.GRAY;
// Apply the font to the headerText and create a Phrase with the result
Chunk chkHeader = new Chunk(headerText, fontHeaderFooter);
Phrase p1 = new Phrase(chkHeader);
// create a HeaderFooter element for the header using the Phrase
// The boolean turns numbering on or off
HeaderFooter header = new HeaderFooter(p1, false);
// Remove the border that is set by default
header.Border = Rectangle.NO_BORDER;
// Align the text: 0 is left, 1 center and 2 right.
header.Alignment = 1;
// add the header to the document
document.Header = header;
// The footer is created in an similar way
// If you want to use numbering like in this example, add a whitespace to the
// text because by default there's no space in between them
if (footerText.Substring(footerText.Length - 1) != " ") footerText += " ";
Chunk chkFooter = new Chunk(footerText, fontHeaderFooter);
Phrase p2 = new Phrase(chkFooter);
// Turn on numbering by setting the boolean to true
HeaderFooter footer = new HeaderFooter(p2, true);
footer.Border = Rectangle.NO_BORDER;
footer.Alignment = 1;
document.Footer = footer;
// Open the Document for writing and continue creating its content
document.Open();
For more info check Creating PDFs with iTextSharpand iTextSharp - Adding Text with Chunks, Phrases and Paragraphs. The source code on GitHubmay also be useful.
有关更多信息，请查看使用 iTextSharp和iTextSharp创建 PDF - 添加带有块、短语和段落的文本。GitHub 上的源代码也可能有用。
回答by Woody
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using iTextSharp;
using iTextSharp.text;
using iTextSharp.text.pdf;
using DataLayer;
namespace DataMngt.MyCode
{
public class HeaderFooter : PdfPageEventHelper
{
#region Startup_Stuff
private string[] _headerLines;
private string _footerLine;
private DefineFont _boldFont;
private DefineFont _normalFont;
private iTextSharp.text.Font fontTxtBold;
private iTextSharp.text.Font fontTxtRegular;
private int _fontPointSize = 0;
private bool hasFooter = false;
private bool hasHeader = false;
private int _headerWidth = 0;
private int _headerHeight = 0;
private int _footerWidth = 0;
private int _footerHeight = 0;
private int _leftMargin = 0;
private int _rightMargin = 0;
private int _topMargin = 0;
private int _bottomMargin = 0;
private PageNumbers NumberSettings;
private DateTime runTime = DateTime.Now;
public enum PageNumbers
{
None,
HeaderPlacement,
FooterPlacement
}
// This is the contentbyte object of the writer
PdfContentByte cb;
PdfTemplate headerTemplate;
PdfTemplate footerTemplate;
public string[] headerLines
{
get
{
return _headerLines;
}
set
{
_headerLines = value;
hasHeader = true;
}
}
public string footerLine
{
get
{
return _footerLine;
}
set
{
_footerLine = value;
hasFooter = true;
}
}
public DefineFont boldFont
{
get
{
return _boldFont;
}
set
{
_boldFont = value;
}
}
public DefineFont normalFont
{
get
{
return _normalFont;
}
set
{
_normalFont = value;
}
}
public int fontPointSize
{
get
{
return _fontPointSize;
}
set
{
_fontPointSize = value;
}
}
public int leftMargin
{
get
{
return _leftMargin;
}
set
{
_leftMargin = value;
}
}
public int rightMargin
{
get
{
return _rightMargin;
}
set
{
_rightMargin = value;
}
}
public int topMargin
{
get
{
return _topMargin;
}
set
{
_topMargin = value;
}
}
public int bottomMargin
{
get
{
return _bottomMargin;
}
set
{
_bottomMargin = value;
}
}
public int headerheight
{
get
{
return _headerHeight;
}
}
public int footerHeight
{
get
{
return _footerHeight;
}
}
public PageNumbers PageNumberSettings
{
get
{
return NumberSettings;
}
set
{
NumberSettings = value;
}
}
#endregion
#region Write_Headers_Footers
public override void OnEndPage(PdfWriter writer, Document document)
{
if (hasHeader)
{
// left side is the string array passed in
// right side is a built in string array (0 = date, 1 = time, 2(optional) = page)
float[] widths = new float[2] { 90f, 10f };
PdfPTable hdrTable = new PdfPTable(2);
hdrTable.TotalWidth = document.PageSize.Width - (_leftMargin + _rightMargin);
hdrTable.WidthPercentage = 95;
hdrTable.SetWidths(widths);
hdrTable.LockedWidth = true;
for (int hdrIdx = 0; hdrIdx < (_headerLines.Length < 2 ? 2 : _headerLines.Length); hdrIdx ++)
{
string leftLine = (hdrIdx < _headerLines.Length ? _headerLines[hdrIdx] : string.Empty);
Paragraph leftPara = new Paragraph(5, leftLine, (hdrIdx == 0 ? fontTxtBold : fontTxtRegular));
switch (hdrIdx)
{
case 0:
{
leftPara.Font.Size = _fontPointSize;
PdfPCell leftCell = new PdfPCell(leftPara);
leftCell.HorizontalAlignment = Element.ALIGN_LEFT;
leftCell.Border = 0;
string rightLine = string.Format(SalesPlanResources.datePara, runTime.ToString(SalesPlanResources.datePrintMask));
Paragraph rightPara = new Paragraph(5, rightLine, (hdrIdx == 0 ? fontTxtBold : fontTxtRegular));
rightPara.Font.Size = _fontPointSize;
PdfPCell rightCell = new PdfPCell(rightPara);
rightCell.HorizontalAlignment = Element.ALIGN_LEFT;
rightCell.Border = 0;
hdrTable.AddCell(leftCell);
hdrTable.AddCell(rightCell);
break;
}
case 1:
{
leftPara.Font.Size = _fontPointSize;
PdfPCell leftCell = new PdfPCell(leftPara);
leftCell.HorizontalAlignment = Element.ALIGN_LEFT;
leftCell.Border = 0;
string rightLine = string.Format(SalesPlanResources.timePara, runTime.ToString(SalesPlanResources.timePrintMask));
Paragraph rightPara = new Paragraph(5, rightLine, (hdrIdx == 0 ? fontTxtBold : fontTxtRegular));
rightPara.Font.Size = _fontPointSize;
PdfPCell rightCell = new PdfPCell(rightPara);
rightCell.HorizontalAlignment = Element.ALIGN_LEFT;
rightCell.Border = 0;
hdrTable.AddCell(leftCell);
hdrTable.AddCell(rightCell);
break;
}
case 2:
{
leftPara.Font.Size = _fontPointSize;
PdfPCell leftCell = new PdfPCell(leftPara);
leftCell.HorizontalAlignment = Element.ALIGN_LEFT;
leftCell.Border = 0;
string rightLine;
if (NumberSettings == PageNumbers.HeaderPlacement)
{
rightLine = string.Concat(SalesPlanResources.pagePara, writer.PageNumber.ToString());
}
else
{
rightLine = string.Empty;
}
Paragraph rightPara = new Paragraph(5, rightLine, fontTxtRegular);
rightPara.Font.Size = _fontPointSize;
PdfPCell rightCell = new PdfPCell(rightPara);
rightCell.HorizontalAlignment = Element.ALIGN_LEFT;
rightCell.Border = 0;
hdrTable.AddCell(leftCell);
hdrTable.AddCell(rightCell);
break;
}
default:
{
leftPara.Font.Size = _fontPointSize;
PdfPCell leftCell = new PdfPCell(leftPara);
leftCell.HorizontalAlignment = Element.ALIGN_LEFT;
leftCell.Border = 0;
leftCell.Colspan = 2;
hdrTable.AddCell(leftCell);
break;
}
}
}
hdrTable.WriteSelectedRows(0, -1, _leftMargin, document.PageSize.Height - _topMargin, writer.DirectContent);
//Move the pointer and draw line to separate header section from rest of page
cb.MoveTo(_leftMargin, document.Top + 10);
cb.LineTo(document.PageSize.Width - _leftMargin, document.Top + 10);
cb.Stroke();
}
if (hasFooter)
{
// footer line is the width of the page so it is centered horizontally
PdfPTable ftrTable = new PdfPTable(1);
float[] widths = new float[1] {100 };
ftrTable.TotalWidth = document.PageSize.Width - 10;
ftrTable.WidthPercentage = 95;
ftrTable.SetWidths(widths);
string OneLine;
if (NumberSettings == PageNumbers.FooterPlacement)
{
OneLine = string.Concat(_footerLine, writer.PageNumber.ToString());
}
else
{
OneLine = _footerLine;
}
Paragraph onePara = new Paragraph(0, OneLine, fontTxtRegular);
onePara.Font.Size = _fontPointSize;
PdfPCell oneCell = new PdfPCell(onePara);
oneCell.HorizontalAlignment = Element.ALIGN_CENTER;
oneCell.Border = 0;
ftrTable.AddCell(oneCell);
ftrTable.WriteSelectedRows(0, -1, _leftMargin, (_footerHeight), writer.DirectContent);
//Move the pointer and draw line to separate footer section from rest of page
cb.MoveTo(_leftMargin, document.PageSize.GetBottom(_footerHeight + 2));
cb.LineTo(document.PageSize.Width - _leftMargin, document.PageSize.GetBottom(_footerHeight + 2));
cb.Stroke();
}
}
#endregion
#region Setup_Headers_Footers_Happens_here
public override void OnOpenDocument(PdfWriter writer, Document document)
{
// create the fonts that are to be used
// first the hightlight or Bold font
fontTxtBold = FontFactory.GetFont(_boldFont.fontFamily, _boldFont.fontSize, _boldFont.foreColor);
if (_boldFont.isBold)
{
fontTxtBold.SetStyle(Font.BOLD);
}
if (_boldFont.isItalic)
{
fontTxtBold.SetStyle(Font.ITALIC);
}
if (_boldFont.isUnderlined)
{
fontTxtBold.SetStyle(Font.UNDERLINE);
}
// next the normal font
fontTxtRegular = FontFactory.GetFont(_normalFont.fontFamily, _normalFont.fontSize, _normalFont.foreColor);
if (_normalFont.isBold)
{
fontTxtRegular.SetStyle(Font.BOLD);
}
if (_normalFont.isItalic)
{
fontTxtRegular.SetStyle(Font.ITALIC);
}
if (_normalFont.isUnderlined)
{
fontTxtRegular.SetStyle(Font.UNDERLINE);
}
// now build the header and footer templates
try
{
float pageHeight = document.PageSize.Height;
float pageWidth = document.PageSize.Width;
_headerWidth = (int)pageWidth - ((int)_rightMargin + (int)_leftMargin);
_footerWidth = _headerWidth;
if (hasHeader)
{
// i basically dummy build the headers so i can trial fit them and see how much space they take.
float[] widths = new float[1] { 90f };
PdfPTable hdrTable = new PdfPTable(1);
hdrTable.TotalWidth = document.PageSize.Width - (_leftMargin + _rightMargin);
hdrTable.WidthPercentage = 95;
hdrTable.SetWidths(widths);
hdrTable.LockedWidth = true;
_headerHeight = 0;
for (int hdrIdx = 0; hdrIdx < (_headerLines.Length < 2 ? 2 : _headerLines.Length); hdrIdx++)
{
Paragraph hdrPara = new Paragraph(5, hdrIdx > _headerLines.Length - 1 ? string.Empty : _headerLines[hdrIdx], (hdrIdx > 0 ? fontTxtRegular : fontTxtBold));
PdfPCell hdrCell = new PdfPCell(hdrPara);
hdrCell.HorizontalAlignment = Element.ALIGN_LEFT;
hdrCell.Border = 0;
hdrTable.AddCell(hdrCell);
_headerHeight = _headerHeight + (int)hdrTable.GetRowHeight(hdrIdx);
}
// iTextSharp underestimates the size of each line so fudge it a little
// this gives me 3 extra lines to play with on the spacing
_headerHeight = _headerHeight + (_fontPointSize * 3);
}
if (hasFooter)
{
_footerHeight = (_fontPointSize * 2);
}
document.SetMargins(_leftMargin, _rightMargin, (_topMargin + _headerHeight), _footerHeight);
cb = writer.DirectContent;
if (hasHeader)
{
headerTemplate = cb.CreateTemplate(_headerWidth, _headerHeight);
}
if (hasFooter)
{
footerTemplate = cb.CreateTemplate(_footerWidth, _footerHeight);
}
}
catch (DocumentException de)
{
}
catch (System.IO.IOException ioe)
{
}
}
#endregion
#region Cleanup_Doc_Processing
public override void OnCloseDocument(PdfWriter writer, Document document)
{
base.OnCloseDocument(writer, document);
if (hasHeader)
{
headerTemplate.BeginText();
headerTemplate.SetTextMatrix(0, 0);
if (NumberSettings == PageNumbers.HeaderPlacement)
{
}
headerTemplate.EndText();
}
if (hasFooter)
{
footerTemplate.BeginText();
footerTemplate.SetTextMatrix(0, 0);
if (NumberSettings == PageNumbers.FooterPlacement)
{
}
footerTemplate.EndText();
}
}
#endregion
}
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using iTextSharp;
using iTextSharp.text;
using iTextSharp.text.pdf;
namespace DataMngt.MyCode
{
// used to define the fonts passed into the header and footer class
public struct DefineFont
{
public string fontFamily { get; set; }
public int fontSize { get; set; }
public bool isBold { get; set; }
public bool isItalic { get; set; }
public bool isUnderlined { get; set; }
public BaseColor foreColor { get; set; }
}
}
To Use:
使用：
Document pdfDoc = new Document(PageSize.LEGAL.Rotate(), 10, 10, 25, 25);
System.IO.MemoryStream mStream = new System.IO.MemoryStream();
PdfWriter writer = PdfWriter.GetInstance(pdfDoc, mStream);
MyCode.HeaderFooter headers = new MyCode.HeaderFooter();
writer.PageEvent = headers;
.. .. Build the string array for the headers ...
.. .. 为标题构建字符串数组...
DefineFont passFont = new DefineFont();
// always set this to the largest font used
headers.fontPointSize = 8;
// set up the highlight or bold font
passFont.fontFamily = "Helvetica";
passFont.fontSize = 8;
passFont.isBold = true;
passFont.isItalic = false;
passFont.isUnderlined = false;
passFont.foreColor = BaseColor.BLACK;
headers.boldFont = passFont;
// now setup the normal text font
passFont.fontSize = 7;
passFont.isBold = false;
headers.normalFont = passFont;
headers.leftMargin = 10;
headers.bottomMargin = 25;
headers.rightMargin = 10;
headers.topMargin = 25;
headers.PageNumberSettings = HeaderFooter.PageNumbers.FooterPlacement;
headers.footerLine = "Page";
headers.headerLines = parmLines.ToArray();
pdfDoc.SetMargins(headers.leftMargin, headers.rightMargin, headers.topMargin + headers.headerheight, headers.bottomMargin + headers.footerHeight);
pdfDoc.Open();
// the new page is necessary due to a bug in in the current version of itextsharp
pdfDoc.NewPage();
... now your headers and footer will be handled automatically
...现在您的页眉和页脚将被自动处理
回答by Yats_Bhavsar
pdfDoc.Open();
Paragraph para = new Paragraph("Hello World", new Font(Font.FontFamily.HELVETICA, 22));
para.Alignment = Element.ALIGN_CENTER;
pdfDoc.Add(para);
pdfDoc.Add(new Paragraph("\r\n"));
htmlparser.Parse(sr);
pdfDoc.Close();
回答by D J
This link will help you out completely(the Shortestand Most Elegantway):
此链接将完全帮助您（最短和最优雅的方式）：
PdfPTable tbheader = new PdfPTable(3);
tbheader.TotalWidth = document.PageSize.Width - document.LeftMargin - document.RightMargin;
tbheader.DefaultCell.Border = 0;
tbheader.AddCell(new Paragraph());
tbheader.AddCell(new Paragraph());
var _cell2 = new PdfPCell(new Paragraph("This is my header", arial_italic));
_cell2.HorizontalAlignment = Element.ALIGN_RIGHT;
_cell2.Border = 0;
tbheader.AddCell(_cell2);
float[] widths = new float[] { 20f, 20f, 60f };
tbheader.SetWidths(widths);
tbheader.WriteSelectedRows(0, -1, document.LeftMargin, writer.PageSize.GetTop(document.TopMargin), writer.DirectContent);
PdfPTable tbfooter = new PdfPTable(3);
tbfooter.TotalWidth = document.PageSize.Width - document.LeftMargin - document.RightMargin;
tbfooter.DefaultCell.Border = 0;
tbfooter.AddCell(new Paragraph());
tbfooter.AddCell(new Paragraph());
var _cell2 = new PdfPCell(new Paragraph("This is my footer", arial_italic));
_cell2.HorizontalAlignment = Element.ALIGN_RIGHT;
_cell2.Border = 0;
tbfooter.AddCell(_cell2);
tbfooter.AddCell(new Paragraph());
tbfooter.AddCell(new Paragraph());
var _celly = new PdfPCell(new Paragraph(writer.PageNumber.ToString()));//For page no.
_celly.HorizontalAlignment = Element.ALIGN_RIGHT;
_celly.Border = 0;
tbfooter.AddCell(_celly);
float[] widths1 = new float[] { 20f, 20f, 60f };
tbfooter.SetWidths(widths1);
tbfooter.WriteSelectedRows(0, -1, document.LeftMargin, writer.PageSize.GetBottom(document.BottomMargin), writer.DirectContent);
