PdfPTable 作为 iTextSharp 中的标题-C#/.NET问题

PdfPTable as a header in iTextSharp(PdfPTable 作为 iTextSharp 中的标题)

本文介绍了PdfPTable 作为 iTextSharp 中的标题的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我需要一个包含大约 12 个单元格的表格来显示为标题.以下代码无法做到这一点.我知道 table2 没有 12 个单元格.在第二页上，只显示测试".我错过了什么?

I need a table with about 12 cells to display as a header. The following code fails to do this. I am aware table2 does not have 12 cells. On the second page, only "testing" is displayed. What am I missing?

提前致谢！

Document document = new Document();

        try
        {
            PdfWriter.GetInstance(document, new FileStream("TableTest.pdf", FileMode.Create));
            document.Open();

            PdfPTable table = new PdfPTable(1);
            table.WidthPercentage = 100;
            PdfPTable table2 = new PdfPTable(2);

            //logo
            PdfPCell cell2 = new PdfPCell(Image.GetInstance(@"C:path	ofile.gif"));
            cell2.Colspan = 2;
            table2.AddCell(cell2);

            //title
            cell2 = new PdfPCell(new Phrase("
TITLE TEXT", new Font(Font.HELVETICA, 16, Font.BOLD | Font.UNDERLINE)));
            cell2.HorizontalAlignment = Element.ALIGN_CENTER;
            cell2.Colspan = 2;
            table2.AddCell(cell2);

            PdfPCell cell = new PdfPCell(table2);
            table.HeaderRows = 1;
            table.AddCell(cell);
            table.AddCell(new PdfPCell(new Phrase("")));

            document.Add(table);

            document.Add(new Phrase("






































testing"));
        }
        catch (DocumentException de)
        {
            Console.Error.WriteLine(de.Message);
        }
        catch (IOException ioe)
        {
            Console.Error.WriteLine(ioe.Message);
        }

        document.Close();

推荐答案

Bingo！PdfPageEventHandler 类对我有用.

Bingo! PdfPageEventHandler class worked for me.

我使用 PdfPageEventHelper 覆盖 OnEndPage 方法:

I used the PdfPageEventHelper overriding the OnEndPage method:

class _events : PdfPageEventHelper
{
    public override void OnEndPage(PdfWriter writer, Document document)
    {
        PdfPTable table = new PdfPTable(1);
        //table.WidthPercentage = 100; //PdfPTable.writeselectedrows below didn't like this
        table.TotalWidth = document.PageSize.Width - document.LeftMargin - document.RightMargin; //this centers [table]
        PdfPTable table2 = new PdfPTable(2);

        //logo
        PdfPCell cell2 = new PdfPCell(Image.GetInstance(@"C:path	ofile.gif"));
        cell2.Colspan = 2;
        table2.AddCell(cell2);

        //title
        cell2 = new PdfPCell(new Phrase("
TITLE", new Font(Font.HELVETICA, 16, Font.BOLD | Font.UNDERLINE)));
        cell2.HorizontalAlignment = Element.ALIGN_CENTER;
        cell2.Colspan = 2;
        table2.AddCell(cell2);

        PdfPCell cell = new PdfPCell(table2);
        table.AddCell(cell);

        table.WriteSelectedRows(0, -1, document.LeftMargin, document.PageSize.Height - 36, writer.DirectContent);
    }
}

然后，构建 pdf

Document document = new Document(PageSize.A4, 36, 36, 36 + <height of table>, 36); // note height should be set here
_events e = new _events();
PdfWriter pw = PdfWriter.GetInstance(document, new FileStream("TableTest.pdf", FileMode.Create));
pw.PageEvent = e;
document.Open();

for(int i=0;i<100;i++)
{
    document.Add(new Phrase("TESTING
"));
}

document.Close();

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