使用带有rowspan和colspan的c#在asp.net中创建PDF

Question

我在 c# asp.net 中使用 iTextSharp 创建 PDF 文档以显示文本框值。 pdf创建成功。但问题是，我以表格格式显示值。我想做行跨度和列跨度。请任何人帮助我..

         PdfWriter.GetInstance(pdfDoc, System.Web.HttpContext.Current.Response.OutputStream);
         pdfDoc.Open();
         //Set Font Properties for PDF File
         Font fnt = FontFactory.GetFont("Times New Roman", 14);
         PdfPTable PdfTable = new PdfPTable(2);
         PdfPCell Cell = new PdfPCell();
         PdfTable.TotalWidth = 600f;
         float[] widths = new float[] { 4f, 8f };
         PdfTable.SetWidths(widths);

         PdfPCell cell=new PdfPCell(new Phrase("MOM TABLE HEADER"));
         cell.Rowspan=2;   // this not working
         PdfTable.AddCell("Meeting By");
         PdfTable.AddCell(txtheld.Text);

Answer 1

我认为您没有在表格中添加行跨单元格，这就是您遇到问题的原因。我已经尝试了以下代码及其按预期工作：

 protected void btnExport_Click(object sender, EventArgs e)
    {
        FileStream fs = new FileStream("C://test1.pdf", FileMode.Create, FileAccess.Write, FileShare.None);

        try
        {


            Document pdfDoc = new Document();
            PdfWriter.GetInstance(pdfDoc, fs);
            pdfDoc.Open();
            //Set Font Properties for PDF File
            Font fnt = FontFactory.GetFont("Times New Roman", 14);
            PdfPTable PdfTable = new PdfPTable(2);
            PdfPCell Cell = new PdfPCell();
            PdfTable.TotalWidth = 600f;
            float[] widths = new float[] { 4f, 8f };
            PdfTable.SetWidths(widths);


            PdfPCell cell = new PdfPCell(new Phrase("MOM TABLE HEADER"));
            cell.Rowspan = 2;   // this not working
            PdfTable.AddCell(cell);
            PdfTable.AddCell("Meeting By");
            PdfTable.AddCell("test1");

            pdfDoc.Add(PdfTable);

            pdfDoc.Close();
        }
        catch
        {
        }
        finally
        {
            fs.Close();
        }
    }

Answer 2

如果您需要创建包含 rowspan 和 colspan 的表格，您可以使用我们的 PDFFlow 库，我们有许多功能可以让您自定义表格。也许这对你来说会容易得多。这就是它的工作原理：

    DocumentBuilder.New()
    .AddSection()
        .AddParagraph("Table with colspan and rowspan:")
            .SetBold().SetMarginBottom(5)
    .ToSection()
        .AddTable()
            .SetWidth(300)
            .AddColumnToTable().AddColumnToTable()
            .AddColumnToTable().AddColumnToTable()
            .AddRow()
                .SetBackColor(Color.FromRgba(0, 0.69, 0.94, 1)).SetBold()
                .AddCell("Product")
                    .SetRowSpan(2)
                    .SetVerticalAlignment(VerticalAlignment.Center)
            .ToRow()
                .AddCell("Month")
                    .SetColSpan(3)
                    .SetHorizontalAlignment(HorizontalAlignment.Center)
        .ToTable()
            .AddRow()
                    .SetBackColor(Color.FromRgba(0, 0.69, 0.94, 1)).SetBold()
.SetHorizontalAlignment(HorizontalAlignment.Center)
                    .AddCellToRow().AddCellToRow("January")
                    .AddCellToRow("February").AddCellToRow("March")
            .ToTable()
                .AddRow()
                    .AddCell()
                        .SetHorizontalAlignment(HorizontalAlignment.Left)
                        .AddParagraphToCell("Product 1")
                .ToRow()
                    .SetHorizontalAlignment(HorizontalAlignment.Center)
                    .AddCellToRow("100").AddCellToRow("115").AddCellToRow("103")
            .ToTable()
                .AddRow()
                    .AddCell()
                        .SetHorizontalAlignment(HorizontalAlignment.Left)
                        .AddParagraphToCell("Product 2")
                .ToRow()
                    .SetHorizontalAlignment(HorizontalAlignment.Center)
                    .AddCellToRow("200").AddCellToRow("204").AddCellToRow("207")
            .ToTable()
                .AddRow()
                    .SetBackColor(Color.FromRgba(0, 0.69, 0.94, 1)).SetBold()
                    .AddCellToRow("Total")
                    .AddCell("929")
                        .SetColSpan(3)
                        .SetHorizontalAlignment(HorizontalAlignment.Right)
    .ToDocument().Build("Table.pdf");

以上代码sn -p 生成Table.pdf 文档，其中包含以下table

如您所见，您可以设置单元格跨越的列数或行数。您还可以单独自定义每一行和每一列，例如，通过定义单元格的字体和文本对齐方式或设置所需的背景颜色。库中的方法名称简单明了，因此很容易找到您要实现的功能。

要查看更多示例，请浏览我们的真实文档samples。您可以按照随附文章中描述的步骤复制这些示例或创建类似的文档。我们的库对非商业和开源项目是免费的。

Answer 3

对于在 asp.net 中使用 c# 和行跨度和列跨度创建 PDF

1) 请安装安装包 iTextSharp-LGPL nuget

2)对于行跨度

private static void addCellWithRowSpan(PdfPTable table, string text, int rowspan, bool colorStatus, bool fontStatus)
{
    BaseFont bfTimes = BaseFont.CreateFont(BaseFont.TIMES_ROMAN, BaseFont.CP1252, false);
    iTextSharp.text.Font times;
    if (fontStatus == false)
    {
        times = new iTextSharp.text.Font(bfTimes, 8, iTextSharp.text.Font.NORMAL, Color.BLACK);
    }
    else
    {
        times = new iTextSharp.text.Font(bfTimes, 8, iTextSharp.text.Font.BOLD, Color.BLACK);
    }
    PdfPCell cell = new PdfPCell(new Phrase(text, times));
    cell.Rowspan = rowspan;

    cell.HorizontalAlignment = PdfPCell.ALIGN_CENTER;
    cell.VerticalAlignment = PdfPCell.ALIGN_MIDDLE;

    if (colorStatus == true)
    {
        cell.BackgroundColor = new Color(179, 179, 179);
    }
    table.AddCell(cell);
}

3)对于科尔斯潘

private static void addCellWithColSpan(PdfPTable table, string text, int colspan, bool colorStatus, bool alignmentStatus, bool fontStatus)
{
    BaseFont bfTimes = BaseFont.CreateFont(BaseFont.TIMES_ROMAN, BaseFont.CP1252, false);
    iTextSharp.text.Font times;
    if (fontStatus == false)
    {
        times = new iTextSharp.text.Font(bfTimes, 8, iTextSharp.text.Font.NORMAL, Color.BLACK);
    }
    else
    {
        times = new iTextSharp.text.Font(bfTimes, 8, iTextSharp.text.Font.BOLD, Color.BLACK);
    }
    PdfPCell cell = new PdfPCell(new Phrase(text, times));
    cell.Colspan = colspan;
    if (alignmentStatus == false)
    {
        cell.HorizontalAlignment = PdfPCell.ALIGN_CENTER;
        cell.VerticalAlignment = PdfPCell.ALIGN_MIDDLE;
    }
    else
    {
        cell.HorizontalAlignment = PdfPCell.ALIGN_RIGHT;
        cell.VerticalAlignment = PdfPCell.ALIGN_MIDDLE;
    }
    if (colorStatus == true)
    {
        cell.BackgroundColor = new Color(179, 179, 179);
    }
    table.AddCell(cell);
}

4)下面的代码将让您了解如何使用 addCellWithRowSpan 和 addCellWithColSpan

public void GenerateInvoice()
{
    var doc = new Document(PageSize.A4);

    PdfWriter.GetInstance(doc, new FileStream(@"D:\" + "/Doc19.pdf", FileMode.Create));
    doc.Open();

    PdfPTable headerTable = new PdfPTable(new float[] { 30f, 40f });
    // add a image
    BaseFont bfTimes = BaseFont.CreateFont(BaseFont.TIMES_ROMAN, BaseFont.CP1252, false);
    Font fontH1 = new Font(bfTimes, 9, Font.BOLD);
    PdfPCell imageCell;
    iTextSharp.text.Image logo = iTextSharp.text.Image.GetInstance("ImagePath");
    logo.ScaleToFit(90f, 90f);
    imageCell = new PdfPCell(logo);
    imageCell.Colspan = 1; // either 1 if you need to insert one cell
    imageCell.Border = 0;

    // add a image
    PdfPCell rowCell;
    float[] headerWidths = new float[] { 250f, 250f };
    headerTable.AddCell(imageCell);

    rowCell = new PdfPCell(new Phrase("Invoice No : INV10001\nInvoices Type : ", fontH1));
    rowCell.Border = 0;
    rowCell.PaddingTop = 30f;
    headerTable.AddCell(rowCell);
    headerTable.HorizontalAlignment = 0;
    headerTable.TotalWidth = 700f;
    headerTable.LockedWidth = true;
    headerTable.SetWidths(headerWidths);
    headerTable.DefaultCell.Border = Rectangle.NO_BORDER;
    doc.Add(headerTable);

    Paragraph p = new Paragraph(new Chunk(new iTextSharp.text.pdf.draw.LineSeparator(0.0F, 100.0F, new Color(65, 105, 225), Element.ALIGN_LEFT, 1)));
    doc.Add(p);

    Paragraph p1 = new Paragraph("\n");
    doc.Add(p1);


    PdfPTable ContentTable = new PdfPTable(7);
    ContentTable.HorizontalAlignment = 0;
    ContentTable.TotalWidth = 523f;
    ContentTable.LockedWidth = true;
    float[] widths = new float[] { 20f, 60f, 60f, 60f, 60f, 60f, 60f };
    ContentTable.SetWidths(widths);

    addCellWithRowSpan(ContentTable, "#", 1, true, true);

    addCellWithRowSpan(ContentTable, "Request NO", 1, true, true);
    addCellWithRowSpan(ContentTable, "Shipment Date", 1, true, true);
    addCellWithRowSpan(ContentTable, "VIN", 1, true, true);
    addCellWithColSpan(ContentTable, "Vehicle Name", 2, true, false, true);
    addCellWithRowSpan(ContentTable, "Amount", 1, true, true);

    addCellWithRowSpan(ContentTable, "1", 3, false, false);
    addCellWithRowSpan(ContentTable, "SHC!10002", 1, false, false);
    addCellWithRowSpan(ContentTable, "1-1-1", 1, false, false);
    addCellWithRowSpan(ContentTable, "VIEEEIEWWNdfssssssssssssssssssssssssssssssssssssssssss", 1, false, false);
    addCellWithColSpan(ContentTable, "Vehicle Name", 2, false, false, false);
    addCellWithRowSpan(ContentTable, "254567576", 3, false, false);


    addCellWithRowSpan(ContentTable, "Consignee Name", 1, true, true);
    addCellWithRowSpan(ContentTable, "Notify Name", 1, true, true);
    addCellWithRowSpan(ContentTable, "Port Of Loading", 1, true, true);
    addCellWithRowSpan(ContentTable, "Port Of Destination", 1, true, true);
    addCellWithRowSpan(ContentTable, "Millage", 1, true, true);

    addCellWithRowSpan(ContentTable, "Tata Birla", 1, false, false);
    addCellWithRowSpan(ContentTable, "Dipanki Jadav", 1, false, false);
    addCellWithRowSpan(ContentTable, "POL", 1, false, false);
    addCellWithRowSpan(ContentTable, "POD@", 1, false, false);
    addCellWithRowSpan(ContentTable, "Millagekhefjkhjhf", 1, false, false);




    addCellWithRowSpan(ContentTable, "2", 3, false, false);
    addCellWithRowSpan(ContentTable, "SHC!10002", 1, false, false);
    addCellWithRowSpan(ContentTable, "1-1-1", 1, false, false);
    addCellWithRowSpan(ContentTable, "VIEEEIEWWNdfssssssssssssssssssssssssssssssssssssssssss", 1, false, false);
    addCellWithColSpan(ContentTable, "Vehicle Name", 2, false, false, false);
    addCellWithRowSpan(ContentTable, "254567576", 3, false, false);


    addCellWithRowSpan(ContentTable, "Consignee Name", 1, true, true);
    addCellWithRowSpan(ContentTable, "Notify Name", 1, true, true);
    addCellWithRowSpan(ContentTable, "Port Of Loading", 1, true, true);
    addCellWithRowSpan(ContentTable, "Port Of Destination", 1, true, true);
    addCellWithRowSpan(ContentTable, "Millage", 1, true, true);

    addCellWithRowSpan(ContentTable, "Tata Birla", 1, false, false);
    addCellWithRowSpan(ContentTable, "Dipanki Jadav", 1, false, false);
    addCellWithRowSpan(ContentTable, "POL", 1, false, false);
    addCellWithRowSpan(ContentTable, "POD@", 1, false, false);
    addCellWithRowSpan(ContentTable, "Millagekhefjkhjhf", 1, false, false);

    addCellWithColSpan(ContentTable, "20i083408", 6, true, true, true);
    addCellWithRowSpan(ContentTable, "-----", 1, true, true);

    doc.Add(ContentTable);

    doc.Add(p1);
    Font fontH2 = new Font(bfTimes, 9, Font.BOLD);
    Paragraph p2 = new Paragraph("Company Name \n -----------\nPhone No: ----------------", fontH2);
    doc.Add(p2);
    doc.Close();
}