使用 iTextSharp 从两个网格视图生成 PDF 文件

Question

我使用 iTextSharp 从 gridview 生成 PDF 文件。

我需要帮助，因为我不熟悉 iTextSharp。

我在我的 aspx 页面中使用了两个网格视图：gvProducts 和 gvUsers。

使用 iTextSharp 从单个 (gvProducts) 网格视图生成 PDF 文件正常工作。

我无法在同一个 PDF 中打印第一个和第二个 GridView。

这就是我想要的：

1. 打开 PDF 文档；
2. 我的第一个 GridView 的打印结果；
3. 我的第二个 GridView 的打印结果；
4. 在客户端中关闭、保存和下载 PDF 文档。

有人知道我该怎么做吗？

提前谢谢你。

下面是我的代码。

protected void ExportToPDFWithFormatting()
{
    //link button column is excluded from the list
    int colCount = gvProducts.Columns.Count - 1;

    //Create a table
    PdfPTable table = new PdfPTable(colCount);

    table.HorizontalAlignment = 1;
    table.WidthPercentage = 100;

    //create an array to store column widths
    int[] colWidths = new int[gvProducts.Columns.Count];

    PdfPCell cell;
    string cellText;

    //create the header row
    for (int colIndex = 0; colIndex < colCount; colIndex++)
    {

        table.SetWidths(new int[] { 0, 40, 120, 110, 60, 60, 100, 90, 100, 50, 50, 50, 40, 30, 260, 200, 0 });

        //fetch the header text
        cellText = Server.HtmlDecode(gvProducts.HeaderRow.Cells[colIndex].Text);

        //create a new cell with header text
        BaseFont bf = BaseFont.CreateFont(
                                BaseFont.HELVETICA,
                                BaseFont.CP1252,
                                BaseFont.EMBEDDED,
                                false);

        iTextSharp.text.Font font = new iTextSharp.text.Font(bf, 10, iTextSharp.text.Font.BOLD, BaseColor.WHITE);
        cell = new PdfPCell(new Phrase(cellText.Replace("<br />", Environment.NewLine), font));
        cell.HorizontalAlignment = Element.ALIGN_CENTER;
        cell.VerticalAlignment = Element.ALIGN_MIDDLE;
        cell.FixedHeight = 45f;

        //set the background color for the header cell
        cell.BackgroundColor = new BaseColor(System.Drawing.ColorTranslator.FromHtml("#a52a2a"));

        //add the cell to the table. we dont need to create a row and add cells to the row
        //since we set the column count of the table to 4, it will automatically create row for
        //every 4 cells
        table.AddCell(cell);
    }


    //export rows from GridView to table
    for (int rowIndex = 0; rowIndex < gvProducts.Rows.Count; rowIndex++)
    {
        if (gvProducts.Rows[rowIndex].RowType == DataControlRowType.DataRow)
        {
            for (int j = 0; j < gvProducts.Columns.Count - 1; j++)
            {
                //fetch the column value of the current row
                cellText = Server.HtmlDecode(gvProducts.Rows[rowIndex].Cells[j].Text);

                //create a new cell with column value
                cell = new PdfPCell(new Phrase(cellText, FontFactory.GetFont("PrepareForExport", 8)));                   
                cell.HorizontalAlignment = Element.ALIGN_CENTER;
                cell.VerticalAlignment = Element.ALIGN_MIDDLE;
                cell.FixedHeight = 25f;

                //Set Color of Alternating row
                if (rowIndex % 2 != 0)
                {
                    cell.BackgroundColor = new BaseColor(System.Drawing.ColorTranslator.FromHtml("#f5f5dc"));
                }
                else
                {
                    cell.BackgroundColor = new BaseColor(System.Drawing.ColorTranslator.FromHtml("#fcfcfc"));
                }


                //add the cell to the table
                table.AddCell(cell);
            }
        }
    }

    //Create the PDF Document
    Document pdfDoc = new Document(PageSize.A3.Rotate(), 30f, 30f, 30f, 0f);

    PdfWriter.GetInstance(pdfDoc, Response.OutputStream);

    //open the stream
    pdfDoc.Open();
    table.HeaderRows = 1;
    iTextSharp.text.Font fdefault = FontFactory.GetFont("Verdana", 18, iTextSharp.text.Font.BOLD, BaseColor.BLUE);
    string s = "Report";
    pdfDoc.Add(new Paragraph(s, fdefault));

    //add the table to the document
    pdfDoc.Add(table);

    //close the document stream
    pdfDoc.Close();

    Response.ContentType = "application/pdf";
    Response.AddHeader("content-disposition", "attachment;" + DateTime.Now + ".pdf");
    Response.Cache.SetCacheability(HttpCacheability.NoCache);
    Response.Write(pdfDoc);
    Response.End();
}

编辑#1

这是我在第二个 GridView (gvUsers) 上生成 pdf 的代码。

代码正常，但在标题列中我有 GridView 第一的名称 (gvProducts)...为什么？

    //start pdf gridview number two
    int colCountUsers = gvUsers.Columns.Count - 1;
    PdfPTable tableUsers = new PdfPTable(colCountUsers);
    tableUsers.HorizontalAlignment = 1;
    tableUsers.WidthPercentage = 100;
    int[] colWidthsUsers = new int[gvUsers.Columns.Count];
    PdfPCell cellUsers;
    string cellTextUsers;
    for (int colIndexUsers = 0; colIndexUsers < colCountUsers; colIndexUsers++)
    {
        tableUsers.SetWidths(new int[] { 0, 40, 120, 110, 60, 60, 100 });
        cellTextUsers = Server.HtmlDecode(gvProducts.HeaderRow.Cells[colIndexUsers].Text);
        BaseFont bfUsers = BaseFont.CreateFont(
                                BaseFont.HELVETICA,
                                BaseFont.CP1252,
                                BaseFont.EMBEDDED,
                                false);

        iTextSharp.text.Font fontUsers = new iTextSharp.text.Font(bfUsers, 10, iTextSharp.text.Font.BOLD, BaseColor.WHITE);
        cellUsers = new PdfPCell(new Phrase(cellTextUsers.Replace("<br />", Environment.NewLine), fontUsers));
        cellUsers.HorizontalAlignment = Element.ALIGN_CENTER;
        cellUsers.VerticalAlignment = Element.ALIGN_MIDDLE;
        cellUsers.FixedHeight = 45f;
        cellUsers.BackgroundColor = new BaseColor(System.Drawing.ColorTranslator.FromHtml("#a52a2a"));
        tableUsers.AddCell(cellUsers);
    }


    for (int rowIndexUsers = 0; rowIndexUsers < gvUsers.Rows.Count; rowIndexUsers++)
    {
        if (gvUsers.Rows[rowIndexUsers].RowType == DataControlRowType.DataRow)
        {
            for (int j = 0; j < gvUsers.Columns.Count - 1; j++)
            {
                cellTextUsers = Server.HtmlDecode(gvUsers.Rows[rowIndexUsers].Cells[j].Text);
                cellUsers = new PdfPCell(new Phrase(cellTextUsers, FontFactory.GetFont("PrepareForExport", 8)));
                cellUsers.HorizontalAlignment = Element.ALIGN_CENTER;
                cellUsers.VerticalAlignment = Element.ALIGN_MIDDLE;
                cellUsers.FixedHeight = 25f;
                tableUsers.AddCell(cellUsers);
            }
        }
    }

    Document pdfDocUsers = new Document(PageSize.A3.Rotate(), 30f, 30f, 30f, 0f);
    PdfWriter.GetInstance(pdfDocUsers, Response.OutputStream);
    pdfDocUsers.Open();
    tableUsers.HeaderRows = 1;
    iTextSharp.text.Font fdefaultUsers = FontFactory.GetFont("Verdana", 18, iTextSharp.text.Font.BOLD, BaseColor.BLUE);
    string sUsers = "Users";
    pdfDocUsers.Add(new Paragraph(sUsers, fdefaultUsers));
    pdfDocUsers.Add(tableUsers);
    pdfDocUsers.Close();
    //end pdf gridview number two



    //in first pdf gridview
    //add the table to the document
    pdfDoc.Add(table);
    pdfDoc.Add(tableUsers);

Answer 1

int colCount1 = gvProducts1.Columns.Count - 1;

//Create a table
PdfPTable table1 = new PdfPTable(colCount1);

table1.HorizontalAlignment = 1;
table1.WidthPercentage = 100;

//create an array to store column widths
int[] colWidths1 = new int[gvProducts1.Columns.Count];

PdfPCell cell1;
string cellText1;

//create the header row
for (int colIndex1 = 0; colIndex1 < colCount1; colIndex1++)
{

    table1.SetWidths(new int[] { 0, 40, 120, 110, 60, 60, 100, 90, 100, 50, 50, 50, 40, 30, 260, 200, 0 });

    //fetch the header text
    cellText1 = Server.HtmlDecode(gvProducts1.HeaderRow.Cells[colIndex1].Text);

    //create a new cell with header text
    BaseFont bf1 = BaseFont.CreateFont(
                            BaseFont.HELVETICA,
                            BaseFont.CP1252,
                            BaseFont.EMBEDDED,
                            false);

    iTextSharp.text.Font font1 = new iTextSharp.text.Font(bf, 10, iTextSharp.text.Font.BOLD, BaseColor.WHITE);
    cell1 = new PdfPCell(new Phrase(cellText.Replace("<br />", Environment.NewLine), font));
    cell1.HorizontalAlignment = Element.ALIGN_CENTER;
    cell1.VerticalAlignment = Element.ALIGN_MIDDLE;
    cell1.FixedHeight = 45f;

    //set the background color for the header cell
    cell1.BackgroundColor = new BaseColor(System.Drawing.ColorTranslator.FromHtml("#a52a2a"));

    //add the cell to the table. we dont need to create a row and add cells to the row
    //since we set the column count of the table to 4, it will automatically create row for
    //every 4 cells
    table1.AddCell(cell1);
}


//export rows from GridView to table
for (int rowIndex1 = 0; rowIndex1 < gvProducts1.Rows.Count; rowIndex1++)
{
    if (gvProducts.Rows[rowIndex1].RowType == DataControlRowType.DataRow)
    {
        for (int j1 = 0; j1 < gvProducts1.Columns.Count - 1; j1++)
        {
            //fetch the column value of the current row
            cellText1 = Server.HtmlDecode(gvProducts1.Rows[rowIndex1].Cells[j].Text);

            //create a new cell with column value
            cell1 = new PdfPCell(new Phrase(cellText1, FontFactory.GetFont("PrepareForExport", 8)));                   
            cell1.HorizontalAlignment = Element.ALIGN_CENTER;
            cell1.VerticalAlignment = Element.ALIGN_MIDDLE;
            cell1.FixedHeight = 25f;

            //Set Color of Alternating row
            if (rowIndex1 % 2 != 0)
            {
                cell1.BackgroundColor = new BaseColor(System.Drawing.ColorTranslator.FromHtml("#f5f5dc"));
            }
            else
            {
                cell1.BackgroundColor = new BaseColor(System.Drawing.ColorTranslator.FromHtml("#fcfcfc"));
            }


            //add the cell to the table
            table1.AddCell(cell1);
        }
    }
}

//Create the PDF Document

//open the stream


//add the table to the document
pdfDoc.Add(table1);

//close the document stream
pdfDoc.Close();

Response.ContentType = "application/pdf";
Response.AddHeader("content-disposition", "attachment;" + DateTime.Now + ".pdf");
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.Write(pdfDoc);
Response.End();