如何在 asp.net 中使用 iTextSharp 打印 GridView 数据（全部）？我只需要一个提示而不是完整的代码
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2 回答
5
试试这个：
protected void ExportToPDF(GridView gvReport, bool LandScape)
{
int noOfColumns = 0, noOfRows = 0;
DataTable tbl = null;
if (gvReport.AutoGenerateColumns)
{
tbl = gvReport.DataSource as DataTable; // Gets the DataSource of the GridView Control.
noOfColumns = tbl.Columns.Count;
noOfRows = tbl.Rows.Count;
}
else
{
noOfColumns = gvReport.Columns.Count;
noOfRows = gvReport.Rows.Count;
}
float HeaderTextSize = 8;
float ReportNameSize = 10;
float ReportTextSize = 8;
float ApplicationNameSize = 7;
// Creates a PDF document
Document document = null;
if (LandScape == true)
{
// Sets the document to A4 size and rotates it so that the orientation of the page is Landscape.
document = new Document(PageSize.A4.Rotate(), 0, 0, 15, 5);
}
else
{
document = new Document(PageSize.A4, 0, 0, 15, 5);
}
// Creates a PdfPTable with column count of the table equal to no of columns of the gridview or gridview datasource.
iTextSharp.text.pdf.PdfPTable mainTable = new iTextSharp.text.pdf.PdfPTable(noOfColumns);
// Sets the first 4 rows of the table as the header rows which will be repeated in all the pages.
mainTable.HeaderRows = 4;
// Creates a PdfPTable with 2 columns to hold the header in the exported PDF.
iTextSharp.text.pdf.PdfPTable headerTable = new iTextSharp.text.pdf.PdfPTable(2);
// Creates a phrase to hold the application name at the left hand side of the header.
Phrase phApplicationName = new Phrase("Sample Application", FontFactory.GetFont("Arial", ApplicationNameSize, iTextSharp.text.Font.NORMAL));
// Creates a PdfPCell which accepts a phrase as a parameter.
PdfPCell clApplicationName = new PdfPCell(phApplicationName);
// Sets the border of the cell to zero.
clApplicationName.Border = PdfPCell.NO_BORDER;
// Sets the Horizontal Alignment of the PdfPCell to left.
clApplicationName.HorizontalAlignment = Element.ALIGN_LEFT;
// Creates a phrase to show the current date at the right hand side of the header.
Phrase phDate = new Phrase(DateTime.Now.Date.ToString("dd/MM/yyyy"), FontFactory.GetFont("Arial", ApplicationNameSize, iTextSharp.text.Font.NORMAL));
// Creates a PdfPCell which accepts the date phrase as a parameter.
PdfPCell clDate = new PdfPCell(phDate);
// Sets the Horizontal Alignment of the PdfPCell to right.
clDate.HorizontalAlignment = Element.ALIGN_RIGHT;
// Sets the border of the cell to zero.
clDate.Border = PdfPCell.NO_BORDER;
// Adds the cell which holds the application name to the headerTable.
headerTable.AddCell(clApplicationName);
// Adds the cell which holds the date to the headerTable.
headerTable.AddCell(clDate);
// Sets the border of the headerTable to zero.
headerTable.DefaultCell.Border = PdfPCell.NO_BORDER;
// Creates a PdfPCell that accepts the headerTable as a parameter and then adds that cell to the main PdfPTable.
PdfPCell cellHeader = new PdfPCell(headerTable);
cellHeader.Border = PdfPCell.NO_BORDER;
// Sets the column span of the header cell to noOfColumns.
cellHeader.Colspan = noOfColumns;
// Adds the above header cell to the table.
mainTable.AddCell(cellHeader);
// Creates a phrase which holds the file name.
Phrase phHeader = new Phrase("Sample Export", FontFactory.GetFont("Arial", ReportNameSize, iTextSharp.text.Font.BOLD));
PdfPCell clHeader = new PdfPCell(phHeader);
clHeader.Colspan = noOfColumns;
clHeader.Border = PdfPCell.NO_BORDER;
clHeader.HorizontalAlignment = Element.ALIGN_CENTER;
mainTable.AddCell(clHeader);
// Creates a phrase for a new line.
Phrase phSpace = new Phrase("\n");
PdfPCell clSpace = new PdfPCell(phSpace);
clSpace.Border = PdfPCell.NO_BORDER;
clSpace.Colspan = noOfColumns;
mainTable.AddCell(clSpace);
// Sets the gridview column names as table headers.
for (int i = 0; i < noOfColumns; i++)
{
Phrase ph = null;
if (gvReport.AutoGenerateColumns)
{
ph = new Phrase(tbl.Columns[i].ColumnName, FontFactory.GetFont("Arial", HeaderTextSize, iTextSharp.text.Font.BOLD));
}
else
{
ph = new Phrase(gvReport.Columns[i].HeaderText, FontFactory.GetFont("Arial", HeaderTextSize, iTextSharp.text.Font.BOLD));
}
mainTable.AddCell(ph);
}
// Reads the gridview rows and adds them to the mainTable
for (int rowNo = 0; rowNo < noOfRows; rowNo++)
{
for (int columnNo = 0; columnNo < noOfColumns; columnNo++)
{
if (gvReport.AutoGenerateColumns)
{
string s = gvReport.Rows[rowNo].Cells[columnNo].Text.Trim();
Phrase ph = new Phrase(s, FontFactory.GetFont("Arial", ReportTextSize, iTextSharp.text.Font.NORMAL));
mainTable.AddCell(ph);
}
else
{
if (gvReport.Columns[columnNo] is TemplateField)
{
DataBoundLiteralControl lc = gvReport.Rows[rowNo].Cells[columnNo].Controls[0] as DataBoundLiteralControl;
string s = lc.Text.Trim();
Phrase ph = new Phrase(s, FontFactory.GetFont("Arial", ReportTextSize, iTextSharp.text.Font.NORMAL));
mainTable.AddCell(ph);
}
else
{
string s = gvReport.Rows[rowNo].Cells[columnNo].Text.Trim();
Phrase ph = new Phrase(s, FontFactory.GetFont("Arial", ReportTextSize, iTextSharp.text.Font.NORMAL));
mainTable.AddCell(ph);
}
}
}
// Tells the mainTable to complete the row even if any cell is left incomplete.
mainTable.CompleteRow();
}
// Gets the instance of the document created and writes it to the output stream of the Response object.
PdfWriter.GetInstance(document, Response.OutputStream);
// Creates a footer for the PDF document.
HeaderFooter pdfFooter = new HeaderFooter(new Phrase(), true);
pdfFooter.Alignment = Element.ALIGN_CENTER;
pdfFooter.Border = iTextSharp.text.Rectangle.NO_BORDER;
// Sets the document footer to pdfFooter.
document.Footer = pdfFooter;
// Opens the document.
document.Open();
// Adds the mainTable to the document.
document.Add(mainTable);
// Closes the document.
document.Close();
Response.ContentType = "application/pdf";
Response.AddHeader("content-disposition", "attachment; filename= SampleExport.pdf");
Response.End();
}
从这里取
于 2012-05-05T16:09:15.013 回答
2
这就是我今天使用的。摘自http://blog.codovations.com/2011/01/generating-pdf-from-datatable-using.html
using System;
using System.Web;
using System.Data;
using iTextSharp.text;
using iTextSharp.text.pdf;
namespace yetanothercoder
{
/// <summary>
/// Summary description for CreatePdf
/// </summary>
public class PDFExporter
{
private readonly DataTable dataTable;
private readonly string fileName;
private readonly bool timeStamp;
public PDFExporter(DataTable dataTable, string fileName, bool timeStamp)
{
this.dataTable = dataTable;
this.fileName = timeStamp ? String.Format("{0}-{1}", fileName, GetTimeStamp(DateTime.Now)) : fileName;
this.timeStamp = timeStamp;
}
public void ExportPDF()
{
HttpResponse Response = HttpContext.Current.Response;
Response.Clear();
Response.ContentType = "application/octet-stream";
Response.AddHeader("Content-Disposition", "attachment; filename=" + fileName + ".pdf");
// step 1: creation of a document-object
Document document = new Document(PageSize.A4, 10, 10, 90, 10);
// step 2: we create a writer that listens to the document
PdfWriter writer = PdfWriter.GetInstance(document, Response.OutputStream);
//set some header stuff
document.AddTitle(fileName);
document.AddSubject(String.Format("Table of {0}", fileName));
document.AddCreator("www.yetanothercoder.com");
document.AddAuthor("naveenj");
// step 3: we open the document
document.Open();
// step 4: we add content to the document
CreatePages(document);
// step 5: we close the document
document.Close();
}
private void CreatePages(Document document)
{
document.NewPage();
document.Add(FormatPageHeaderPhrase(dataTable.TableName));
PdfPTable pdfTable = new PdfPTable(dataTable.Columns.Count);
pdfTable.DefaultCell.Padding = 3;
pdfTable.WidthPercentage = 100; // percentage
pdfTable.DefaultCell.BorderWidth = 2;
pdfTable.DefaultCell.HorizontalAlignment = Element.ALIGN_CENTER;
foreach (DataColumn column in dataTable.Columns)
{
pdfTable.AddCell(FormatHeaderPhrase(column.ColumnName));
}
pdfTable.HeaderRows = 1; // this is the end of the table header
pdfTable.DefaultCell.BorderWidth = 1;
foreach (DataRow row in dataTable.Rows)
{
foreach (object cell in row.ItemArray)
{
//assume toString produces valid output
pdfTable.AddCell(FormatPhrase(cell.ToString()));
}
}
document.Add(pdfTable);
}
private static Phrase FormatPageHeaderPhrase(string value)
{
return new Phrase(value, FontFactory.GetFont(FontFactory.TIMES, 10, Font.BOLD, new BaseColor(255, 0, 0)));
}
private static Phrase FormatHeaderPhrase(string value)
{
return new Phrase(value, FontFactory.GetFont(FontFactory.TIMES, 8, Font.UNDERLINE, new BaseColor(0, 0, 255)));
}
private Phrase FormatPhrase(string value)
{
return new Phrase(value, FontFactory.GetFont(FontFactory.TIMES, 8));
}
private string GetTimeStamp(DateTime value)
{
return value.ToString("yyyyMMddHHmmssffff");
}
}
}
于 2012-05-05T16:08:32.097 回答