我有一个ASCX控件，它显示一个标签云（使用数据列表的红色和绿色标签）。有没有办法将此数据列表导出为PDF文件，同时保留标签大小和颜色？谢谢你的帮助
Use a PDF library for .NET. The best example is probably iText. The book iText in Action is also well worth the investment and will get you up and running with the iText .NET API quickly.
除了ASCX/HTML版本之外，还要创建一个PDF版本的标记云，而不是试图将HTML片段转换为PDF。
Response.ContentType = "application/pdf";
Response.AddHeader("content-disposition", "attachment;filename=GridViewExport.pdf");
Response.Cache.SetCacheability(HttpCacheability.NoCache);
StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
datalist1.RenderControl(hw);
StringReader sr = new StringReader(sw.ToString());
Document pdfDoc = new Document(PageSize.A4, 10f, 10f, 10f, 0f);
HTMLWorker htmlparser = new HTMLWorker(pdfDoc);
PdfWriter.GetInstance(pdfDoc, Response.OutputStream);
pdfDoc.Open();
htmlparser.Parse(sr);
pdfDoc.Close();
Response.Write(pdfDoc);
Response.End();
protected void GenerateReport(object sender, EventArgs e)
{
DataRow dr = GetData("SELECT * FROM Employees where EmployeeId = " + ddlEmployees.SelectedItem.Value).Rows[0]; ;
Document document = new Document(PageSize.A4, 88f, 88f, 10f, 10f);
Font NormalFont = FontFactory.GetFont("Arial", 12, Font.NORMAL, Color.BLACK);
using (System.IO.MemoryStream memoryStream = new System.IO.MemoryStream())
{
PdfWriter writer = PdfWriter.GetInstance(document, memoryStream);
Phrase phrase = null;
PdfPCell cell = null;
PdfPTable table = null;
Color color = null;
document.Open();
//Header Table
table = new PdfPTable(2);
table.TotalWidth = 500f;
table.LockedWidth = true;
table.SetWidths(new float[] { 0.3f, 0.7f });
//Company Logo
cell = ImageCell("~/images/northwindlogo.gif", 30f, PdfPCell.ALIGN_CENTER);
table.AddCell(cell);
//Company Name and Address
phrase = new Phrase();
phrase.Add(new Chunk("Microsoft Northwind Traders Company
", FontFactory.GetFont("Arial", 16, Font.BOLD, Color.RED)));
phrase.Add(new Chunk("107, Park site,
", FontFactory.GetFont("Arial", 8, Font.NORMAL, Color.BLACK)));
phrase.Add(new Chunk("Salt Lake Road,
", FontFactory.GetFont("Arial", 8, Font.NORMAL, Color.BLACK)));
phrase.Add(new Chunk("Seattle, USA", FontFactory.GetFont("Arial", 8, Font.NORMAL, Color.BLACK)));
cell = PhraseCell(phrase, PdfPCell.ALIGN_LEFT);
cell.VerticalAlignment = PdfCell.ALIGN_TOP;
table.AddCell(cell);
//Separater Line
color = new Color(System.Drawing.ColorTranslator.FromHtml("#A9A9A9"));
DrawLine(writer, 25f, document.Top - 79f, document.PageSize.Width - 25f, document.Top - 79f, color);
DrawLine(writer, 25f, document.Top - 80f, document.PageSize.Width - 25f, document.Top - 80f, color);
document.Add(table);
table = new PdfPTable(2);
table.HorizontalAlignment = Element.ALIGN_LEFT;
table.SetWidths(new float[] { 0.3f, 1f });
table.SpacingBefore = 20f;
//Employee Details
cell = PhraseCell(new Phrase("Employee Record", FontFactory.GetFont("Arial", 12, Font.UNDERLINE, Color.BLACK)), PdfPCell.ALIGN_CENTER);
cell.Colspan = 2;
table.AddCell(cell);
cell = PhraseCell(new Phrase(), PdfPCell.ALIGN_CENTER);
cell.Colspan = 2;
cell.PaddingBottom = 30f;
table.AddCell(cell);
//Photo
cell = ImageCell(string.Format("~/photos/{0}.jpg", dr["EmployeeId"]), 25f, PdfPCell.ALIGN_CENTER);
table.AddCell(cell);
//Name
phrase = new Phrase();
phrase.Add(new Chunk(dr["TitleOfCourtesy"] + " " + dr["FirstName"] + " " + dr["LastName"] + "
", FontFactory.GetFont("Arial", 10, Font.BOLD, Color.BLACK)));
phrase.Add(new Chunk("(" + dr["Title"].ToString() + ")", FontFactory.GetFont("Arial", 8, Font.BOLD, Color.BLACK)));
cell = PhraseCell(phrase, PdfPCell.ALIGN_LEFT);
cell.VerticalAlignment = PdfPCell.ALIGN_MIDDLE;
table.AddCell(cell);
document.Add(table);
DrawLine(writer, 160f, 80f, 160f, 690f, Color.BLACK);
DrawLine(writer, 115f, document.Top - 200f, document.PageSize.Width - 100f, document.Top - 200f, Color.BLACK);
table = new PdfPTable(2);
table.SetWidths(new float[] { 0.5f, 2f });
table.TotalWidth = 340f;
table.LockedWidth = true;
table.SpacingBefore = 20f;
table.HorizontalAlignment = Element.ALIGN_RIGHT;
//Employee Id
table.AddCell(PhraseCell(new Phrase("Employee code:", FontFactory.GetFont("Arial", 8, Font.BOLD, Color.BLACK)), PdfPCell.ALIGN_LEFT));
table.AddCell(PhraseCell(new Phrase("000" + dr["EmployeeId"], FontFactory.GetFont("Arial", 8, Font.NORMAL, Color.BLACK)), PdfPCell.ALIGN_LEFT));
cell = PhraseCell(new Phrase(), PdfPCell.ALIGN_CENTER);
cell.Colspan = 2;
cell.PaddingBottom = 10f;
table.AddCell(cell);
//Address
table.AddCell(PhraseCell(new Phrase("Address:", FontFactory.GetFont("Arial", 8, Font.BOLD, Color.BLACK)), PdfPCell.ALIGN_LEFT));
phrase = new Phrase(new Chunk(dr["Address"] + "
", FontFactory.GetFont("Arial", 8, Font.NORMAL, Color.BLACK)));
phrase.Add(new Chunk(dr["City"] + "
", FontFactory.GetFont("Arial", 8, Font.NORMAL, Color.BLACK)));
phrase.Add(new Chunk(dr["Region"] + " " + dr["Country"] + " " + dr["PostalCode"], FontFactory.GetFont("Arial", 8, Font.NORMAL, Color.BLACK)));
table.AddCell(PhraseCell(phrase, PdfPCell.ALIGN_LEFT));
cell = PhraseCell(new Phrase(), PdfPCell.ALIGN_CENTER);
cell.Colspan = 2;
cell.PaddingBottom = 10f;
table.AddCell(cell);
//Date of Birth
table.AddCell(PhraseCell(new Phrase("Date of Birth:", FontFactory.GetFont("Arial", 8, Font.BOLD, Color.BLACK)), PdfPCell.ALIGN_LEFT));
table.AddCell(PhraseCell(new Phrase(Convert.ToDateTime(dr["BirthDate"]).ToString("dd MMMM, yyyy"), FontFactory.GetFont("Arial", 8, Font.NORMAL, Color.BLACK)), PdfPCell.ALIGN_LEFT));
cell = PhraseCell(new Phrase(), PdfPCell.ALIGN_CENTER);
cell.Colspan = 2;
cell.PaddingBottom = 10f;
table.AddCell(cell);
//Phone
table.AddCell(PhraseCell(new Phrase("Phone Number:", FontFactory.GetFont("Arial", 8, Font.BOLD, Color.BLACK)), PdfPCell.ALIGN_LEFT));
table.AddCell(PhraseCell(new Phrase(dr["HomePhone"] + " Ext: " + dr["Extension"], FontFactory.GetFont("Arial", 8, Font.NORMAL, Color.BLACK)), PdfPCell.ALIGN_LEFT));
cell = PhraseCell(new Phrase(), PdfPCell.ALIGN_CENTER);
cell.Colspan = 2;
cell.PaddingBottom = 10f;
table.AddCell(cell);
//Addtional Information
table.AddCell(PhraseCell(new Phrase("Addtional Information:", FontFactory.GetFont("Arial", 8, Font.BOLD, Color.BLACK)), PdfPCell.ALIGN_LEFT));
table.AddCell(PhraseCell(new Phrase(dr["Notes"].ToString(), FontFactory.GetFont("Arial", 8, Font.NORMAL, Color.BLACK)), PdfPCell.ALIGN_JUSTIFIED));
document.Add(table);
document.Close();
byte[] bytes = memoryStream.ToArray();
memoryStream.Close();
Response.Clear();
Response.ContentType = "application/pdf";
Response.AddHeader("Content-Disposition", "attachment; filename=Employee.pdf");
Response.ContentType = "application/pdf";
Response.Buffer = true;
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.BinaryWrite(bytes);
Response.End();
Response.Close();
}
}
private static void DrawLine(PdfWriter writer, float x1, float y1, float x2, float y2, Color color)
{
PdfContentByte contentByte = writer.DirectContent;
contentByte.SetColorStroke(color);
contentByte.MoveTo(x1, y1);
contentByte.LineTo(x2, y2);
contentByte.Stroke();
}
private static PdfPCell PhraseCell(Phrase phrase, int align)
{
PdfPCell cell = new PdfPCell(phrase);
cell.BorderColor = Color.WHITE;
cell.VerticalAlignment = PdfCell.ALIGN_TOP;
cell.HorizontalAlignment = align;
cell.PaddingBottom = 2f;
cell.PaddingTop = 0f;
return cell;
}
private static PdfPCell ImageCell(string path, float scale, int align)
{
iTextSharp.text.Image image = iTextSharp.text.Image.GetInstance(HttpContext.Current.Server.MapPath(path));
image.ScalePercent(scale);
PdfPCell cell = new PdfPCell(image);
cell.BorderColor = Color.WHITE;
cell.VerticalAlignment = PdfCell.ALIGN_TOP;
cell.HorizontalAlignment = align;
cell.PaddingBottom = 0f;
cell.PaddingTop = 0f;
return cell;
}
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