Tom*_*Ufx 18 html c# pdf pdfsharp itextsharp
PDFSharp库是否可以像iTextSharp一样生成PDF文件*考虑HTML格式*？(粗体(强),间距(br)等)
以前我使用iTextSharp并以这种方式粗略处理(下面的代码):
string encodingMetaTag = "<meta http-equiv=\"Content-Type\" content=\"text/html; charset=utf-8\" />";
string htmlCode = "text <div> <b> bold </ b> or <u> underlined </ u> <div/>";
var sr = new StringReader (encodingMetaTag + htmlCode);
var pdfDoc = new Document (PageSize.A4, 10f, 10f, 10f, 0f);
var = new HTMLWorker htmlparser (pdfDoc);
PdfWriter.GetInstance (pdfDoc, HttpContext.Current.Response.OutputStream);
pdfDoc.Open ();
htmlparser.Parse (sr);
pdfDoc.Close ();
将适当的HTML表单合并到处理类对象HTMLWorker的PDF文档中..那么用PDFSharp做什么？有PDFSharp类似的解决方案吗？
Die*_*ego 15
我知道这个问题已经过时了,但这是一个干净的方法......
您可以使用HtmlRenderer结合PDFSharp来完成此任务:
Bitmap bitmap = new Bitmap(1200, 1800);
Graphics g = Graphics.FromImage(bitmap);
HtmlRenderer.HtmlContainer c = new HtmlRenderer.HtmlContainer();
c.SetHtml("<html><body style='font-size:20px'>Whatever</body></html>");
c.PerformPaint(g);
PdfDocument doc = new PdfDocument();
PdfPage page = new PdfPage();
XImage img = XImage.FromGdiPlusImage(bitmap);
doc.Pages.Add(page);
XGraphics xgr = XGraphics.FromPdfPage(doc.Pages[0]);
xgr.DrawImage(img, 0, 0);
doc.Save(@"C:\test.pdf");
doc.Close();
有些人报告说最终图像看起来有点模糊,显然是由于自动消除锯齿.这是关于如何解决这个问题的帖子:http://forum.pdfsharp.com/viewtopic.php？f = 2&t = 1811&start = 0
老问题，但以上都不适合我。然后我尝试了HtmlRenderer结合pdfsharpgeneratepdf的方法。希望它有帮助：您必须安装一个名为.HtmlRenderer.pdfsharp
var doc = TheArtOfDev.HtmlRenderer.PdfSharp.PdfGenerator.GeneratePdf("Your html in a string",PageSize.A4);
PdfPage page = new PdfPage();
XImage img = XImage.FromGdiPlusImage(bitmap);
doc.Pages.Add(page);
XGraphics xgr = XGraphics.FromPdfPage(doc.Pages[0]);
xgr.DrawImage(img, 0, 0);
doc.Save(Server.MapPath("test.pdf"));
doc.Close();
如果您只想将某个 HTML 字符串写入 PDF，而不是其余部分，则可以使用HtmlContainerTheArtOfDev HtmlRenderer。此代码片段使用 V 1.5.1
using PdfSharp.Pdf;
using PdfSharp;
using PdfSharp.Drawing;
using TheArtOfDev.HtmlRenderer.PdfSharp;
//create a pdf document
using (PdfDocument doc = new PdfDocument())
{
doc.Info.Title = "StackOverflow Demo PDF";
//add a page
PdfPage page = doc.AddPage();
page.Size = PageSize.A4;
//fonts and styles
XFont font = new XFont("Arial", 10, XFontStyle.Regular);
XSolidBrush brush = new XSolidBrush(XColor.FromArgb(0, 0, 0));
using (XGraphics gfx = XGraphics.FromPdfPage(page))
{
//write a normal string
gfx.DrawString("A normal string written to the PDF.", font, brush, new XRect(15, 15, page.Width, page.Height), XStringFormats.TopLeft);
//write the html string to the pdf
using (var container = new HtmlContainer())
{
var pageSize = new XSize(page.Width, page.Height);
container.Location = new XPoint(15, 45);
container.MaxSize = pageSize;
container.PageSize = pageSize;
container.SetHtml("This is a <b>HTML</b> string <u>written</u> to the <font color=\"red\">PDF</font>.<br><br><a href=\"http://www.google.nl\">www.google.nl</a>");
using (var measure = XGraphics.CreateMeasureContext(pageSize, XGraphicsUnit.Point, XPageDirection.Downwards))
{
container.PerformLayout(measure);
}
gfx.IntersectClip(new XRect(0, 0, page.Width, page.Height));
container.PerformPaint(gfx);
}
}
//write the pdf to a byte array to serve as download, attach to an email etc.
byte[] bin;
using (MemoryStream stream = new MemoryStream())
{
doc.Save(stream, false);
bin = stream.ToArray();
}
}