我开发了一个网页,允许用户输入值,就像注册表单一样。在保存数据时,我需要给出用于将页面下载为PDF格式的选项。如何将ASP.NET页面转换为PDF并下载相同(值不是静态的)
我试过如下:
- 我尝试使用iTextSharp的DLL。问题是我没有得到PDF文件中的所有内容。示例图像和样式未正确转换。
- 我尝试了一些第三方工具,如(SautinSoft的PdfVision,ConvertApi,pdfcrowd)程序集。所有的DLL都获取URL作为参数并转换为PDF。通过这种方式,服务器端的HTML代码被转换为PDF。我输入的值不在PDF中。
我从网络(sautinsoft)获得的示例代码。
SautinSoft.PdfVision v = new SautinSoft.PdfVision();
v.PageStyle.PageSize.Letter();
byte[] pdf = v.ConvertHtmlFileToPDFStream(@"http://en.wikipedia.org/wiki/Main_Page");
if (pdf != null)
{
Response.Buffer = true;
Response.Clear();
Response.ContentType = "application/PDF";
Response.AddHeader("Content-Disposition:", "attachment; filename=Result.pdf");
Response.BinaryWrite(pdf);
Response.Flush();
Response.End();
}
为(iTextSharp的)
protected override void Render(HtmlTextWriter writer)
{
MemoryStream mem = new MemoryStream();
StreamWriter twr = new StreamWriter(mem);
HtmlTextWriter myWriter = new HtmlTextWriter(twr);
base.Render(myWriter);
myWriter.Flush();
myWriter.Dispose();
StreamReader strmRdr = new StreamReader(mem);
strmRdr.BaseStream.Position = 0;
string pageContent = strmRdr.ReadToEnd();
strmRdr.Dispose();
mem.Dispose();
writer.Write(pageContent);
CreatePDFDocument(pageContent);
}
public void CreatePDFDocument(string strHtml)
{
string strFileName = HttpContext.Current.Server.MapPath("test.pdf");
// step 1: creation of a document-object
Document document = new Document();
// step 2:
// we create a writer that listens to the document
PdfWriter.GetInstance(document, new FileStream(strFileName, FileMode.Create));
StringReader se = new StringReader(strHtml);
HTMLWorker obj = new HTMLWorker(document);
document.Open();
obj.Parse(se);
document.Close();
ShowPdf(strFileName);
}
public void ShowPdf(string strFileName)
{
Response.ClearContent();
Response.ClearHeaders();
Response.AddHeader("Content-Disposition", "inline;filename=" + strFileName);
Response.ContentType = "application/pdf";
Response.WriteFile(strFileName);
Response.Flush();
Response.Clear();
}
让我知道,如果你有更好的解决办法。