1.首先要找到wnvhtmlconvert.dll这个文件，并引入项目中。
2.Server.Execute("pos.aspx?id=" + ids); 执行相应的aspx网页
3.pos.aspx网页中有这样的一个方法，此方法用来生成html页面
protected override void Render(HtmlTextWriter writer)
{
string htmlname = "POSDemo";
string fileName = string.Empty;
string content = string.Empty;
System.IO.StringWriter stringWriter = new System.IO.StringWriter();
HtmlTextWriter htmlWriter = new HtmlTextWriter(stringWriter);
System.IO.StreamWriter sw = null;
try
{
// 将当前页面的内容呈现到临时的 HtmlTextWriter 对象中
base.Render(htmlWriter);
htmlWriter.Close();
// 得到当前页面的全部内容
content = stringWriter.ToString();
fileName = htmlname + ".html";
//sw = new StreamWriter(Server.MapPath("htm/") + fileName, false, code);
//sw.Write(str);
//sw.Flush();
//System.IO.StringWriter creaObj = new System.IO.StringWriter(Server.MapPath("html/") + fileName, false, content);
string path = HttpContext.Current.Server.MapPath("../Upload/");
System.Text.Encoding code = System.Text.Encoding.GetEncoding("utf-8");
sw = new System.IO.StreamWriter(path + fileName, false, code);
//sw = new System.IO.StreamWriter(fileName, false, code);
sw.Write(content);
sw.Flush();
string website = "http://" + HttpContext.Current.Request.Url.Authority;
Response.Write(content);
}
catch { }
finally
{
sw.Dispose();
stringWriter.Dispose();
htmlWriter.Close();
htmlWriter.Dispose();
}
}
4.运用下面的类来生成pdf字节
public class MyPDFGenerator
{
public static byte[] Create(string sUrl)
{
try
{
PdfConverter pdfConverter = new PdfConverter();
// set the license key - required
//pdfConverter.LicenseKey = "P38cBx6AWW7b9c81TjEGxnrazP+J7rOjs+9omJ3TUycauK+cLWdrITM5T59hdW5r";//test key, add by tieli
pdfConverter.LicenseKey = "oYqQgZCBlpeBlY+RgZKQj5CTj5iYmJg=";
// set the converter options - optional
pdfConverter.PdfDocumentOptions.PdfPageSize = PdfPageSize.A4;
pdfConverter.PdfDocumentOptions.PdfCompressionLevel = PdfCompressionLevel.NoCompression;
pdfConverter.PdfDocumentOptions.PdfPageOrientation = PDFPageOrientation.Portrait;
pdfConverter.PdfDocumentOptions.ShowHeader = false;
pdfConverter.PdfDocumentOptions.ShowFooter = false;
pdfConverter.PdfDocumentOptions.AutoSizePdfPage = true;
// set to generate selectable pdf or a pdf with embedded image - optional
pdfConverter.PdfDocumentOptions.GenerateSelectablePdf = true;
// set the embedded fonts option - optional, by default is false
pdfConverter.PdfDocumentOptions.EmbedFonts = false;
// enable the live HTTP links option - optional, by default is true
pdfConverter.PdfDocumentOptions.LiveUrlsEnabled = true;
// enable the support for right to left languages , by default false
pdfConverter.RightToLeftEnabled = false;
pdfConverter.PdfDocumentInfo.AuthorName = "Telamon Global, Inc.";
// add HTML header
//if (cbAddHeader.Checked)
// AddHeader(pdfConverter);
//// add HTML footer
//if (cbAddFooter.Checked)
// AddFooter(pdfConverter);
// Performs the conversion and get the pdf document bytes that you can further
// save to a file or send as a browser response
byte[] pdfBytes = pdfConverter.GetPdfFromUrlBytes(sUrl);
//byte[] pdfBytes = pdfConverter.GetPdfBytesFromHtmlFile(@"D:\Peter\Projects\TGSAPSystem\Code\HKOMS\Web Site\Quotes\aaaa.html");
//byte[] pdfBytes = pdfConverter.GetPdfBytesFromHtmlString(html);
// get the html string for the report
//StringWriter htmlStringWriter = new StringWriter();
//Server.Execute("InvoiceTemplate.aspx", htmlStringWriter);
//string htmlCodeToConvert = htmlStringWriter.GetStringBuilder().ToString();
//htmlStringWriter.Close();
//string baseUrl = GetAbsoluteUrl(url);
//SplendidError.SystemError(new StackTrace(true).GetFrame(0), baseUrl);
// get the pdf bytes from html string
//byte[] pdfBytes = pdfConverter.GetPdfBytesFromHtmlString(url);
return pdfBytes;
}
catch
{
return null;
}
}
}
5.调用方法
byte[] bytes = MyPDFGenerator.Create(Server.MapPath("../Upload/POSDemo.html"));
6.最后导出pdf
System.Web.HttpResponse response = System.Web.HttpContext.Current.Response;
response.Clear();
response.AddHeader("Content-Type", "binary/octet-stream");
response.AddHeader("Content-Disposition",
"attachment; filename=" + fileName + ".pdf; size=" + bytes.Length.ToString());
response.Flush();
response.BinaryWrite(bytes);
response.Flush();
response.End();