使用C＃将HTML文件导出到ASP.NET中的pdf [英] Export HTML file to pdf in ASP.NET with C#
问题描述
我在pdf文件中导出html文件并且我有图像问题，
图像显示大不正确的pdf文件格式
使用iTextSharp生成pdf
。
使用此代码..
public void ExportToPdf（DataTable myDataTable）
{
// Invoice（Bill）的虚拟数据。
string companyName =ASPSnippets;
int orderNo = 2303;
DataTable dt = new DataTable（）;
dt.Columns.AddRange（new DataColumn [5] {
new DataColumn（ProductId，typeof（string）），
new DataColumn（Product，typeof（string）），
new DataColumn（Price，typeof（int）），
new DataColumn（Quantity，typeof（int）），
new DataColumn（ 总计，typeof（int））}）;
dt.Rows.Add（101，Sun Glasses，200,5,1000）;
dt.Rows.Add（102，Jeans，400,2,800）;
dt.Rows.Add（103，Trousers，300,3,900）;
dt.Rows.Add（104，Shirts，550,2,1100） ;
使用（StringWriter sw = new StringWriter（））
{
using（HtmlTextWriter hw = new HtmlTextWriter（sw））
{
StringBuilder sb = new StringBuilder（）;
//生成发票（比尔）标题。
sb.Append（）;
sb.Append（）;
sb.Append（ ）;
sb.Append（）;
sb.Append（）;
sb.Append（
| 订单号：）; sb.Append（orderNo）; sb.Append（ | 日期：）; sb.Append（DateTime.Now）; sb.Append（ |
| 公司名称：）; sb.Append（companyName）; sb.Append（ | |
sb.Append（
）;
//生成发票（比尔）项目网格。
sb.Append（）;
sb.Append（）;
foreach（dt.Columns中的DataColumn列）
{
sb.Append（）;
}
sb.Append（）;
foreach（dt.Rows中的DataRow行）
{
sb.Append （）;
foreach（Dat dt.Columns中的aColumn列）
{
sb.Append（）;
}
sb .Append（）;
}
sb.Append（）;
sb.Append（）;
sb.Append（
| ）; sb.Append（column.ColumnName）; sb.Append（ | |
|---|---|
| ）; sb.Append（row [column]）; sb.Append（ | |
| sb.Append（dt.Columns.Count - 1）; sb.Append（>总计 | ）; sb.Append（dt.Compute（sum（总计），））; sb.Append（ |
//将HTML字符串导出为PDF格式。
StringReader sr = new StringReader（sb.ToString（））;
文档pdfDoc =新文档（PageSize.A4,10f，10f，10f，0f）;
HTMLWorker htmlparser = new HTMLWorker（pdfDoc）;
PdfWriter writer = PdfWriter.GetInstance（pdfDoc，Response.OutputStream）;
pdfDoc.Open（）;
htmlparser.Parse（sr）;
pdfDoc.Close（）;
Response.ContentType =application / pdf;
响应。 AddHeader（content-disposition，attachment; filename = Invoice_+ orderNo +。pdf）;
Response.Cache.SetCacheability（HttpCacheability.NoCache）;
Response.Write（pdfDoc）;
Response.End（）;
}
}
} < br $>
谢谢......
我尝试过的事情：
图像无法在pdf生成文件中正确显示使用iTextSharp
您好，
我建议使用另一个开源工具WKHTMLTOPDF。我已经在许多项目中使用它并且工作正常。
wkhtmltopdf
public byte [] WkHtmlToPdf（string url，string wkHtmlDir）
{
////获取身份验证cookie
var cookieName = FormsAuthentication.FormsCookieName;
var authCookie = HttpContext.Request.Cookies [cookieName ];
const string fileName = - ;
var wkHtmlExe = wkHtmlDir +\\wkhtmltopdf.exe; < br $>
var p = new流程
{
StartInfo =
{
CreateNoWindow = true，
RedirectStandardOutput = true，
RedirectStandardError = true，
RedirectStandardInput = true，
UseShellExecute = false，
FileName = wkHtmlExe，
WorkingDirectory = wkHtmlDir
}
};
var switches =;
开关+ = - print-media-type;
if （authCookie！= null）switch + = string.Format（ - cookie {0} {1}，authCookie.Name，authCookie.Value）;
switch（reportTypeId）
{
案例4：
开关+ = - margin-top 0mm - margin-bottom 0mm --margin-right 0mm --margin-左边15mm;
休息;
默认：
开关+ = - margin-top 20mm - margin-bottom 10mm - margin-right 10mm --margin-left 10mm;
休息;
}
开关+ = --P年龄大小A4;
//开关+ = - head-html http：//+ Request.Url.Authority +/Content/html/header.html;
if（延迟）
开关+ = - javascript-delay 1000;
p.StartInfo.Arguments = switches +\ + url +\+ fileName;
p.Start（）;
//读取输出
var buffer = new byte [32768];
byte [] file;
using（var ms = new MemoryStream（））
{
while（true）
{
var read = p.StandardOutput.BaseStream.Read（buffer，0，buffer.Length ）;
if（读< = 0）
{
break;
}
ms.Write（缓冲区，0，读取）;
}
file = ms.ToArray（）;
}
//等待或退出
p.WaitForExit（60000）;
//读取退出代码，关闭流程
var returnCode = p。 ExitCode;
p.Close（）;
var filePath = wkHtmlDir +\\\log.txt;
FileHelper.WriteLine（filePath，string.Format（Url：{0}，url））;
FileHelper.WriteLine（filePath，string.Format（ReturnCode：{0 }，returnCode.ToString（CultureInfo.InvariantCulture）））;
FileHelper.WriteLine（filePath，string.Format（File Length：{0}，（file.Length）））;
返回returnCode == 0？ file：null;
}
希望这会有所帮助
问候，
Vinod
定制软件开发公司
I have export html file in pdf file and i have image issue,
Image dispaly vary large not set proper in pdf file format
pdf generate using iTextSharp
.
Using this code..
public void ExportToPdf(DataTable myDataTable)
{
//Dummy data for Invoice (Bill).
string companyName = "ASPSnippets";
int orderNo = 2303;
DataTable dt = new DataTable();
dt.Columns.AddRange(new DataColumn[5] {
new DataColumn("ProductId", typeof(string)),
new DataColumn("Product", typeof(string)),
new DataColumn("Price", typeof(int)),
new DataColumn("Quantity", typeof(int)),
new DataColumn("Total", typeof(int))});
dt.Rows.Add(101, "Sun Glasses", 200, 5, 1000);
dt.Rows.Add(102, "Jeans", 400, 2, 800);
dt.Rows.Add(103, "Trousers", 300, 3, 900);
dt.Rows.Add(104, "Shirts", 550, 2, 1100);
using (StringWriter sw = new StringWriter())
{
using (HtmlTextWriter hw = new HtmlTextWriter(sw))
{
StringBuilder sb = new StringBuilder();
//Generate Invoice (Bill) Header.
sb.Append("");
sb.Append("");
sb.Append("");
sb.Append("");
sb.Append("");
sb.Append("
| Order No: "); sb.Append(orderNo); sb.Append(" | Date: "); sb.Append(DateTime.Now); sb.Append(" |
| Company Name: "); sb.Append(companyName); sb.Append(" | |
sb.Append("
");
//Generate Invoice (Bill) Items Grid.
sb.Append("");
sb.Append("");
foreach (DataColumn column in dt.Columns)
{
sb.Append("");
}
sb.Append("");
foreach (DataRow row in dt.Rows)
{
sb.Append("");
foreach (DataColumn column in dt.Columns)
{
sb.Append("");
}
sb.Append("");
}
sb.Append("");
sb.Append("");
sb.Append("
| "); sb.Append(column.ColumnName); sb.Append(" | |
|---|---|
| "); sb.Append(row[column]); sb.Append(" | |
| sb.Append(dt.Columns.Count - 1); sb.Append("">Total | "); sb.Append(dt.Compute("sum(Total)", "")); sb.Append(" |
//Export HTML String as PDF.
StringReader sr = new StringReader(sb.ToString());
Document pdfDoc = new Document(PageSize.A4, 10f, 10f, 10f, 0f);
HTMLWorker htmlparser = new HTMLWorker(pdfDoc);
PdfWriter writer = PdfWriter.GetInstance(pdfDoc, Response.OutputStream);
pdfDoc.Open();
htmlparser.Parse(sr);
pdfDoc.Close();
Response.ContentType = "application/pdf";
Response.AddHeader("content-disposition", "attachment;filename=Invoice_" + orderNo + ".pdf");
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.Write(pdfDoc);
Response.End();
}
}
}
Thankx...
What I have tried:
Image not display proper in pdf generate file using iTextSharp
Hi,
I suggest to use another open source tool WKHTMLTOPDF. I have used in Many projects and it is working fine.
wkhtmltopdf
public byte[] WkHtmlToPdf(string url, string wkHtmlDir)
{
//// Get the authentication cookie
var cookieName = FormsAuthentication.FormsCookieName;
var authCookie = HttpContext.Request.Cookies[cookieName];
const string fileName = " - ";
var wkHtmlExe = wkHtmlDir + "\\wkhtmltopdf.exe";
var p = new Process
{
StartInfo =
{
CreateNoWindow = true,
RedirectStandardOutput = true,
RedirectStandardError = true,
RedirectStandardInput = true,
UseShellExecute = false,
FileName = wkHtmlExe,
WorkingDirectory = wkHtmlDir
}
};
var switches = "";
switches += "--print-media-type ";
if (authCookie != null) switches += string.Format("--cookie {0} {1} ", authCookie.Name, authCookie.Value);
switch (reportTypeId)
{
case 4:
switches += "--margin-top 0mm --margin-bottom 0mm --margin-right 0mm --margin-left 15mm ";
break;
default:
switches += "--margin-top 20mm --margin-bottom 10mm --margin-right 10mm --margin-left 10mm ";
break;
}
switches += "--page-size A4 ";
//switches += "--header-html http://" + Request.Url.Authority + "/Content/html/header.html ";
if (delay)
switches += "--javascript-delay 1000";
p.StartInfo.Arguments = switches + " \"" + url + "\" " + fileName;
p.Start();
//read output
var buffer = new byte[32768];
byte[] file;
using (var ms = new MemoryStream())
{
while (true)
{
var read = p.StandardOutput.BaseStream.Read(buffer, 0, buffer.Length);
if (read <= 0)
{
break;
}
ms.Write(buffer, 0, read);
}
file = ms.ToArray();
}
// wait or exit
p.WaitForExit(60000);
// read the exit code, close process
var returnCode = p.ExitCode;
p.Close();
var filePath = wkHtmlDir + "\\log.txt";
FileHelper.WriteLine(filePath, string.Format("Url: {0}", url));
FileHelper.WriteLine(filePath, string.Format("ReturnCode: {0}", returnCode.ToString(CultureInfo.InvariantCulture)));
FileHelper.WriteLine(filePath, string.Format("File Length: {0}", (file.Length)));
return returnCode == 0 ? file : null;
}
Hope this will help
Regards,
Vinod
custom software development companies
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