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Aspose.PDF for .NET examples, plugins and showcase projects

License: MIT License

CSS 2.42% C# 34.65% HTML 8.76% JavaScript 22.90% ASP.NET 2.19% SCSS 28.98% Dockerfile 0.11%

aspose.pdf-for-.net's Introduction

.NET API to Process & Manipulate PDF Files

Integrate PDF creation, processing, manipulation & conversion features into your own .NET applications without needing Adobe Acrobat®.

Aspose.PDF for .NET allows to work with PDF documents, pages, text, images, attachments, fonts, bookmarks, annotations, forms, operators, stamps, watermarks, links, security, signatures, and printing.

Directory	Description
Demos	Source code for the live demos hosted at https://products.aspose.app/pdf/family.
Docker	Source code of examples based on Docker-containers.
Examples	A collection of .NET examples that help you learn the product features.
Showcases	Standalone ready-to-use applications that demonstrate some specific use cases.
Plugins	Visual Studio plugins of Aspose.PDF for .NET.

PDF Processing via .NET

Generate PDF documents on the fly through the API or via XML templates.
Supports 14 core, Type 1, TruType, Type 3, CJK & Unicode fonts.
Extract text from PDF pages or search for particular text segment using regular expressions.
Add or extract text & images to & from PDF documents.
Concatenate or split PDF files.
Linearization of PDF documents for web optimization.
Validation support for PDF/A-1a, PDF/A-1b & PDF/A-2a.
Manage PDF tables & graphs using easy to understand object model.
Convert PDF documents to Office, web, image & PS formats with highest visual fidelity.
Manipulate PDF files to manage bookmarks, hyperlinks, watermarks, attachments & annotation.
Encrypt or decrypt PDF documents as well as set document privileges or modify passwords.
Manage PDF forms to add, delete, move, flatten or decorate form fields. Developers may also import or export XML, FDF or XFDF data.
Digitally sign PDF documents or remove signatures. Also, verify if PDF is signed and signature is valid.
Print PDF documents to physical or virtual printers with or without print dialog.
Set document viewer preferences as well as manipulate document information & XMP metadata.

Read & Write PDF & Other Formats

Fixed Layout: PDF, PDF/A, PDF/UA, XPS
Books: EPUB
Web: HTML, MHTML
Other: TEX, CGM, XSLFO, XML, PCL, SVG

Save PDF Documents As

Microsoft Office: DOC, DOCX, XLS, XLSX, PPTX
Images: JPEG, PNG, BMP, TIFF, EMF
Other: MobiXML, XML

Read Formats

PostScript: PS

Platform Independence

Aspose.PDF for .NET can be used to build applications for Windows, Mac OS X x64 as well as for Linux x64. Developers may also code in PHP, VBScript, Delphi & C++ programming languages while using Aspose.PDF for .NET via COM Interop.

Getting Started with Aspose.PDF for .NET

Are you ready to give Aspose.PDF for .NET a try? Simply execute Install-Package Aspose.PDF from Package Manager Console in Visual Studio to fetch the NuGet package. If you already have Aspose.PDF for .NET and want to upgrade the version, please execute Update-Package Aspose.PDF to get the latest version.

Create a PDF Document from Scratch

// initialize document object
Document document = new Document();
// add a page
Page page = document.Pages.Add();
// add text to the new page
page.Paragraphs.Add(new Aspose.Pdf.Text.TextFragment("Hello World!"));
// save PDF document
document.Save(dir + "output.pdf");

Save PDF as Office & HTML Formats

One of the most popular feature of Aspose.PDF for .NET is to convert PDF documents to other formats without needing to understand the underlying structure of the resultant format.

Give the following snippet a try with your own samples:

// load the file to be converted
var pfile = new Aspose.Pdf.Document(dir + "template.pdf");
// save in different formats
pfile.Save(dir + "output.docx", Aspose.Pdf.SaveFormat.DocX);
pfile.Save(dir + "output.pptx", Aspose.Pdf.SaveFormat.Pptx);
pfile.Save(dir + "output.html", Aspose.Pdf.SaveFormat.Html);

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aspose.pdf-for-.net's Issues

How to Add pencil Tool

How to add pencil tool like paint.Anyone can please help.

Does not exist in the namespace System.Web.UI in .NET 4.8 error fix

Add System.Web.Extensions to the references.

Only the first page gets converted to tiff format, but not the second

Following this gist, i would expect that pages of the pdf will result in one tiff file:

https://gist.github.com/aspose-pdf/7e1330795d76012fcb04248bb81d45b3#file-examples-csharp-asposepdf-images-allpagestotiff-allpagestotiff-cs

What happens, only the first page gets converted to tiff format.

<package id="Aspose.PDF" version="20.1.0" targetFramework="net48" />

PDF 1.4 Transparency

Hello, any plans to support PDF 1.4 Transparency (i.e. BM operator)? At least, I couldn't find it in the Aspose PDF API documentation.

Adding text, images, and signatures to a PDF doesn't work

I tried to use the PDF Editor but it seems that Adding text, images, and signatures to a PDF doesn't work

Pdf editor canvas is not displaying.

I'm developing a project with Dot Net 7. In this project i am implementing new pdf editor.
Build in canvas is not displaying as well as the pdf file which has been uploaded is not showing also.

Issue with saveOptions and margins

Dear,

By exporting a document created by Aspose.Cells, I want to share an issue.

If you setup pageOptions margin with right and left borders at 0.1 the export is more at the left with a right border like 0.5 margin and a real 0.1 margin at the left.

As a workaround I setup both margin at 0.5 but this default behavior is weird.

Is it possible to review my issue ?

Regards

how to use CustomSignHash delegate

PROBLEM ON LINUX DEBIAN

If I run locally it works on Windows but just simple example with text hello world and it crashes always on document.Save

Unhandled exception. System.ArgumentNullException: Value cannot be null. (Parameter 'key')

how to compress a document of pdf

Creating PDF from HTML which contains a non-breaking space fails

When attempting to create a PDF file from HTML text which contains a non-breaking space (i.e. the   entity) the Aspose.Pdf.Document constructor fails with a NullReferenceException.

Code to reproduce:

byte[] byteArray = System.Text.Encoding.UTF8.GetBytes("&nbsp;");
using var stream = new System.IO.MemoryStream(byteArray);
var htmloptions = new Aspose.Pdf.HtmlLoadOptions();
var doc = new Aspose.Pdf.Document(stream, htmloptions); // Exception thrown here.

The thrown exception:

System.NullReferenceException: Object reference not set to an instance of an object.
   at Aspose.Pdf.Text.Font..ctor(#=zNHBl9bv5dKBFxtt9xgExszk= #=zg4LwFFM=)
   at #=zrqioYeoeEV9SrAkxSuXwlXH5Ifyvlj21WdquE7oNTcGPoqO1Sd3yyi8=.#=zdLqnfTBuN$M4C$2UFip31dB2LdAV(String #=zpnc7MyM=, Font #=zg4LwFFM=, Font& #=zMKyPsWYDEY$fJObf78seVyY=)
   at #=zIQs01lavi4DNdBNklNx6bASPbgzf.#=zuuZIr3uS2Y4E(String #=z_RjUeeI=)
   at Aspose.Pdf.Text.TextFragment.#=zDBWFds67mVyS(String #=z_RjUeeI=)
   at Aspose.Pdf.Text.TextFragment..ctor(String text)
   at #=zvFFs2HgtA62UgDSLh9$2J$vjm0p28ZsJ8g==`1.#=zL7vLnoM=(String #=z_RjUeeI=, PointF #=zj_TlQ5M=)
   at #=z9Li_ajC7P2DH_9gNchZJecBNHI9O.#=z6cQnZaM=(#=zCxY5wubIdFpGMtJOQGw0OHGDaeJIVIRIVQ== #=zcBszi6J1fEZ$, Boolean #=zZdLctoCNtTZ4u74z5g==, #=zJ3vmM7qiKmHn5QQBWTwjvIV8T_SaaenURw== #=zRBCY2gg=)
   at #=z9Li_ajC7P2DH_9gNchZJecBNHI9O.#=zqs1Nsl_OwomM(#=zfWlGV7dhTUFkybysb8upcVwAqi55rK9z0Q== #=zeobQHR4=, Boolean #=zZdLctoCNtTZ4u74z5g==, #=zJ3vmM7qiKmHn5QQBWTwjvIV8T_SaaenURw== #=zRBCY2gg=)
   at #=z9Li_ajC7P2DH_9gNchZJecBNHI9O.#=zE_3gB4gFjgQw$OgACA==(#=zcsJAVB7XAc5g1Y_MdQ== #=z0wYF1JtChsr23LfchQ==, Boolean #=zZdLctoCNtTZ4u74z5g==, #=zJ3vmM7qiKmHn5QQBWTwjvIV8T_SaaenURw== #=zRBCY2gg=)
   at #=z9Li_ajC7P2DH_9gNchZJecBNHI9O.#=zP$TpPEg=(#=zRH8f$IrX5U5FK$jd4WhwBzOLZ0IU4zUhHg== #=zZPNcMZI=, #=z_Ngejrgt9PdYCaBxsQ== #=z0wYF1JtChsr23LfchQ==, Boolean #=zZdLctoCNtTZ4u74z5g==, #=zJ3vmM7qiKmHn5QQBWTwjvIV8T_SaaenURw== #=zRBCY2gg=)
   at #=zArJ$1ei6mH73KsCnFCJHuYXIh2MkH7ERo34xqoQ=.Render(#=zPadphowpHvLcFEFXuH_tOdDwZUYo #=zlu$sVVM=)
   at #=znzoTTXv3NQyq5K0RKul_Ti03pwpiGddQlw==.#=z_1H7pgLZitRn(#=zndSqXilF3Osog0Ga6DxD3V4= #=zuRs8sXEHxAzpoGSFYg==, #=zy00zKi9g6s2rlCYLyH22q3ntVMej[] #=zyUS41KSLWa6j, #=zcR9jE0eKS5zqmNI6sRXeq3ApV$1I #=z0BulzFY=, TimeSpan #=ze$_SWv4=)
   at #=zoJdleXCqLDG06fPZsfiAlUOoZkCB.Render(#=zcR9jE0eKS5zqmNI6sRXeq3ApV$1I #=z0BulzFY=, TimeSpan #=ze$_SWv4=, #=zvn9ALkUwdUVSXZ0I3BOPfIQ=[] #=zbJWDOj8=)
   at #=zE1ve9d8lC0QyRuf_nNrVnr54eeLb.Render(#=zcR9jE0eKS5zqmNI6sRXeq3ApV$1I #=z0BulzFY=, #=zLYSUhy8= #=zOBAXFmY=, TimeSpan #=ze$_SWv4=)
   at #=zE1ve9d8lC0QyRuf_nNrVnr54eeLb.Render(#=zcR9jE0eKS5zqmNI6sRXeq3ApV$1I #=z0BulzFY=, #=zLYSUhy8= #=zOBAXFmY=)
   at #=ziYYDgCOI9XvuTjGmbALJ5m_MmaaU.#=z2LHIfiY=(Stream #=zag2acIWiccKS, Document #=zb50g2w9M2HsL, HtmlLoadOptions #=z8XWl92SxULqa, String #=z8_CisyEchoH1)
   at #=ziYYDgCOI9XvuTjGmbALJ5m_MmaaU.#=z2LHIfiY=(Stream #=zag2acIWiccKS, Document #=zb50g2w9M2HsL, HtmlLoadOptions #=z8XWl92SxULqa)
   at Aspose.Pdf.Document.#=z9jbIOJg=(Stream #=zLhuAIlM=, LoadOptions #=zX_mpQM8=)
   at Aspose.Pdf.Document..ctor(Stream input, LoadOptions options)

InheritZoom not work for 1st Bookmark

I tried the example in the repository InheritZoom , but I got an unexpected behavior:

   XYZExplicitDestination dest = new XYZExplicitDestination(0, 0, 0, 1); // It doesn't change the page
   XYZExplicitDestination dest = new XYZExplicitDestination(1, 0, 0, 1); // It goes to page 2
   XYZExplicitDestination dest = new XYZExplicitDestination(2, 0, 0, 1);   // It goes to page 3

There is no way to go to 1st page.

how to use license file

I am attempting to utilize a licensed version, but I am uncertain about how to configure the application to use the license file.

Why pdf viewer does not have button-"drop&Drop or upload your files" ? and Can this be used?

I have run the "Demos" on local ,but why it does not support to upload files ?and all the apps don't have this, ls this can be used? I want
to refer this demo to develop an individual "pdf viewer" app.
Expect your reply!

Duplicate, still no updates on main thread

aspose-pdf/Aspose.PDF-for-.NET-Old#22

https://forum.aspose.com/t/null-reference-error-while-saving-the-document/15342

AddSVGObject doesn't work with 21.9.0

The SVG is not embedded/displayed in the output PDF.

System.Drawing.Common is deprecated on non-Windows platforms

Hello, I work on the .NET Libraries team, and I saw that this library has a lot of usage in the community and depends on System.Drawing.Common for xplat scenarios.

We made the decision to make System.Drawing.Common a windows only library starting .NET6+ due to a lot of reasons after a long discussion. You can see more details here:
https://github.com/dotnet/designs/blob/a15a8c7a324c482c5e38b73e46c2afe56f6bd504/accepted/2021/system-drawing-win-only/system-drawing-win-only.md

Also: dotnet/docs#25257

We wanted to reach out so that you could react to this changes when .NET 6 is released. Also if you have any questions/concerns please do let us know at https://github.com/dotnet/runtime

What is the recommended action to still support winforms/wpf scenarios for example?

You can mark the APIs that need to use System.Drawing.Common to support winforms/wpf as windows only using the SupportedOSPlatform("windows") annotation, and then add new APIs that use another library like ImageSharp or `SkiaSharp.

Does Aspose.Pdf not support Chinese?

Q：Pdf does not support Chinese it? Will it be supported in the future?
operation：html to pdf...
version: aspose.pdf 21.5
platform：net 5.0

public static void ConvertHTMLtoPDFAdvanced_WebPage()
{
    const string url = @"https://mp.weixin.qq.com/s/dWGzQI5mdmItVXcuxVLOQA";
    HtmlLoadOptions options = new HtmlLoadOptions(url) {};
    Document pdfDocument = new Document(GetContentFromUrlAsStream(url), options);
    pdfDocument.Save(AppDomain.CurrentDomain.BaseDirectory + "html_test.PDF");
}

private static Stream GetContentFromUrlAsStream(string url, ICredentials credentials = null)
{
    using (var handler = new HttpClientHandler { Credentials = credentials })
    using (var httpClient = new HttpClient(handler))
    {
        return httpClient.GetStreamAsync(url).GetAwaiter().GetResult();
    }
}

Edit existing PDF using aspose PDF in .net C#

I want to grab existing PDF file and edit it using Aspose .I have attached the images of source and expected PDF
source.pdf
Expected.pdf

Issue generating PDF using html string

I use the following code to generate a PDF using the ASPOSE.PDF package. My requirements meant that while generating the PDF, I need the output in a memory stream and not saved to disk. So couldn't use the aspose code that takes a save file path as a parameter. Here's what I had:

public Stream GeneratePdfStream(string html)
{
    // Verify our license is loaded before using.
    VerifyLicense();

    // Turn our string into bytes using encoding.
    using var stream = new MemoryStream(Encoding.ASCII.GetBytes(html ?? string.Empty));

    // Create HTML load options
    HtmlLoadOptions htmloptions = new HtmlLoadOptions();
    htmloptions.HtmlMediaType = HtmlMediaType.Print;
    htmloptions.PageInfo.Margin.Bottom = 0;
    htmloptions.PageInfo.Margin.Top = 0;
    htmloptions.PageInfo.Margin.Right = 0;
    htmloptions.PageInfo.Margin.Left = 0;

    // Load HTML file
    Document pdfDocument = new Document(stream, htmloptions);

    // Convert HTML file to PDF
    Stream memoryStream = new MemoryStream();

    // Save output as PDF format
    pdfDocument.Save(memoryStream);
    memoryStream.Seek(0, SeekOrigin.Begin);
    return memoryStream;
}

This means that I can then download the stream for the PDF via a web API or I can convert to Base64, depending on my use case.
Calling this method with this parameter works fine:

var html = "<html><body><h1>This is a test</h1></body></html>";
var pdfStream = GeneratePdfStream(html);

using (FileStream fs = File.Create("somePath.pdf"))
{
      fs.CopyTo(pdfStream);
}

However, when I use a more real-world example, i.e. this:

// Roughly, a 10kb worth of content here.
var html = "<!doctype html> <html lang='en'> <head> <meta charset='utf-8'> <meta charset='utf-8'> <meta http-equiv='X-UA-Compatible' content='IE=edge'> <title>Invoice</title> <style> html { font-family: sans-serif; -ms-text-size-adjust: 100%; -webkit-text-size-adjust: 100%; }  body { margin: 0; }  strong { font-weight: 700; }  h1 { font-size: 2em; margin: 0.67em 0; }  sup { font-size: 75%; line-height: 0; position: relative; vertical-align: baseline; top: -0.5em; }  img { border: 0; }  table { border-collapse: collapse; border-spacing: 0; }  td, th { padding: 0; }  html { font-size: 10px; -webkit-tap-highlight-color: #fff; }  body { font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 14px; line-height: 1.42857143; color: #333; background-color: #fff; }  img { vertical-align: middle; }  h1, h2, h3 { font-family: inherit; font-weight: 500; line-height: 1.1; color: inherit; }  h1, h2, h3 { margin-top: 20px; margin-bottom: 10px; }  h1 { font-size: 36px; }  h2 { font-size: 30px; }  h3 { font-size: 24px; }  p { margin: 0 0 5px; }  .text-right { text-align: right; }  .row { margin-right: -15px; margin-left: -15px; }  .col-xs-2, .col-xs-4, .col-xs-8, .col-xs-10, .col-xs-12 { position: relative; min-height: 1px; padding-right: 15px; padding-left: 15px; float: left; }  .col-xs-12 { width: 100%; }  .col-xs-10 { width: 83.33333333%; }  .col-xs-8 { width: 66.66666667%; }  .col-xs-4 { width: 33.33333333%; }  .col-xs-2 { width: 16.66666667%; }  table { background-color: transparent; }  th { text-align: left; }  .table { width: 100%; max-width: 100%; margin-bottom: 20px; }  .table > thead > tr > th, .table > tbody > tr > th, .table > tfoot > tr > th, .table > thead > tr > td, .table > tbody > tr > td, .table > tfoot > tr > td { padding: 8px; line-height: 1.42857143; vertical-align: top; border-top: 1px solid #ddd; }  .table > thead > tr > th { vertical-align: bottom; border-bottom: 2px solid #ddd; }  .table > caption + thead > tr:first-child > th, .table > colgroup + thead > tr:first-child > th, .table > thead:first-child > tr:first-child > th, .table > caption + thead > tr:first-child > td, .table > colgroup + thead > tr:first-child > td, .table > thead:first-child > tr:first-child > td { border-top: 0; }  .table > tbody + tbody { border-top: 2px solid #ddd; }  .row:before, .row:after { display: table; content: ' '; }  .row:after { clear: both; }  body { width: 100%; height: 100%; margin: 0; padding: 0; font-family: 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-weight: 400; color: #000; font-size: 8pt; line-height: 1.5; }  * { box-sizing: border-box; -moz-box-sizing: border-box; }  .page { width: 210mm; min-height: 297mm; padding: 10mm 20mm; margin: 10mm auto; position: relative; background: #fff; box-shadow: 0 0 5px #d2d2d2; }  h1 { font-size: 18pt; font-weight: 500; margin: 30px 0 20px 0; }  h2 { font-size: 12pt; font-weight: 700; text-transform: uppercase; }  h3 { font-size: 8pt; font-weight: 700; text-transform: uppercase; margin: 0 0 10px 0; }  .logo { position: absolute; left: 20mm; width: 50mm; height: 20mm; }  .addresses { display: -webkit-box; display: -moz-box; display: -webkit-flex; display: -ms-flexbox; display: flex; }  .addresses .address-col { line-height: 1.5; padding: 0; min-width: 28%; max-width: 35%; display: inline-block; -ms-flex: 1 1 auto; flex: 1 1 auto; }  .addresses .address-divider { border-left: 1px solid #b0b0b0; display: block; padding: 0 4mm; }  .date-info { text-align: right; }  .date-info p { font-size: 9pt; line-height: 1.2; margin: 0 0 0.9rem 0; }  .registration-footer { border-top: 1px solid #b0b0b0; display: block; width: 100%; padding: 15px 15px 0 15px; }  .reason-count { margin: 0 5px; }  .table-invoice { margin-top: 10px; border-bottom: 1px solid #000; }  .table-invoice thead tr th { -webkit-print-color-adjust: exact !important; background-color: #000; color: #fff; border-bottom: 0 none !important; vertical-align: middle !important; padding: 10px 15px; }  .table-invoice thead tr th:nth-child(6) { width: 12%; padding: 0; padding-right: 10px; }  .table-invoice div.incl-vat-text { font-size: 10px; }  .table-invoice tbody tr td { padding: 5px 15px; border-color: #b0b0b0; }  .table-invoice tbody tr:first-of-type td { border-top: 0 none; }  .table-invoice.side-borders { border-bottom: 0 none; }  .table-invoice.side-borders thead tr th { border: 1px solid #ccc; }  .table-invoice.side-borders tbody tr td { border: 1px solid #ccc; }  .table-totals tbody tr td { padding: 0 0 10px 0; border: 0 none; }  .text-watermark { -webkit-print-color-adjust: exact !important; position: absolute; top: 40%; left: 0; width: 210mm; text-align: center; font-size: 110pt; color: #e6e6e6 !important; -ms-transform: rotate(-48deg); -webkit-transform: rotate(-48deg); transform: rotate(-48deg); }  @@media print { html, body { width: 210mm; height: auto; }  .page { margin: 0; border: initial; border-radius: initial; width: initial; min-height: initial; box-shadow: initial; background: initial; page-break-after: always; }  .table-invoice { border-bottom: 1px solid #000; }  .table-invoice thead tr th { -webkit-print-color-adjust: exact !important; background-color: #000 !important; color: #fff !important; }  .text-watermark { -webkit-print-color-adjust: exact !important; } }  .pr-0, .px-0 { padding-right: 0 !important; }  .pl-0, .px-0 { padding-left: 0 !important; }  .text-right { text-align: right !important; }  .m-0 { margin: 0 !important; }  .mb-0, .my-0 { margin-bottom: 0 !important; }  .mb-1, .my-1 { margin-bottom: 0.25rem !important; }  .mb-2, .my-2 { margin-bottom: 0.5rem !important; }  .mt-3, .my-3 { margin-top: 1rem !important; }  .mb-3, .my-3 { margin-bottom: 1rem !important; } </style> </head> <body> <div id='invoice' class='page'>  <img src='https://svgur.com/i/NRB.svg' class='logo' alt='examples' />  <div class='row px-0'> <div class='col-xs-12 text-right text-light'> example's<sup>&reg;</sup> Customer Services<br /> P: 00800 53847 501<br /> https://www.example.com/GB/en_GB/contact<br /> Shop: example.com </div> </div>  <div class='row px-0'> <div class='col-xs-12 text-right'> <h1>Invoice</h1> </div> </div>  <div class='row px-0'> <div class='col-xs-10'> <div class='addresses'> <div class='address-col'> <h3><strong>BILL TO</strong></h3> <p> {{BillingAddress:FirstName}}&nbsp;{{BillingAddress:LastName}}<br /> {{BillingAddress:Address1}}<br /> {{BillingAddress:Address2}}<br /> {{BillingAddress:Address3}}<br /> {{BillingAddress:City}}<br /> {{BillingAddress:PostalCode}}<br /> {{BillingAddress:Country}} </p> <p class='mb-0'><strong>P:</strong> {{BillingAddress:Telephone}}</p> </div>  <div class='address-divider'></div>  <div class='address-col'> <h3><strong>SHIP TO</strong></h3> <p> {{ShippingAddress:FirstName}}&nbsp;{{ShippingAddress:LastName}}<br /> {{ShippingAddress:Address1}}<br /> {{ShippingAddress:Address2}}<br /> {{ShippingAddress:Address3}}<br /> {{ShippingAddress:City}}<br /> {{ShippingAddress:PostalCode}}<br /> {{ShippingAddress:Country}} </p> <p class='mb-0'><strong>P:</strong> {{ShippingAddress:Telephone}}</p> </div>  <div class='address-divider'></div>  <div class='address-col'> <h3><strong>SOLD BY</strong></h3> <p> example Strauss &amp; Co Europe<br /> Airport Building<br /> someplace 19<br /> 1831 Diegem<br /> Belguim </p> </div> </div> </div> <div class='col-xs-2 date-info'> <p> <strong>Order No.</strong><br /> {{ORDERNUMBER}} </p> <p> <strong>Order Date</strong><br /> {{ORDERDATE}} </p> <p> <strong>Invoice No.</strong><br /> {{INVOICENUMBER}} </p> <p> <strong>Issue Date</strong><br /> {{ORDERDATE}} </p> </div> </div>  <div class='row px-0'> <div class='col-xs-10'> <p class='mt-3'><strong>Dear Customer,</strong></p> <p>Thank you for shopping on example.com. </p> <p>If your order comes in multiple shipments, each invoice will show the initial shipping charge but you will only be charged once for your order.</p> <p>If you have any questions relating to your purchase, please visit us at example.com. Please check our Help Centre section for further guidance.</p> <p>In case of returns, please note that you have 28 days to return any item.</p> <p>We look forward to seeing you next time.</p> <p class='mb-0'>example's<sup>&reg;</sup> Customer Service</p> </div> </div>  <div class='row px-0'> <div class='col-xs-12 px-0'> <p class='text-right'><strong>VAT amount and price are in: GBP</strong></p> <table class='table table-invoice'> <thead> <tr> <th>Product Code</th> <th>Description</th> <th>Size</th> <th>Qty</th> <th>VAT%</th> <th class='text-right'> Line Total <div class='incl-vat-text'>(Inc VAT)</div> </th> </tr> </thead> <tbody> <tr> <td>ABC123</td> <td> Umbrella1 </td> <td>100cm x 100cm</td> <td>1</td> <td class='text-right'>19.99</td> <td class='text-right'>60.00</td> </tr> <tr> <td>ZXY987</td> <td> Umbrella2 </td> <td>100cm x 100cm</td> <td>1</td> <td class='text-right'>19.99</td> <td class='text-right'>60.00</td> </tr> </tbody> </table> </div> </div>  <div class='row px-0'> <div class='col-xs-8'> <h3 class='mb-3'>Payment Info</h3> <p class='mb-1'><strong>Customer No.</strong> {{CUSTOMERNUMBER}}</p> <p class='mb-1'><strong>Payment Method.</strong> {{PAYMENTMETHOD}}</p> </div> <div class='col-xs-4'> <table class='table table-totals'> <tbody> <tr> <td><h3 class='m-0'>SUBTOTAL</h3></td> <td class='text-right'>{{CURRENCYSYMBOL}}{{SUBTOTAL}}</td> </tr> <tr> <td><strong>SHIPPING</strong></td> <td class='text-right'>{{CURRENCYSYMBOL}}{{SHIPPINGTOTAL}}</td> </tr> <tr> <td><strong>VAT</strong></td> <td class='text-right'>{{CURRENCYSYMBOL}}{{VAT}}</td> </tr> <tr> <td><h2 class='m-0'>TOTAL</h2></td> <td class='text-right'><h2 class='m-0'>{{CURRENCYSYMBOL}} {{TOTAL}}</h2></td> </tr> </tbody> </table> </div> </div>  <div class='row px-0'> <div class='col-xs-12 px-0'> <div class='registration-footer'> <p class='mb-2'> <strong>Vat Registration Number:</strong> GB 111 111 111 </p> <p class='mb-2'><strong>Company Registration Number:</strong> 0424 656 991</p> <p class='mb-2'><strong>Place Of Registration:</strong> 181 someplace, Canada</p> <p class='mb-2'><strong>Registered office address:</strong>  Someplace 19, 181 Someotherplace</p> </div> </div> </div> </div> </body> </html>";

var pdfStream = GeneratePdfStream(html);

using (FileStream fs = File.Create("somePath.pdf"))
{
      fs.CopyTo(pdfStream);
}

This fails at the following line in the GeneratePdf method:
Document pdfDocument = new Document(stream, htmloptions);

It never steps beyond this line. I can see this output to debug console in Visual Studio:

Exception thrown: 'System.MissingMethodException' in System.Private.CoreLib.dll

'testhost.exe' (CoreCLR: clrhost): Loaded 'zx_58deb2a6301a4e96b0b71407b2d74f51'. Module was built without symbols.
Exception thrown: '#=zT$tWUPWC0$36rF0x5R0MIrd44UNN_lb$xzK12V4=' in Aspose.Pdf.dll
Exception thrown: '#=zT$tWUPWC0$36rF0x5R0MIrd44UNN_lb$xzK12V4=' in Aspose.Pdf.dll
Exception thrown: '#=zT$tWUPWC0$36rF0x5R0MIrd44UNN_lb$xzK12V4=' in Aspose.Pdf.dll
Exception thrown: '#=zT$tWUPWC0$36rF0x5R0MIrd44UNN_lb$xzK12V4=' in Aspose.Pdf.dll
Exception thrown: 'System.InvalidOperationException' in Aspose.Pdf.dll

I only reference the Aspose.Pdf package, no others. What would be wrong with the approach above? I also tried the approach recommended here: https://docs.aspose.com/display/htmlnet/HTML+to+PDF+Conversion and also get the same issue with the html string above.

Thanks

How to run the demo sample?

I compiled the demo sample (https://github.com/aspose-pdf/Aspose.PDF-for-.NET/tree/master/Demos) but I cannot run it as it has no default page. According to the document as below, there should have a Default page. I also tried to create a web form based on the mater page file "site.Master" but it shows blank. Would anyone know how to run this sample?

How to run

Clone the repository

Open the solution file in the latest version of Microsoft Visual Studio.

Set Default as start page

Build the solution

using System;

using System.IO;
using Aspose.Pdf;
using Aspose.Pdf.Text;

namespace pdf_toolbox
{
    public class NumberPdf{
        public void doNumber(){
            Console.WriteLine("numberPDF....");
            Document doc = new Document();
            Page page = doc.Pages.Add();
            page.Paragraphs.Add(new Aspose.Pdf.Text.TextFragment("Hello World!"));
            doc.Save("HelloWorld_out.pdf");
        }
    }
}

log exception:

numberPDF....
Unhandled exception. System.ArgumentNullException: Value cannot be null. (Parameter 'key')
   at System.Collections.Generic.Dictionary`2.FindValue(TKey key)
   at System.Collections.Generic.Dictionary`2.TryGetValue(TKey key, TValue& value)
   at #=ztrFjUrbJYJ47NcR$8LZPthQIUnYfExa7Gg==.#=zJGcmwbM=(#=z8S5r434= #=z844B2I8=)
   at #=z2ZQc$Jcr34z9F64PqOoAxo6zJGdn_ZZShQ==.#=zYasEy4MKvAnG`2.#=zVigH4Ju$VQvV(#=z8S5r434= #=z844B2I8=, #=zmDMNKIw=& #=ztxptzkQ=)
   at #=zQ_oajpj9GYnwC_x_$CeW5sq5gwYzvZnJTeNLm28=.#=z1VnSO5vegSOD(#=zD4i4y_M$HiiP_8I17jzHejk_l_WY #=zyphWEqwLFT3f)
   at #=zFLKHFi4q9yQT1s7qN9F3Pv5T0nRo0qWzQmpbNnoq3YDi.#=zZyoz9Osy_H4G()
   at #=zFLKHFi4q9yQT1s7qN9F3Pv5T0nRo0qWzQmpbNnoq3YDi.#=zMO8ucBo=()
   at #=zQJkE9Lf6vNZzWxdK0PxKoHTE9hWkASZ5zNdndNZOH$KI.#=zDsDANj0=(#=zIrdqJtR4jlHtd_Q9LhynyGAYkowV #=zQ$qH$4U=, #=zLS0bXYESTwt6s9O9ge8mOCQdQu2XgiesZQ== #=zk6jw8Bs=, #=zk_baTkeGsSyYK2fUlwbWQSTWwiuje5rVhDZznXUVXMgE #=ziSVaJls=)
   at Aspose.Pdf.Page.CalculateContentBBox()
   at Aspose.Pdf.Page.#=z1bMZ4IQ=(Page #=zk6jw8Bs=)
   at Aspose.Pdf.Page.#=zSmp$qf7iRTeUfaT1ow==()
   at Aspose.Pdf.Document.ProcessParagraphs()
   at Aspose.Pdf.Document.#=zG7VhpvNMzChd(Stream #=zB8p3Dxo=, SaveOptions #=zsRZvAOZNkW4o)
   at Aspose.Pdf.Document.#=zFx2Xbgl0fHER(String #=zu4ufdYNMrcDG)
   at Aspose.Pdf.Document.Save(String outputFileName)

It doesn't support net6.0 ?