Var htmlToPdf = new HtmlToPdf(1000, 1414) Var viewDictionary = new ViewDataDictionary(new EmptyModelMetadataProvider(), new ModelStateDictionary()) Īwait (viewContext) Throw new ArgumentNullException($"'Views/Pdf/_Invoice.cshtml' does not match any available view") Var viewResult = _compositeViewEngine.FindView(ControllerContext, "_Invoice", false) Using (var stringWriter = new StringWriter()) Just like with rendering a website, we can render the PDF into the HTTP response, or we can save the PDF to file storage. Then, we can call the ConvertHtmlString method and pass in the HTML as the parameter. From there, we can convert our StreamWriter instance into a string, and that will give us the HTML of our invoice.Īfter that, we create a new instance of HtmlToPdf. We then write this ViewContext instance into our StreamWriter instance. This is what happens normally when rendering a view in MVC. To do that, we call the FindView method from the ICompositeViewEngine instance.Īssuming it exists, we need to create a new ViewContext instance. Next, we will check that the view actually exists. This instance will allow us to write the PDF file from the view. _compositeViewEngine = compositeViewEngine įrom there, we can start writing the method to turn our invoice into a PDF document.įirst, we create a new instance of StreamWriter. Public PdfController(ICompositeViewEngine compositeViewEngine) Using System namespace .Protected readonly ICompositeViewEngine _compositeViewEngine Therefore first you need to install Tesseract-OCR on your system, and you will have tesseract console application.įollowing is complete code to accomplish this requirement: For testing purposes, we have used a free Google tesseract OCR. For recognition you may use outer OCR supports HOCR standard. This logic specified below recognizes text for PDF images. However as a workaround, we can use OCR over the resultant file, so that it becomes searchable. However if we are converting an Image containing text to PDF file, the contents inside PDF are not searchable. When adding Text elements inside PDF file, the resultant PDF is searchable. NET provides the feature to create as well as manipulate existing PDF documents. Save ( dataDir + "HelloWorld_out.pdf" ) How to Create a Searchable PDF documentĪspose.PDF for. TextFragment ( "Hello World!" )) // Save updated PDFĭocument. GetDataDir_AsposePdf_QuickStart () // Initialize document objectĭocument document = new Document () // Add page Add TextFragment to Paragraphs collection of the page.Add a Page object to the Pages collection of the Document object.To create a PDF file using C#, the following steps can be used. NET API to easily generate and read PDF files in. In this article, we are going to show how to use Aspose.PDF for. NET applications including WinForms, ASP.NET, and several others. NET API lets you create and read PDF files using C# and VB.NET. Create (or Generate) PDF document using C# languageĪspose.PDF for. Having easy-to-use functions from a library allows us to track more of the work, and less on the time-heavy details of trying to generate PDFs, whether in. We are always looking for a way to generate PDF documents and work with them in C# projects more exactly, accurately, and effectively.
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