Getting Started with Aspose.HTML for .NET

The recommend way to install Aspose.HTML for .NET is using NuGet. Please use the following command for a smooth installation.

 NuGet\Install-Package Aspose.Font.Cpp -Version 23.5.0

Create & Manipulate HTML File via .NET

Aspose.HTML for .NET makes it easy for software professional to generate a HTML document programmatically from scratch inside their C# applications. Software developers can perform various operations on HTML documents such as add or modify HTML elements, work with attributes, manage content, load HTML file via URL, Load HTML from a file and many more. The library provides a rich set of methods and properties to handle text formatting, tables, images, hyperlinks, CSS styles, and more. The following example shows how to create a new HTML document inside .NET applications.

using System.IO;
using Aspose.Html;
...
    // Prepare an output path for a document saving
    string documentPath = Path.Combine(OutputDir, "create-new-document.html");
			
	// Initialize an empty HTML document
	using (var document = new HTMLDocument())
	{
	    // Create a text element and add it to the document
	    var text = document.CreateTextNode("Hello World!");
	    document.Body.AppendChild(text);
	
	    // Save the document to a disk
	    document.Save(documentPath);
	}

HTML to PDF Conversion via C# API

Aspose.HTML for .NET has included a very powerful converter that allows software developers to convert HTML documents to PDF and other supported file formats with ease. The library allows seamless conversion of HTML documents to PDF format without any dependencies. The library handles the conversion process accurately, preserving the original layout, formatting, and styling of the HTML content. This feature is particularly useful for generating PDF reports, invoices, and other documents from HTML templates. The following example shows how to convert an HTML document to PDF files using .NET code.

using System.IO;
using Aspose.Html.Converters;
using Aspose.Html.Saving;
...
     // Invoke the ConvertHTML() method to convert the HTML code to PDF
     Converter.ConvertHTML(@"
Hello, World!
", ".", new PdfSaveOptions(), Path.Combine(OutputDir, "convert-with-single-line.pdf"));

Render HTML Documents via C# API

The Aspose.HTML for .NET library has included built-in functionality to render HTML documents directly to the screen or an image, allowing software developers to visualize the HTML content within their applications. It helps users in generating website screenshots, creating visual representations of web pages, or generating previews of HTML content. This feature is especially valuable in scenarios where real-time HTML rendering is required, such as web browsers, email clients, or content management systems. The following example shows how to render SVG files to other file formats with ease.

using System.IO;
using Aspose.Html;
using Aspose.Html.Rendering;
using Aspose.Html.Rendering.Pdf;
using Aspose.Html.Rendering.Pdf.Encryption;
...
    // Initialize an SVG document from the file
    using var document = new SVGDocument(Path.Combine(DataDir, "shapes.svg"));    

    // Create an instance of SVG Renderer
    using var renderer = new SvgRenderer();

    // Prepare a path to save the converted file 
    string savePath = Path.Combine(OutputDir, "merge-svg.pdf");

    // Create the instance of the PdfRenderingOptions class and set a custom page size
    var options = new PdfRenderingOptions();
    options.PageSetup.AnyPage = new Page(new Size(600, 500));            

    // Create an instance of PdfDevice class
    using var device = new PdfDevice(options, savePath);

    // Render SVG to PDF
    renderer.Render(device, document);

HTML Parsing and Manipulation

Aspose.HTML for .NET offers efficient HTML parsing capabilities, allowing software developers to load HTML documents and navigate the document structure using the Document Object Model (DOM). The DOM enables easy access to HTML elements, attributes, and content, facilitating seamless manipulation and extraction of data from HTML files. The library, helps users to extract specific elements, modify their attributes and content, and create new HTML elements dynamically with ease.

HTML Validation and Cleaning

The Aspose.HTML for .NET library has provided a very useful feature for validation and cleaning that help ensure the integrity and compliance of HTML documents. Software Developers can validate HTML files against various standards, such as HTML5, XHTML, or custom schemas inside their C# applications. They can also clean and sanitize HTML documents by removing unwanted or potentially malicious elements, ensuring a safe and reliable processing environment.