• .NET 10, 9, 8, 7, 6, 5, .NET Standard 2.0 and above
• .NET Framework 4.8.1, 4.7.2, 4.6.1, 4.0 and above
• Windows, Linux and macOS
• Azure, Azure App Service and Azure Functions
• Universal Windows Platform (UWP)
• Web, Console and Desktop applications

Getting Started

Before starting to use the EVO PDF Client for .NET in your applications, you first have to install the EVO PDF Server. The server can be installed as an Azure Cloud Service Worker Role, Azure Cloud Service Web Role, Azure Service Fabric application, IIS ASP.NET web application or Windows service.

EVO PDF Server

EVO PDF Server can be downloaded from the EVO PDF Downloads page of the website. The EVO PDF Server package contains the server files and detailed installation instructions for each platform. You can start by installing the EVO PDF Server as a Windows service on the local development machine with default options. In this case, the assigned IP address is 127.0.0.1.

After the EVO PDF Server is installed, you are ready to use the EVO PDF Client Library for .NET in your applications.

C# Code Samples

Copy the C# code lines from the section below to use the HTML to PDF Converter component to create a PDF document from a web page or from an HTML string and save the resulting PDF to a memory buffer for further processing, to a PDF file or send it to the browser for download in ASP.NET applications.

The server IP address is assigned during server installation and it can be omitted from the HtmlToPdfConverter constructor if the server was installed on the localhost IP address 127.0.0.1. There are also variants of the constructor that accept a URL instead of an IP address if the server was installed as a web service in Azure or in IIS.

At the top of your C# source file add the using EvoPdfClient; statement to make the EVO PDF Client API available in your .NET application.

// add this using statement at the top of your C# file
using EvoPdfClient;

To convert an HTML string or a URL to a PDF file you can use the C# code below.

// create the converter object in your code where you want to run conversion
// change the serverIP value if the server was installed on a remote machine
string serverIP = "127.0.0.1";
HtmlToPdfConverter converter = new HtmlToPdfConverter(serverIP);

// convert the HTML string to a PDF file
converter.ConvertHtmlToFile("<b>Hello World</b> from EVO PDF !", null, "HtmlToFile.pdf");

// convert HTML page from URL to a PDF file
string htmlPageURL = "https://www.evopdf.com";
converter.ConvertUrlToFile(htmlPageURL, "UrlToFile.pdf");

To convert an HTML string or a URL to a PDF document in a memory buffer and then save it to a file you can use the C# code below.

// create the converter object in your code where you want to run conversion
// change the serverIP value if the server was installed on a remote machine
string serverIP = "127.0.0.1";
HtmlToPdfConverter converter = new HtmlToPdfConverter(serverIP);

// convert a HTML string to a memory buffer
byte[] htmlToPdfBuffer = converter.ConvertHtml("<b>Hello World</b> from EVO PDF !", null);

// write the memory buffer to a PDF file
System.IO.File.WriteAllBytes("HtmlToMemory.pdf", htmlToPdfBuffer);

// convert an URL to a memory buffer
string htmlPageURL = "https://www.evopdf.com";
byte[] urlToPdfBuffer = converter.ConvertUrl(htmlPageURL);

// write the memory buffer to a PDF file
System.IO.File.WriteAllBytes("UrlToMemory.pdf", urlToPdfBuffer);

To convert in your ASP.NET Core and ASP.NET MVC applications an HTML string or a URL to a PDF document in a memory buffer and then send it for download to the browser you can use the C# code below.

// create the converter object in your code where you want to run conversion
// change the serverIP value if the server was installed on a remote machine
string serverIP = "127.0.0.1";
HtmlToPdfConverter converter = new HtmlToPdfConverter(serverIP);

// convert a HTML string to a memory buffer
byte[] htmlToPdfBuffer = converter.ConvertHtml("<b>Hello World</b> from EVO PDF !", null);

FileResult fileResult = new FileContentResult(htmlToPdfBuffer, "application/pdf");
fileResult.FileDownloadName = "HtmlToPdf.pdf";
return fileResult;

To convert in your ASP.NET Web Forms application an HTML string to a PDF document in a memory buffer and then send it for download to the browser you can use the C# code below.

// create the converter object in your code where you want to run conversion
// change the serverIP value if the server was installed on a remote machine
string serverIP = "127.0.0.1";
HtmlToPdfConverter converter = new HtmlToPdfConverter(serverIP);

// convert a HTML string to a memory buffer
byte[] htmlToPdfBuffer = converter.ConvertHtml("<b>Hello World</b> from EVO PDF !", null);

HttpResponse httpResponse = HttpContext.Current.Response;
httpResponse.AddHeader("Content-Type", "application/pdf");
httpResponse.AddHeader("Content-Disposition",
    String.Format("attachment; filename=HtmlToPdf.pdf; size={0}",
    htmlToPdfBuffer.Length.ToString()));
httpResponse.BinaryWrite(htmlToPdfBuffer);
httpResponse.End();

Free Trial

You can download the EVO PDF Client for .NET evaluation package from EVO PDF Downloads page of the website.

The evaluation package for .NET contains the product binaries and demo projects with full C# code for .NET Framework and .NET Core.

There are separate demo projects for each major component of the library, including HTML to PDF, Word to PDF, Excel to PDF, PDF to Text, PDF to Image, PDF to HTML and PDF Images Extractor.

You can evaluate the library for free as long as needed to ensure that the solution fits your application requirements.

Licensing

The EVO PDF Software licenses are perpetual, which means they never expire for a version of the product and include free maintenance for the first year. You can find more details about licensing on the website.

The same license keys for EVO PDF software work both with regular libraries for .NET and with EVO PDF Client for .NET. For example, a license key for EVO PDF Toolkit works with all components of the client library, while a license for HTML to PDF Converter works only with this component of the client library.

Support

For technical and sales questions or for general inquiries about our software and company you can contact us using the email addresses from the contact page of the website.