EVO HTML to PDF Converter for Xamarin

EVO PDF Client Library for .NET is compatible with any platform which supports .NET Standard 2.0 and above or .NET Framework 4.0 and above, including:

• .NET Core 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, macOS
• Azure, Azure App Service and Azure Functions
• Xamarin for iOS, macOS and Android
• Universal Windows Platform (UWP)
• Web, Console and Desktop applications

EVO PDF Client Libraries

EVO HTML to PDF for Xamarin ZIP package contains the product binaries consisting in EVO PDF Client Library for .NET Core assembly, demo Visual Studio projects with full C# code for Xamarin applications for iOS, Android and macOS, the library documentation in CHM format.

EVO PDF Server

Before starting to use the EVO HTML to PDF Client for .NET in your applications you first have to install the EVO PDF Server. The server can be installed as 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 package contains the server files and detailed installation instructions for each platform.

After the EVO PDF Server was installed, you are ready to use the EVO PDF Client Library for .NET in your applications. You can quickly start with the demo applications from the Demo folder of this package or you can integrate the library in your own project.

To start with your own project, first add a reference to EvoPdf.Client NuGet package. Alternatively you can reference the EvoPdfClient_NetCore.dll library directly from the Bin folder of the client library ZIP package.

After the reference to library was added to your project you are now ready to start writing code to convert HTML to PDF in your .NET application

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 a HTML string and save the resulted PDF to a memory buffer for further processing, to a PDF file or send it to browser for download in ASP.NET applications.

The server IP address is assigned during server installation and it can be omitted from HtmlToPdfConverter constructor if the server was installed on the localhost IP address 127.0.0.1 . There are also variants of the constructor accepting an URL instead of 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 available the EVO PDF Client API for your .NET application.

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

To convert in your Xamarin application for iOS a HTML string to a PDF document in a memory buffer, save it to a file and open that file a in PDF viewer 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
using System;

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
string documentsFolder = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
string htmlToPdfFile = System.IO.Path.Combine(documentsFolder, "HtmlToMemory.pdf");
System.IO.File.WriteAllBytes(htmlToPdfFile, htmlToPdfBuffer);

// open the PDF document in the default PDF viewer
UIDocumentInteractionController pdfViewer = UIDocumentInteractionController.FromUrl(Foundation.NSUrl.FromFilename(htmlToPdfFile));
pdfViewer.PresentOpenInMenu(this.View.Frame, this.View, true);

To convert in your Xamarin application for iOS an URL to a PDF document in a memory buffer, save it to a file and open that file in a PDF viewer 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
using System;

string serverIP = "127.0.0.1";
HtmlToPdfConverter converter = new HtmlToPdfConverter(serverIP);

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

// write the memory buffer to a PDF file
string documentsFolder = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
string urlToPdfFile = System.IO.Path.Combine(documentsFolder, "UrlToMemory.pdf");
System.IO.File.WriteAllBytes(urlToPdfFile, urlToPdfBuffer);

// open the PDF document in the default PDF viewer
UIDocumentInteractionController pdfViewer = UIDocumentInteractionController.FromUrl(Foundation.NSUrl.FromFilename(urlToPdfFile));
pdfViewer.PresentOpenInMenu(this.View.Frame, this.View, true);

To convert in your Xamarin application for Android a HTML string to a PDF document in a memory buffer, save it to a file and open that file a in PDF viewer 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
string documentsFolder = System.Environment.GetFolderPath(System.Environment.SpecialFolder.MyDocuments);
string htmlToPdfFile = System.IO.Path.Combine(documentsFolder, "HtmlToMemory.pdf");
System.IO.File.WriteAllBytes(htmlToPdfFile, htmlToPdfBuffer);

// open the PDF document in the default PDF viewer
Android.Net.Uri uri = Android.Net.Uri.Parse("content://" + htmlToPdfFile);
Intent intent = new Intent(Intent.ActionView, uri);
intent.SetDataAndType(uri, "application/pdf");
intent.SetFlags(ActivityFlags.NewTask | ActivityFlags.GrantReadUriPermission);
this.ApplicationContext.StartActivity(intent);

To convert in your Xamarin application for Android an URL to a PDF document in a memory buffer, save it to a file and open that file in a PDF viewer 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 an URL to a memory buffer
string htmlPageURL = "http://www.evopdf.com";
byte[] urlToPdfBuffer = converter.ConvertUrl(htmlPageURL);

// write the memory buffer to a PDF file
string documentsFolder = System.Environment.GetFolderPath(System.Environment.SpecialFolder.MyDocuments);
string urlToPdfFile = System.IO.Path.Combine(documentsFolder, "UrlToMemory.pdf");
System.IO.File.WriteAllBytes(urlToPdfFile, urlToPdfBuffer);

// open the PDF document in the default PDF viewer
Android.Net.Uri uri = Android.Net.Uri.Parse("content://" + urlToPdfFile);
Intent intent = new Intent(Intent.ActionView, uri);
intent.SetDataAndType(uri, "application/pdf");
intent.SetFlags(ActivityFlags.NewTask | ActivityFlags.GrantReadUriPermission);
this.ApplicationContext.StartActivity(intent);

To convert in your Xamarin application for macOS a HTML string to a PDF document in a memory buffer, save it to a file and open that file a in PDF viewer 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
string htmlToPdfFile = "HtmlToMemory.pdf";
System.IO.File.WriteAllBytes(htmlToPdfFile, htmlToPdfBuffer);

// open the PDF document in the default PDF viewer
System.Diagnostics.Process.Start(htmlToPdfFile);

To convert in your Xamarin application for macOS an URL to a PDF document in a memory buffer, save it to a file and open that file in a PDF viewer 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 an URL to a memory buffer
string htmlPageURL = "http://www.evopdf.com";
byte[] urlToPdfBuffer = converter.ConvertUrl(htmlPageURL);

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

// open the PDF document in the default PDF viewer
System.Diagnostics.Process.Start(urlToPdfFile);