AltovaGen 2.0.2

AltovaGen

What is AltovaGen?

This library provides a managed, AnyCPU .NET 8+ API compatible with Altova.AltovaXML.dll (the COM interop wrapper from Altova XMLSpy 2026). Zero COM dependencies, fully cross-platform (Windows, Linux, macOS).

Features

Usage

Dependency injection (recommended)

The public API is interfaces only — implementation classes are internal. Register the services and resolve the facades:

using AltovaGen.Compat;
using Microsoft.Extensions.DependencyInjection;

var services = new ServiceCollection();
services.AddAltovaGen();
using var provider = services.BuildServiceProvider();

// The IApplication facade mirrors the original Altova.AltovaXML surface
var app = provider.GetRequiredService();

app.XSLT1.InputXMLFromText = "Test";
app.XSLT1.XSLFromText = """
    
      
      
    
    """;

string result = app.XSLT1.ExecuteAndGetResultAsString();
// result == "Test"

XSLT 2.0/3.0

Use IXSLT2 for stylesheets that need XSLT 2.0/3.0 or the Altova extension namespace xmlns:altova="http://www.w3.org/.../xslt-extensions". It is routed to the bundled SaxonCS-HE engine:

var xslt2 = provider.GetRequiredService();
xslt2.InputXMLFileName = "sales.xml";
xslt2.XSLFileName      = "sales-report.xslt";
xslt2.Execute("sales-report.fo");

Validation

var validator = provider.GetRequiredService();
validator.InputXMLFromText = xmlContent;
validator.SchemaFromText   = xsdContent;

bool isValid = validator.IsValid();

Engines are constructor-injected into the router, so IEngineRouter.SelectXsltEngine(2.0) returns the same SaxonXsltEngine instance the container registered — XSLT 2.0/3.0 (and the altova:evaluate bridge) work out of the box, with no manual registration call.

To swap the Saxon XSLT engine or to wire XQuery 3.1 / XSD 1.1 engines (not bundled), use the Action overload — the DI counterpart of IEngineRouter.RegisterSaxonEngines:

services.AddAltovaGen(options =>
{
    options.SaxonXslt       = mySaxonXsltEngine;    // null ⇒ bundled SaxonCS-HE
    options.SaxonXQuery     = myXQuery31Engine;     // null ⇒ BCL XPath subset
    options.SaxonValidation = myXsd11Engine;        // null ⇒ XSD 1.1 throws
});

Registered services:

Installation

dotnet add package AltovaGen

Requirements

• .NET 8.0 or later
• AnyCPU / platform-agnostic (no x86 dependency)

The original 32-bit Altova.AltovaXML.dll and any Altova installation are not required — neither at build time nor at runtime. AltovaGen has zero COM dependencies and never loads that assembly.

Building and testing

dotnet build AltovaGen.slnx -c Release
dotnet test  AltovaGen.slnx -c Release

License

MIT License — see LICENSE. The bundled SaxonCS-HE engine is Saxonica's Home Edition and is distributed under its own open-source license (MPL-2.0); it is consumed as a NuGet dependency and is not redistributed inside this package, and it requires no license key. Review Saxonica's terms for your distribution model.