Autodesk Inventor SDK (.NET)

This repository contains a distributable .NET SDK package for Autodesk Inventor.
It provides the required native .NET assemblies (Inventor and iLogic) for developing add-ins, commands, and automation tools targeting Autodesk Inventor 2025 and newer.

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Overview

The SDK bundles the official Inventor interop DLLs and iLogic assemblies into a NuGet package.
It allows you to develop Inventor-based add-ins or automation tools without having Inventor installed locally.

Supported versions:

• Inventor 2025
• Inventor 2026
• Inventor 2027

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How It Works

When you reference this package in your project:

• Building automatically references the correct assemblies from lib/native/<InventorVersion>/.
• You can control which assemblies are copied locally using project properties.

Property	Default	Description
InventorVersion	2027	Specifies which Inventor SDK version to use.
CopyInventorFiles	false	Copies Inventor base DLLs to the output directory.
CopyILogicFiles	false	Copies iLogic DLLs to the output directory.

Example usage in a project file:

<ItemGroup>
  <PackageReference Include="Autodesk.Inventor.Sdk" Version="2.0.0" />
</ItemGroup>

<PropertyGroup>
  <InventorVersion>2027</InventorVersion>
  <CopyInventorFiles>true</CopyInventorFiles>
  <CopyILogicFiles>false</CopyILogicFiles>
</PropertyGroup>

References are resolved automatically by the build/Autodesk.Inventor.Sdk.props file included in the package.

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Packaging

To create a NuGet package:

dotnet pack src/Autodesk.Inventor.Sdk.Nuget.csproj -c Release

The package will be generated in the dist directory and can be pushed to NuGet or an internal feed:

dotnet nuget push dist/Autodesk.Inventor.Sdk.*.nupkg --source "<YourFeed>"

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Folder Structure

graph TD
    A[lib]
    A --> B[native]
    B --> C2025[2025]
    B --> C2026[2026]
    B --> C2027[2027]

    C2025 --> D1_Inventor[Inventor]
    C2025 --> D1_iLogic[iLogic]

    C2026 --> D2_Inventor[Inventor]
    C2026 --> D2_iLogic[iLogic]

    C2027 --> D3_Inventor[Inventor]
    C2027 --> D3_iLogic[iLogic]

    E[build]
    E --> F1[Autodesk.Inventor.Sdk.props]
    E --> F2[Autodesk.Inventor.Sdk.targets]

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Architecture Notes

Inventor and its Interop assemblies are 64-bit only.
Ensure your project builds for x64 to avoid architecture warnings:

<PropertyGroup>
  <PlatformTarget>x64</PlatformTarget>
  <Prefer32Bit>false</Prefer32Bit>
</PropertyGroup>

License

© 2025 Autodesk, Inc.
Redistributed for development convenience only.
All Inventor DLLs remain the property of Autodesk.