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FME Objects .NET 4 API Deprecation

Liz Sanderson
Liz Sanderson
  • Updated

Introduction

The FME Objects .NET 4 API was deprecated in FME 2024.0, with warnings when attempting to compile or build against it. It has been fully removed as of FME 2025.0, meaning the API is no longer available to compile or build against. FMEObjectsDotNet4.dll is no longer shipped with FME. Microsoft dropped support on January 12, 2016. The .NET API was used to create standalone apps that used FME Objects. There are no plans to support .NET 6. 

 

Workaround

An unsupported/untested workaround is to create a C+/CLI wrapper around the existing C++ API. 

If you are using the IFMEOWorkspaceRunner class to run workspaces, then executing fme.exe workspace.fmw is an alternative.

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