Function Syntax: AECVersion Version: 1.0 Date: 12.06.2026 2:35:14PM https://forums.autodesk.com/t5/civil-3d-customization-forum/dynamically-get-aec-library-versions-aecbaseapplication/td-p/12953062 🚀 AECVersionPlugin - AutoCAD Civil 3D AEC Version Diagnostic Project AECVersionPlugin is a Visual Studio C# project configuration for building an AutoCAD and Civil 3D .NET plugin DLL. It is designed as the build foundation for the AECVERSION diagnostic command workflow. Command 🧰 Load AECVersionPlugin.dll with NETLOAD, then run AECVERSION from the AutoCAD command line. Project Configuration 📦 Targets .NET Framework 4.8 using the SDK-style Microsoft.NET.Sdk project format. 🔧 Builds as a Library so the output is a loadable AutoCAD plugin DLL. 📐 Uses x64 platform targeting to match the 64-bit AutoCAD and Civil 3D runtime. 🪟 Enables Windows Forms for dialog-based diagnostic tools and result windows. 🧩 Uses C# language version 9.0 with nullable disabled for traditional AutoCAD plugin compatibility. AutoCAD References 🔐 accoremgd.dll - AutoCAD runtime command registration and command API reference. 📊 acdbmgd.dll - AutoCAD database managed API reference. 📘 acmgd.dll - AutoCAD application and document manager API reference. ✅ All Autodesk references are configured with Copy Local = false so AutoCAD loads its own runtime assemblies. SEO Optimized Description 🔍 AECVersionPlugin is useful for CAD managers, Civil 3D administrators, BIM support teams, and AutoCAD plugin developers who need a managed AEC version diagnostic plugin project. 📌 The project supports AutoCAD .NET plugin deployment, Civil 3D diagnostic workflows, AEC version checking, Visual Studio build setup, and managed DLL loading through NETLOAD. Important Note The uploaded project file references AutoCAD 2024 paths. Update the HintPath values when building against another AutoCAD or Civil 3D installation. Only the project file was provided, so this description documents the build configuration and loading workflow rather than full C# command implementation logic.