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c3d-project-setup

Configure Civil 3D 2026 .NET plugin projects with references, namespaces, and debugging workflows.

3|Updated Feb 17, 2026
Search Tags:#debugging#plugin#dotnet#references#project-setup#autocad#civil-3d
One-click install
npx skills add https://github.com/hebackus/c3d-api-plugin --skill c3d-project-setup
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: c3d-project-setup
Source: https://github.com/hebackus/c3d-api-plugin/tree/main/skills/c3d-project-setup
Command: npx skills add https://github.com/hebackus/c3d-api-plugin --skill c3d-project-setup

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Configures and troubleshoots Civil 3D .NET plugin projects by standardizing references, namespaces, and debugging workflows to reduce setup time and errors.

Core Features & Use Cases

  • Project scaffolding: Establishes a Class Library targeting .NET 8.0 (or .NET Framework 4.8 for older C3D versions) with the required references and namespaces for Civil 3D/.NET API development.
  • Reference management: Documents required DLLs and ensures Copy Local is set to False to avoid runtime conflicts when loaded by Civil 3D.
  • Debugging setup: Provides a runnable blueprint for debugging AutoCAD/Civil 3D plugins with NETLOAD and guidance on environment configuration.
  • Use Case: When starting a new Civil 3D plugin project, use this skill to configure references, namespaces, and debugging prerequisites consistently.

Quick Start

Create a new Civil 3D plugin project using the recommended templates and configure acad_path.props with the specified ARx, OMFM, and Aecc paths, then set Copy Local to False for Autodesk DLLs.

Frequently Asked Questions about c3d-project-setup

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I set up a Civil 3D 2026 .NET plugin project from scratch?▼

To set up a Civil 3D 2026 .NET plugin project, create a Class Library targeting .NET 8.0, configure the x64 platform, map required ARx, OMFM, and Aecc paths via acad_path.props, and set Copy Local to False for Autodesk DLLs.

Why does my Civil 3D plugin crash or fail to load when using NETLOAD?▼

Civil 3D plugin loading conflicts often occur when Copy Local is not set to False for Autodesk DLLs, causing runtime version mismatches; ensuring Copy Local is False and correctly mapping references in acad_path.props resolves these load failures.

What .NET framework version does Civil 3D 2026 require for plugin development?▼

Civil 3D 2026 plugin development requires a Class Library project targeting .NET 8.0, while older Civil 3D versions require targeting the .NET Framework 4.8 platform.

How do I configure debugging for an AutoCAD Civil 3D .NET plugin?▼

To configure debugging for a Civil 3D .NET plugin, establish a runnable blueprint that launches AutoCAD, uses the NETLOAD command to load the compiled DLL, and verifies the environment configuration and explicit required namespaces.

Do I need to set Copy Local to False for Autodesk DLLs in Civil 3D plugin projects?▼

Yes, you must set Copy Local to False for Autodesk DLLs in Civil 3D plugin projects to avoid runtime conflicts and ensure the plugin references the correct environment libraries loaded by Civil 3D.

What namespaces are required for Civil 3D .NET API plugin development?▼

Civil 3D .NET API plugin development requires explicit namespaces mapped through the acad_path.props file, covering the specified ARx, OMFM, and Aecc paths to successfully establish project scaffolding.

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