Why doesn't my C# Resource class appear in the Create New menu?

Without [GlobalClass], Godot doesn't auto-register the type into ClassDB. Add the attribute and rebuild. The class will then appear in the Inspector's New Resource picker and in the Asset Browser's Create menu.

What if I rely on a static constructor?

Editor cold-start may not trigger your static .cctor before Godot scans for types. Move registration to a [GlobalClass] attribute (compile-time) instead of relying on runtime static init.

Where do I see what's registered?

Editor menu → Project → Tools → Open Editor Data Folder. Look at .godot/mono/temp/. The list of registered types is rebuilt on each compile.

Fix: Godot 4 C# Custom Class Not Available After Static Init

Quick answer: Apply [GlobalClass] to register at compile time. Don’t rely on static constructors for registration — the editor scans before they run. Build the project after adding the attribute.

You add a custom Resource class. Inspector’s New Resource menu doesn’t show it. You added a static constructor that calls some registration helper; it doesn’t run at editor cold-start.

The Symptom

C# class compiles fine but isn’t available in the Inspector dropdown for creating new instances. Or only available after running the project once.

The Fix

using Godot;

[GlobalClass]
[Tool]   // optional, for editor-active behavior
public partial class EnemyDef : Resource
{
    [Export] public int Health { get; set; } = 100;
    [Export] public string DisplayName { get; set; }
}

Build (Ctrl+B). Inspector’s “New EnemyDef” appears in the resource picker.

Custom Editor Categories

You can specify a category and icon:

[GlobalClass, Icon("res://icons/enemy.svg")]
public partial class EnemyDef : Resource { ... }

The icon shows in the Asset Browser, making custom resources visually distinct.

Verifying

After Build, right-click in FileSystem → New Resource. Search for your class name. It should appear. Confirms registration.

“[GlobalClass]. Build. Class is registered.”

Related Issues

For C# Resource references after rebuild, see references after rebuild. For C# Export Array, see Export Array.

Attribute. Build. Type registers.