Why does my Godot C# Export property not show in Inspector?

The class must be partial and inherit from a Godot type, the project must be built (Build button in editor), and the script must compile cleanly. Private fields with [Export] also work but auto-properties may be filtered.

How do I add tooltips and ranges to Godot C# exports?

Use [Export(PropertyHint.Range, '0,100,1')] for sliders. [ExportCategory] for sections. [ExportSubgroup] for indented groups. Tooltips come from XML doc comments above the property.

Why does the Inspector show old property names after rename?

Godot caches property metadata. Build the C# project, then in the editor click Project > Reload Current Project to refresh the Inspector cache.

Fix: Godot C# Export Property Not Showing in Inspector

Quick answer: The class must be declared partial. Build the C# project (Build button in editor) after each script change. Use [Export] on fields or auto-properties; for ranges use [Export(PropertyHint.Range, "0,100")].

Here is how to fix Godot 4 C# [Export] attributes that compile but never appear in the Inspector. Three things must align: partial class, successful build, and supported property type.

The Symptom

Add [Export] to a field. Build succeeds. Open the scene; the property does not appear in Inspector. Other exports on the same script may still show.

What Causes This

Class not partial. Godot generates partial code that combines with yours; non-partial classes do not get the metadata.

Project not built. Inspector reads compiled metadata, not source. Without a build, new exports are invisible.

Unsupported type. Generic Lists need specific syntax; some custom types need [GlobalClass] or wrappers.

The Fix

Step 1: Mark class partial.

using Godot;

public partial class Player : CharacterBody3D
{
    [Export] public float Speed { get; set; } = 5f;
    [Export(PropertyHint.Range, "0,100,1")] public int Health = 100;
    [Export] public Texture2D Icon;
}

Step 2: Build the C# project. Click the Build hammer icon in the Godot editor. Or run dotnet build from terminal in the project folder. After build, Inspector refreshes.

Step 3: Use ExportCategory and ExportSubgroup for organization.

[ExportCategory("Movement")]
[Export] public float WalkSpeed = 5f;
[Export] public float RunSpeed = 10f;

[ExportCategory("Combat")]
[Export] public int AttackPower = 10;

Step 4: For arrays/lists, use Godot.Collections.

using Godot.Collections;

[Export] public Array<Resource> Items;
[Export] public Dictionary<string, int> Counters;

Godot.Collections types serialize through the engine; System.Collections.Generic versions may not.

Step 5: Reload Project after major refactors. Project → Reload Current Project to refresh metadata. Combined with Build, restores Inspector to a clean state.

“partial. Build. Right collection types. Inspector shows it all.”

Related Issues

For C# signal disconnect, see C# Signal Disconnect. For C# disposed errors, see GodotObject Disposed.

partial class. Build C# project. Godot.Collections for arrays. Exports appear.