---
title: OnAssemblyUnloadingAttribute()
product: Unity Editor
version: '7000.0'
latest_version: '7000.0'
status: This page documents version 7000.0. The latest version is 7000.0.
canonical: https://docs.unity.com/en-us/engine/7000.0/script-reference/unity/scripting/lifecyclemanagement/onassemblyunloadingattribute/ctor
latest_url: https://docs.unity.com/en-us/engine/7000.0/script-reference/unity/scripting/lifecyclemanagement/onassemblyunloadingattribute/ctor.md
last_updated: 2026-10-20
generated_at: 2026-11-04T09:12:56.747Z
locale: en-us
---

# OnAssemblyUnloadingAttribute()

> Marks the decorated static method to be invoked before the containing assembly is unloaded.

## Definition

* **Type:** Constructor
* **Namespace:** [Unity.Scripting.LifecycleManagement](/engine/7000.0/script-reference/unity/scripting/lifecyclemanagement.md)
* **Assembly:** Unity.Scripting

```csharp
public OnAssemblyUnloadingAttribute()
```