What is the difference between IAsyncDisposable and IDisposable?

Question

Accepted Answer

**IDisposable** — sync cleanup. **IAsyncDisposable** — async cleanup.

**IDisposable:**
- Synchronous.
- Dispose().
- Using statement.

**IAsyncDisposable:**
- Asynchronous.
- DisposeAsync().
- await using.

```csharp
// IDisposable
public class Resource : IDisposable
{
    public void Dispose() { /* cleanup */ }
}

// IAsyncDisposable
public class AsyncResource : IAsyncDisposable
{
    public async ValueTask DisposeAsync()
    {
        await CloseAsync();
    }
}
```

**Key:** IAsyncDisposable for async cleanup.

C#: What is the difference between IAsyncDisposable and IDisposable?