Await using in C#8

For a long time, the ‘using’ statement in C# introduced some convenience when Disposing classes implementing the IDisposable interface.

The following statement:

	using(var disposable = new Disposable())
	{
	}

view raw using.cs hosted with ❤ by GitHub

is syntactic sugar for:

	IDisposable disposable = new Disposable();
	try
	{
	// Do Something...
	}
	finally
	{
	disposable.Dispose();
	}

view raw using2.cs hosted with ❤ by GitHub

In C# 8.0 a new System.IAsyncDisposable interface was introduced. This interface enables asynchronous cleanup operations.

To use it you need to use the ‘await using’ statement:

	await using (var disposable = new AsyncDisposable())
	{
	// Do Something...
	}

view raw awaitusing.cs hosted with ❤ by GitHub

that is syntactic sugar for:

	IAsyncDisposable disposable = new AsyncDisposable();
	try
	{
	// Do Something...
	}
	finally
	{
	await disposable.DisposeAsync();
	}

view raw awaitusing2.cs hosted with ❤ by GitHub