What are some advanced examples of async programming in C#?

What are some advanced examples of async programming in C#?

Advanced async programming in C# includes using async streams, cancellation tokens, and configuring await behavior. Would you like to see code examples?

Yes, please provide an example of using async streams.

Sure! Here's a simple example:

public async IAsyncEnumerable<int> GetNumbersAsync() {
    for (int i = 0; i < 10; i++) {
        await Task.Delay(100); // Simulate async work
        yield return i;
    }
}

You can consume this async stream using await foreach. Would you like to know more about cancellation tokens?

Absolutely! How do I implement cancellation tokens in async methods?

You can implement cancellation tokens by passing a CancellationToken to your async method. Here's an example:

public async Task LongRunningOperationAsync(CancellationToken cancellationToken) {
    for (int i = 0; i < 100; i++) {
        cancellationToken.ThrowIfCancellationRequested();
        await Task.Delay(100);
    }
}

You can cancel the operation by calling cancellationTokenSource.Cancel(). Would you like to explore more about configuring await?

Yes, that sounds interesting! What does configuring await mean?

Configuring await allows you to control how your async method resumes after an await. For example, using ConfigureAwait(false) can prevent deadlocks in certain contexts. Here's how you use it:

await someTask.ConfigureAwait(false);

This tells the compiler not to capture the current context. Would you like to dive deeper into any of these topics?