How do I use async and await in C#?

How do I use async and await in C#?

In C#, you can use the async keyword to define an asynchronous method, and the await keyword to call an asynchronous operation. This allows your program to run tasks without blocking the main thread.

Can you give me a simple example?

Sure! Here's a basic example:

public async Task<string> GetDataAsync() {
    await Task.Delay(1000); // Simulates a delay
    return "Data retrieved!";
}

What happens if I don't use await?

If you don't use await, the method will return a Task immediately, and the code after the await will run asynchronously, which may lead to unexpected behavior.

Are there any best practices for using async/await?

Yes! Some best practices include:

1. Always use await for asynchronous calls.
2. Avoid blocking calls in async methods.
3. Use ConfigureAwait(false) in library code to avoid deadlocks.