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Async/Await: Beyond the Basics

Error Handling

Imagine ordering food and the waiter brings you the wrong dish. That's like an error in your async code. To handle this, we use try-catch blocks.

async Task<string> GetDataAsync()
{
    try
    {
        // ... your async code ...
    }
    catch (Exception ex)
    {
        Console.WriteLine("An error occurred: " + ex.Message);
        return "Error";
    }
}

Task Chaining

Think of Task chaining as a relay race. One runner passes the baton to the next. In code, one task's result becomes the input for the next.

async Task ProcessDataAsync()
{
    string data = await GetDataAsync();
    int processedData = ProcessData(data);
    await SaveDataAsync(processedData);
}

Best Practices

  • Use async and await for I/O bound operations (like network calls and file I/O).
  • Avoid async void methods unless you know exactly what you're doing.
  • Use ConfigureAwait(false) when appropriate to improve performance.

Conclusion

Async/await is a powerful tool for writing responsive and efficient C# code. By understanding error handling, task chaining, and best practices, you can harness its full potential. Remember, just like a well-coordinated kitchen staff, your async code should work smoothly to deliver the desired results.


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