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Task for void async

Context: For async methods that do not return a value, return Task. This allows the caller to await the operation.

using System.IO;
using System.Threading.Tasks;

public class DataService
{
    public async Task SaveDataAsync(string data)
    {
        await File.WriteAllTextAsync("file.txt", data);
    }
}

// Caller can await
// await new DataService().SaveDataAsync("content");

Why not `void`?

Returning Task allows the caller to:

Await completion.
Handle exceptions (exceptions are captured in the task).
Compose with other async operations.

Real-world usage example

Event handlers in UI: Use async void for events, but for all other async methods without return value, use Task.

Example: Async guidelines recommend Task over void.