Does the .net framework provides async methods for working with the file-system?

Question

Does the .net framework has an async built-in library/assembly which allows to work with the file system (e.g. File.ReadAllBytes, File.WriteA

Answer 1

It already does it. See for example Using Async for File Access MSDN article.

private async Task WriteTextAsync(string filePath, string text)
{
    byte[] encodedText = Encoding.Unicode.GetBytes(text);

    using (FileStream sourceStream = new FileStream(filePath,
        FileMode.Append, FileAccess.Write, FileShare.None,
        bufferSize: 4096, useAsync: true))
    {
        await sourceStream.WriteAsync(encodedText, 0, encodedText.Length);
    };
}