异步文件流

Question

我正在尝试制作异步。在WriteText方法中，sourceStream将使用async。，但我在useAsync

时收到错误

async private 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))
            {
              await  sourceStream.WriteAsync(encodedText, 0, encodedText.Length);
            };
        }

Answer 1

更改useAsync

的useAsync:true