CryptoStream.FlushAsync Method (CancellationToken)
Clears all buffers for the current stream asynchronously, causes any buffered data to be written to the underlying device, and monitors cancellation requests.
Assembly: mscorlib (in mscorlib.dll)
Return ValueType: System.Threading.Tasks.Task
A task that represents the asynchronous flush operation.
You must preface your call to FlushAsync with the await (C#) or Await (Visual Basic) operator to suspend execution of the method until the task is complete. For more information, see Asynchronous Programming with Async and Await (C# and Visual Basic).