CryptoStream.WriteAsync Method (Byte, Int32, Int32, CancellationToken)
Writes a sequence of bytes to the current stream asynchronously, advances the current position within the stream by the number of bytes written, and monitors cancellation requests.
Assembly: mscorlib (in mscorlib.dll)
override WriteAsync : buffer:byte * offset:int * count:int * cancellationToken:CancellationToken -> Task
The buffer to write data from.
The zero-based byte offset in buffer from which to begin writing bytes to the stream.
The maximum number of bytes to write.
Return ValueType: System.Threading.Tasks.Task
A task that represents the asynchronous write operation.
buffer is null.
offset or count is negative.
The sum of offset and count is larger than the buffer length.
The stream does not support writing.
The stream has been disposed.
The stream is currently in use by a previous write operation.
You must preface your call to Asynchronous Programming with Async and Await (C# and Visual Basic).with the await (C#) or Await (Visual Basic) operator to suspend execution of the method until the task is complete. For more information, see
Available since 4.5