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Utf8JsonWriter.FlushAsync(CancellationToken) Method


Asynchronously commits the JSON text written so far, which makes it visible to the output destination.

public System.Threading.Tasks.Task FlushAsync (System.Threading.CancellationToken cancellationToken = default);
member this.FlushAsync : System.Threading.CancellationToken -> System.Threading.Tasks.Task
Public Function FlushAsync (Optional cancellationToken As CancellationToken = Nothing) As Task



The token to monitor for cancellation requests. The default value is None.


A task representing the asynchronous flush operation.


This instance has been disposed.

The cancellation token was canceled. This exception is stored into the returned task.


In the case of IBufferWriter, this advances the underlying IBufferWriter<T> based on what has been written so far.

In the case of Stream, this writes the data to the stream and flushes it asynchronously, while monitoring cancellation requests.

This method stores in the task it returns all non-usage exceptions that the method's synchronous counterpart can throw. If an exception is stored into the returned task, that exception will be thrown when the task is awaited. Usage exceptions, such as ArgumentException, are still thrown synchronously. For the stored exceptions, see the exceptions thrown by Flush().

Applies to