ReadAsync() [2/3]

override Task< int > System.IO.MemoryStream.ReadAsync ( byte[] buffer, int offset, int count, CancellationToken cancellationToken )

inlinevirtualinherited

Reimplemented from System.IO.Stream.

Reimplemented in System.IO.UnmanagedMemoryStreamWrapper.

Definition at line 364 of file MemoryStream.cs.

    {
        Stream.ValidateBufferArguments(buffer, offset, count);
        if (cancellationToken.IsCancellationRequested)
        {
            return Task.FromCanceled<int>(cancellationToken);
        }
        try
        {
            int num = Read(buffer, offset, count);
            Task<int> lastReadTask = _lastReadTask;
            return (lastReadTask != null && lastReadTask.Result == num) ? lastReadTask : (_lastReadTask = Task.FromResult(num));
        }
        catch (OperationCanceledException exception)
        {
            return Task.FromCanceled<int>(exception);
        }
        catch (Exception exception2)
        {
            return Task.FromException<int>(exception2);
        }
    }

References System.IO.MemoryStream._lastReadTask, System.buffer, System.cancellationToken, System.count, System.exception, System.Threading.Tasks.Task< TResult >.FromCanceled(), System.Threading.Tasks.Task< TResult >.FromException(), System.offset, System.IO.Read, System.Threading.Tasks.Task< TResult >.Result, and System.IO.Stream.ValidateBufferArguments().