public override Task CopyToAsync(Stream destination, Int32 bufferSize, CancellationToken cancellationToken)
{
// The parameter checks must be in sync with the base version:
if (destination == null)
{
throw new ArgumentNullException("destination");
}
if (bufferSize <= 0)
{
throw new ArgumentOutOfRangeException("bufferSize", Environment.GetResourceString("ArgumentOutOfRange_NeedPosNum"));
}
if (!CanRead && !CanWrite)
{
throw new ObjectDisposedException(null, Environment.GetResourceString("ObjectDisposed_StreamClosed"));
}
if (!destination.CanRead && !destination.CanWrite)
{
throw new ObjectDisposedException("destination", Environment.GetResourceString("ObjectDisposed_StreamClosed"));
}
if (!CanRead)
{
throw new NotSupportedException(Environment.GetResourceString("NotSupported_UnreadableStream"));
}
if (!destination.CanWrite)
{
throw new NotSupportedException(Environment.GetResourceString("NotSupported_UnwritableStream"));
}
Contract.EndContractBlock();
return(_unmanagedStream.CopyToAsync(destination, bufferSize, cancellationToken));
}
public override Task CopyToAsync(Stream destination, int bufferSize, CancellationToken cancellationToken)
{
// The parameter checks must be in sync with the base version:
if (destination == null)
{
throw new ArgumentNullException(nameof(destination));
}
if (bufferSize <= 0)
{
throw new ArgumentOutOfRangeException(nameof(bufferSize), SR.ArgumentOutOfRange_NeedPosNum);
}
if (!CanRead && !CanWrite)
{
throw new ObjectDisposedException(null, SR.ObjectDisposed_StreamClosed);
}
if (!destination.CanRead && !destination.CanWrite)
{
throw new ObjectDisposedException(nameof(destination), SR.ObjectDisposed_StreamClosed);
}
if (!CanRead)
{
throw new NotSupportedException(SR.NotSupported_UnreadableStream);
}
if (!destination.CanWrite)
{
throw new NotSupportedException(SR.NotSupported_UnwritableStream);
}
return(_unmanagedStream.CopyToAsync(destination, bufferSize, cancellationToken));
}
