public unsafe void Write(byte[] writeBuffer)
{
uint bytesWritten = 0;
fixed(byte *inBuffer = writeBuffer)
{
var success = false;
try
{
success = InteropKernel32.WriteFile(_writeHandle,
inBuffer,
(uint)writeBuffer.Length,
ref bytesWritten,
null);
}
catch (ObjectDisposedException)
{
throw new Exception("File handle already closed");
}
if (!success)
{
HandleIOError(false);
}
}
}
public unsafe void WriteOverlapped(byte[] writeBuffer)
{
var completedEvent = new ManualResetEvent(false);
uint bytesWritten = 0;
var outOverlapped = new Overlapped();
outOverlapped.EventHandleIntPtr = completedEvent.SafeWaitHandle.DangerousGetHandle();
NativeOverlapped *outNativeOverlapped = outOverlapped.Pack(null, null);
try
{
// send the data to the device
fixed(byte *inBuffer = writeBuffer)
{
var success = false;
try
{
success = InteropKernel32.WriteFile(_writeHandle,
inBuffer,
(uint)writeBuffer.Length,
ref bytesWritten,
outNativeOverlapped);
}
catch (ObjectDisposedException)
{
throw new Exception("File handle already closed");
}
if (!success)
{
HandleIOError(true);
CancelOverlapped(_writeHandle, completedEvent);
}
}
}
finally
{
Overlapped.Free(outNativeOverlapped);
}
}