public override unsafe int Read(byte[] buffer, int offset, int count)
{
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
if (offset > buffer.Length || (offset + count) > buffer.Length)
{
throw new ArgumentException();
}
if (count < 0)
{
throw new ArgumentOutOfRangeException("count");
}
VerifyHandle();
bool success;
uint read;
fixed(byte *pb = &buffer[offset])
{
NativeOverlapped overlapped = default(NativeOverlapped);
success = NativeMethods.SFileReadFile(_handle, new IntPtr(pb), unchecked ((uint)count), out read, ref overlapped);
}
if (!success)
{
int lastError = Win32Methods.GetLastError();
if (lastError != 38) // EOF
{
throw new Win32Exception(lastError);
}
}
return(unchecked ((int)read));
}
