eighty eight percent nerd.

I have a StreamWriter which is responsible for writing out to my test file, however, there is a chance that my test app may be killed before completed. Whenever this occurred, it seemed that my test file was blank! Even though I knew that I had written some data to the stream…

Turns out I misunderstood exactly how the StreamWriter worked. The data is actually written into a buffer until you explicitly call Flash() or Close(). Because my Close() call was never being called when the app was killed, this data was never actually being flushed from the buffer into the file! Doh!

_resultStreamWriter.WriteLine("Write me now!!!");
_resultStreamWriter.Flush();

MSDN – StreamWriter.Flush Method