How to Forcefully close SerialPort Connection?
<p>I have device which is connect to PC via USB Serial communication. I am performing following steps</p>

<ol>
<li>Start Device (Power On)</li>
<li>Device will detected in my PC as COMx name</li>
<li>Start my application</li>
<li>On base of COM PID/VID, I connect to device</li>
<li>Perform communication. (Up to this I am not facing any problem)</li>
<li>when I switch off device, device is disconnected but I cannot able close connection.</li>
<li>When I again start(Switch on) device, Device is detected but my application cannot able to connect to COMx(device). It throws IOException "COMx does not exist"</li>
</ol>

<p>So I think I have some way to close communication port forcefully.</p>

<p>Any help is appreciated</p>

<p>Thanks</p>
