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Message: <blockquote data-quote="M. Meganathan" data-source="post: 13284754">Hi,How to delete com port in DeviceI can able delete com port but it is not reflected in devicePlease help this issueCode://Registry to open sub keyMicrosoft.Win32.RegistryKey rkDevice = rkPorts.OpenSubKey(deviceid);//remove port from arraylist if unavailablestring port = rkDevice.GetValue("Port").ToString();int nullPos = port.IndexOf('\0');if (nullPos > -1){port = port.Substring(0, nullPos);}//Delete Exiting Com Portif (alPorts.Contains(port)){alPorts.Remove(port);}//Close Com DevicesrkDevice.Close();Any Wrong above code.</blockquote>