/// <summary>
/// Close the port if needed and save preferences.
/// </summary>
private void Form1_FormClosing(object sender, System.Windows.Forms.FormClosingEventArgs e)
{
UserPort1.CloseComPort(UserPort1.SelectedPort);
}
/// <summary>
/// Saves the passed port parameters.
/// Called when the user clicks OK on PortSettingsDialog.
/// </summary>
private void SetPortParameters(string userPort, int userBitRate, Handshake userHandshake)
{
try
{
// Don't do anything if the system has no COM ports.
if (ComPorts.comPortExists)
{
if (MyPortSettingsDialog.ParameterChanged())
{
// One or more port parameters has changed.
if ((string.Compare(MyPortSettingsDialog.oldPortName, userPort, true) != 0))
{
// The port has changed.
// Close the previously selected port.
UserPort1.PreviousPort = UserPort1.SelectedPort;
UserPort1.CloseComPort(UserPort1.SelectedPort);
// Set SelectedPort to the current port.
UserPort1.SelectedPort.PortName = userPort;
UserPort1.PortChanged = true;
}
// Set other port parameters.
UserPort1.SelectedPort.BaudRate = userBitRate;
UserPort1.SelectedPort.Handshake = userHandshake;
MyPortSettingsDialog.SavePortParameters();
UserPort1.ParameterChanged = true;
}
else
{
UserPort1.ParameterChanged = false;
}
}
}
catch (InvalidOperationException ex)
{
UserPort1.ParameterChanged = true;
DisplayException(ModuleName, ex);
}
catch (UnauthorizedAccessException ex)
{
UserPort1.ParameterChanged = true;
DisplayException(ModuleName, ex);
// This exception can occur if the port was removed.
// If the port was open, close it.
UserPort1.CloseComPort(UserPort1.SelectedPort);
}
catch (System.IO.IOException ex)
{
UserPort1.ParameterChanged = true;
DisplayException(ModuleName, ex);
}
}