private void OnPrinterChanged(object sender, System.EventArgs e)
{
//Event handler for change in port
try {
if (this.mPrinter != null && this.mPrinter.On)
{
this.mPrinter.TurnOff();
}
this.mPrinter = DeviceFactory.CreatePrinter(this.cboPrinter.SelectedItem.ToString(), this.cboPort.SelectedItem.ToString());
if (this.mPrinter != null && this.mPrinter.Settings.PortName != null)
{
this.cboPort.SelectedItem = this.mPrinter.Settings.PortName;
this.cboBaud.SelectedItem = this.mPrinter.Settings.BaudRate.ToString();
this.cboDataBits.SelectedItem = this.mPrinter.Settings.DataBits.ToString();
this.cboParity.SelectedItem = this.mPrinter.Settings.Parity.ToString();
this.cboStopBits.SelectedItem = Convert.ToInt32(this.mPrinter.Settings.StopBits).ToString();
}
else
{
this.cboPort.SelectedIndex = 0;
this.cboBaud.SelectedIndex = 0;
this.cboDataBits.SelectedIndex = 0;
this.cboParity.SelectedIndex = 0;
this.cboStopBits.SelectedIndex = 0;
}
if (this.PrinterChanged != null)
{
this.PrinterChanged(this.mPrinter, EventArgs.Empty);
}
}
catch (Exception ex) { reportError(ex); }
finally { setUserServices(); }
}
public void ChangePrinter(string printerType, string portName)
{
//Change station printer
try {
if (printerType != "" && portName != "")
{
ILabelPrinter oPrinter = DeviceFactory.CreatePrinter(printerType, portName);
PortSettings oSettings = oPrinter.DefaultSettings;
NameValueCollection nvcPrinter = (NameValueCollection)ConfigurationManager.GetSection("station/printer");
oSettings.PortName = portName;
oSettings.BaudRate = Convert.ToInt32(nvcPrinter["BaudRate"]);
oSettings.DataBits = Convert.ToInt32(nvcPrinter["DataBits"]);
switch (nvcPrinter["Parity"].ToString().ToLower())
{
case "none": oSettings.Parity = Parity.None; break;
case "even": oSettings.Parity = Parity.Even; break;
case "odd": oSettings.Parity = Parity.Odd; break;
}
switch (Convert.ToInt32(nvcPrinter["StopBits"]))
{
case 1: oSettings.StopBits = StopBits.One; break;
case 2: oSettings.StopBits = StopBits.Two; break;
}
switch (nvcPrinter["Handshake"].ToString().ToLower())
{
case "none": oSettings.Handshake = Handshake.None; break;
case "rts/cts": oSettings.Handshake = Handshake.RequestToSend; break;
case "xon/xoff": oSettings.Handshake = Handshake.XOnXOff; break;
}
oPrinter.Settings = oSettings;
//Atach printer to sort station and turn-on
if (this.mLabelPrinter != null)
{
this.mLabelPrinter.TurnOff();
}
this.mLabelPrinter = oPrinter;
this.mLabelPrinter.TurnOn();
}
}
catch (System.IO.IOException) { }
catch (ApplicationException ex) { throw ex; }
catch (Exception ex) { throw new ApplicationException("Unexpected error while setting the printer.", ex); }
finally { if (this.PrinterChanged != null)
{
this.PrinterChanged(this, new EventArgs());
}
}
}
public void SetLabelPrinter(string printerType, string portName)
{
//
try {
//Validate printer type and port name
if (!DeviceFactory.PrinterTypeExists(printerType))
{
throw new ArgumentException("'" + printerType + "' is an invalid printer type.");
}
if (portName.Length <= 0)
{
throw new ArgumentException("'" + portName + "' is an invalid port name.");
}
//Create/change the attached label printer
if (this.mPrinter != null)
{
//A current printer exists: check for change to printer type
if (printerType != this.mPrinter.Type)
{
//New printer type: disconnect current printer and attach a new one
//with the same settings (except use the specified port name)
bool bOn = this.mPrinter.On;
if (bOn)
{
this.mPrinter.TurnOff();
}
PortSettings settings = this.mPrinter.Settings;
settings.PortName = portName;
ILabelPrinter printer = DeviceFactory.CreatePrinter(printerType, portName);
if (printer == null)
{
throw new ApplicationException("Printer " + printerType + " on port " + portName + " could not be created.");
}
printer.Settings = settings;
this.mPrinter = printer;
if (bOn)
{
this.mPrinter.TurnOn();
}
}
else
{
//Same printer type: check for change in printer port
if (portName != this.mPrinter.Settings.PortName)
{
//Change port on existing printer
PortSettings settings = this.mPrinter.Settings;
settings.PortName = portName;
this.mPrinter.Settings = settings;
}
}
}
else
{
//Create a new label printer
this.mPrinter = DeviceFactory.CreatePrinter(printerType, portName);
if (this.mPrinter == null)
{
throw new ApplicationException("Printer " + printerType + " on port " + portName + " could not be created.");
}
//Set printer configuration; start with printer's default settings
PortSettings settings = this.mPrinter.DefaultSettings;
NameValueCollection nvcPrinter = (NameValueCollection)ConfigurationManager.GetSection("station/printer");
settings.PortName = portName;
settings.BaudRate = Convert.ToInt32(nvcPrinter["BaudRate"]);
settings.DataBits = Convert.ToInt32(nvcPrinter["DataBits"]);
switch (nvcPrinter["Parity"].ToString().ToLower())
{
case "none": settings.Parity = System.IO.Ports.Parity.None; break;
case "even": settings.Parity = System.IO.Ports.Parity.Even; break;
case "odd": settings.Parity = System.IO.Ports.Parity.Odd; break;
}
switch (Convert.ToInt32(nvcPrinter["StopBits"]))
{
case 1: settings.StopBits = System.IO.Ports.StopBits.One; break;
case 2: settings.StopBits = System.IO.Ports.StopBits.Two; break;
}
switch (nvcPrinter["Handshake"].ToString().ToLower())
{
case "none": settings.Handshake = System.IO.Ports.Handshake.None; break;
case "rts/cts": settings.Handshake = System.IO.Ports.Handshake.RequestToSend; break;
case "xon/xoff": settings.Handshake = System.IO.Ports.Handshake.XOnXOff; break;
}
this.mPrinter.Settings = settings;
}
}
catch (Exception ex) { throw new ApplicationException("Unexpected error setting the label printer.", ex); }
finally { if (this.PrinterChanged != null)
{
this.PrinterChanged(this, new EventArgs());
}
}
}
