public VirtualPrinter(ISystemConfiguration systemConfiguration, IPrinterSupport printerSupport)
{
Precondition.NotNull(systemConfiguration, "systemConfiguration");
Precondition.NotNull(printerSupport, "printerSupport");
this.configuration = systemConfiguration.PrinterConfiguration;
this.printerSupport = printerSupport;
}
/// <summary>
/// Updates the printer instance to use a new port
/// </summary>
/// <param name="currentPort">The name of the current port in use</param>
/// <param name="newPort">The new port to listen on</param>
/// <param name="portCreated">True if the port has already been created</param>
/// <param name="printerName">The name of the printer</param>
/// <returns>True if the port was created</returns>
public bool UpdatePort(string currentPort, string newPort, bool portCreated, string printerName)
{
Precondition.NotNull(currentPort, "currentPort");
Precondition.NotNullOrEmpty(newPort, "newPort");
Precondition.NotNullOrEmpty(printerName, "printerName");
bool created = false;
if (!this.PortExists(newPort))
{
this.AddPort(newPort);
created = true;
}
ManagementObjectSearcher searcher =
new ManagementObjectSearcher(string.Format("SELECT * FROM Win32_Printer WHERE Name='{0}'", printerName));
string priorPort = string.Empty;
foreach (ManagementBaseObject printer in searcher.Get())
{
var portNameObj = printer["PortName"];
priorPort = portNameObj == null ? string.Empty : portNameObj.ToString();
printer["PortName"] = newPort;
ManagementObject printerObject = printer as ManagementObject;
if (printerObject != null)
{
printerObject.Put(); // Call put to save the settings.
}
}
/* If this application instance created the port, and the new one is different,
* delete the old one */
if (priorPort != newPort && !string.IsNullOrEmpty(priorPort))
{
this.DeletePort(priorPort);
}
return(created);
}