// event for if there is no pages
private void NoPages(object sender, PrinterEventArgs e)
{
PrinterUserControl printer = sender as PrinterUserControl;
if (printer != null)
{
// if theis is a critical event send an appropriate message box
if (e.Critical == true)
{
printer.pageLabel.Foreground = Brushes.Red;
string message = "at: " + e.Time + '\n' + "message from printer: " + e.Error;
string caption = e.PrinterName + " Page Missing!!!";
MessageBoxButton buttons = MessageBoxButton.OK;
MessageBoxImage icon = MessageBoxImage.Error;
MessageBoxResult result = MessageBox.Show(message, caption, buttons, icon);
// if press OK switch printer
if (result == MessageBoxResult.OK)
{
printer.AddPages();
queue.Enqueue(CourentPrinter);
CourentPrinter = queue.Dequeue();
}
}
}
}
// event for if there is no ink
private void lowInk(object sender, PrinterEventArgs e)
{
PrinterUserControl printer = sender as PrinterUserControl;
if (printer != null)
{
// if theis is a critical event - there is no ink
// send an appropriate message box
if (e.Critical == true)
{
printer.inkLabel.Foreground = Brushes.Red;
string message = "at: " + e.Time + '\n' + "message from printer: " + e.Error;
string caption = e.PrinterName + " Ink Missing!!!";
MessageBoxButton buttons = MessageBoxButton.OK;
MessageBoxImage icon = MessageBoxImage.Error;
MessageBoxResult result = MessageBox.Show(message, caption, buttons, icon);
// if press OK
if (result == MessageBoxResult.OK)
{
printer.AddInk();
// if didn't switched printers yet
// switch printers
if (printer == CourentPrinter)
{
queue.Enqueue(CourentPrinter);
CourentPrinter = queue.Dequeue();
}
}
}
// if this is not a critical event - lwo ink
else
{
// change the color of the label
// according to the amount of ink
if (printer.InkCount > 10)
{
printer.inkLabel.Foreground = Brushes.Yellow;
}
else
{
printer.inkLabel.Foreground = Brushes.Orange;
}
// send an appropriate message box
string message = "at: " + e.Time + '\n' + "message from printer: " + e.Error;
string caption = e.PrinterName + " Ink Missing!!!";
MessageBoxButton buttons = MessageBoxButton.OK;
MessageBoxImage icon = MessageBoxImage.Warning;
MessageBoxResult result = MessageBox.Show(message, caption, buttons, icon);
}
}
}
// intialize the printers
private void inttializePrinters()
{
queue = new Queue <PrinterUserControl>();
// add the printers to the queue
foreach (Control item in printersGrid.Children)
{
if (item is PrinterUserControl)
{
PrinterUserControl printer = item as PrinterUserControl;
// add the events
printer.PageMissing += NoPages;
printer.InkEmpty += lowInk;
queue.Enqueue(printer);
}
}
CourentPrinter = queue.Dequeue();
}