private bool IsPrinterAvailable(string driverName)
{
ZBRPrinter printer = null;
try {
printer = new ZBRPrinter();
int error = 0;
int result = printer.Open(driverName, out error);
if ((result == 1) && (error == 0)) {
return true;
}
} catch (Exception e) {
MessageBox.Show(e.ToString());
} finally {
printer = null;
}
return false;
}
private bool IsPrinterAvailable(string driverName)
{
//boolean method to test whether the printer is available using driverName parameter
ZBRPrinter printer = null; //creates printer variable from the ZBRPrinter.cs class initialized to null
try {
printer = new ZBRPrinter(); //creates new ZBRPrinter object and stores in printer
int error = 0; //initial value of errors is 0 meaning printer is available, but will change if errors are detected
int result = printer.Open(driverName, out error); //passes IsPrinterAvailable method param as an argument to Open method of printer object and stores in result variable
if ((result == 1) && (error == 0)) { //if the result variable is set to 1 and there are no errors...
return true; //return true - the printer is available
}
} catch (Exception e) { //exception handler
MessageBox.Show(e.ToString()); //catches and displays resulting errors to prevent program crash
} finally { //finally block runs whether there is an exception or not
printer = null; //sets printer object to null after it has been used to determine if printer is available
}
return false; //else return false - the printer is unavailable
}