public class LocalPrinter        {            private static PrintDocument fPrintDocument = new PrintDocument();            /// <summary>               /// 获取本机默认打印机名称               /// </summary>               public static String DefaultPrinter            {                get { return fPrintDocument.PrinterSettings.PrinterName; }            }            /// <summary>               /// 获取本机的打印机列表。列表中的第一项就是默认打印机。               /// </summary>               public static List<String> GetLocalPrinters()            {                List<String> fPrinters = new List<string>();                fPrinters.Add(DefaultPrinter); // 默认打印机始终出现在列表的第一项                   foreach (String fPrinterName in PrinterSettings.InstalledPrinters)                {                    if (!fPrinters.Contains(fPrinterName))                        fPrinters.Add(fPrinterName);                }                return fPrinters;            }        }            foreach (String fPrinterName in LocalPrinter.GetLocalPrinters())            {                cbxPos1.Items.Add(fPrinterName);                cxbA41.Items.Add(fPrinterName);            }