检查打印机状态

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public class Printer {     /// <summary>      /// 构造函数      /// </summary>      /// <param name="name">打印机名称</param>      public Printer(string name)     {         this.printer_name = name;     }       // 设备名：EPSON R330 Series      private string _printer_name;     /// <summary>      /// 打印机名称      /// </summary>      public string printer_name     {         get         {             return _printer_name;         }         set         {             _printer_name = value;         }     }       /// <summary>      /// 获取打印机状态      /// </summary>      /// <returns></returns>      public int getStatus()     {         string path = @"win32_printer.DeviceId='" + this.printer_name + "'";         ManagementObject printer = new ManagementObject(path);         printer.Get();         return Convert.ToInt32(printer.Properties["PrinterStatus"].Value);     }           public static string GetPrinterStatus(string PrinterName)     {         int intValue = GetPrinterStatusInt(PrinterName);         string strRet = string.Empty;         switch (intValue)         {             case 0:                 strRet = "准备就绪（Ready）";                 break;             case 0x00000200:                 strRet = "忙(Busy）";                 break;             case 0x00400000:                 strRet = "被打开（Printer Door Open）";                 break;             case 0x00000002:                 strRet = "错误(Printer Error）";                 break;             case 0x0008000:                 strRet = "初始化(Initializing）";                 break;             case 0x00000100:                 strRet = "正在输入,输出（I/O Active）";                 break;             case 0x00000020:                 strRet = "手工送纸（Manual Feed）";                 break;             case 0x00040000:                 strRet = "无墨粉（No Toner）";                 break;             case 0x00001000:                 strRet = "不可用（Not Available）";                 break;             case 0x00000080:                 strRet = "脱机（Off Line）";                 break;             case 0x00200000:                 strRet = "内存溢出（Out of Memory）";                 break;             case 0x00000800:                 strRet = "输出口已满（Output Bin Full）";                 break;             case 0x00080000:                 strRet = "当前页无法打印（Page Punt）";                 break;             case 0x00000008:                 strRet = "塞纸（Paper Jam）";                 break;             case 0x00000010:                 strRet = "打印纸用完（Paper Out）";                 break;             case 0x00000040:                 strRet = "纸张问题（Page Problem）";                 break;             case 0x00000001:                 strRet = "暂停（Paused）";                 break;             case 0x00000004:                 strRet = "正在删除（Pending Deletion）";                 break;             case 0x00000400:                 strRet = "正在打印（Printing）";                 break;             case 0x00004000:                 strRet = "正在处理（Processing）";                 break;             case 0x00020000:                 strRet = "墨粉不足（Toner Low）";                 break;             case 0x00100000:                 strRet = "需要用户干预（User Intervention）";                 break;             case 0x20000000:                 strRet = "等待（Waiting）";                 break;             case 0x00010000:                 strRet = "热机中（Warming Up）";                 break;             default:                 strRet = "未知状态（Unknown Status）";                 break;         }         return strRet;     }     [DllImport("winspool.Drv", EntryPoint = "OpenPrinter", SetLastError = true, CharSet = CharSet.Unicode, ExactSpelling = false, CallingConvention = CallingConvention.StdCall),               SuppressUnmanagedCodeSecurityAttribute()]       internal static extern bool OpenPrinter([MarshalAs(UnmanagedType.LPTStr)] string printerName, out IntPtr phPrinter, ref structPrinterDefaults pd);     [DllImport("winspool.Drv", EntryPoint = "GetPrinterA", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]     internal static extern bool GetPrinter(IntPtr hPrinter, int dwLevel, IntPtr pPrinter, int dwBuf, out int dwNeeded);       [DllImport("winspool.Drv", EntryPoint = "ClosePrinter", SetLastError = true, CharSet = CharSet.Unicode, ExactSpelling = false, CallingConvention = CallingConvention.StdCall), SuppressUnmanagedCodeSecurityAttribute()]     internal static extern bool ClosePrinter(IntPtr phPrinter);     internal static int GetPrinterStatusInt(string PrinterName)     {         int intRet = 0;         IntPtr hPrinter;         structPrinterDefaults defaults = new structPrinterDefaults();           if (OpenPrinter(PrinterName, out hPrinter, ref defaults))         {             int cbNeeded = 0;             bool bolRet = GetPrinter(hPrinter, 2, IntPtr.Zero, 0, out cbNeeded);             if (cbNeeded > 0)             {                 IntPtr pAddr = Marshal.AllocHGlobal((int)cbNeeded);                 bolRet = GetPrinter(hPrinter, 2, pAddr, cbNeeded, out cbNeeded);                 if (bolRet)                 {                     PRINTER_INFO_2 Info2 = new PRINTER_INFO_2();                       Info2 = (PRINTER_INFO_2)Marshal.PtrToStructure(pAddr, typeof(PRINTER_INFO_2));                       intRet = System.Convert.ToInt32(Info2.Status);                 }                 Marshal.FreeHGlobal(pAddr);             }             ClosePrinter(hPrinter);         }           return intRet;     }       [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]     internal struct structPrinterDefaults     {         [MarshalAs(UnmanagedType.LPTStr)]         public String pDatatype;         public IntPtr pDevMode;         [MarshalAs(UnmanagedType.I4)]         public int DesiredAccess;     };       [FlagsAttribute]     internal enum PrinterStatus     {         PRINTER_STATUS_BUSY = 0x00000200,         PRINTER_STATUS_DOOR_OPEN = 0x00400000,         PRINTER_STATUS_ERROR = 0x00000002,         PRINTER_STATUS_INITIALIZING = 0x00008000,         PRINTER_STATUS_IO_ACTIVE = 0x00000100,         PRINTER_STATUS_MANUAL_FEED = 0x00000020,         PRINTER_STATUS_NO_TONER = 0x00040000,         PRINTER_STATUS_NOT_AVAILABLE = 0x00001000,         PRINTER_STATUS_OFFLINE = 0x00000080,         PRINTER_STATUS_OUT_OF_MEMORY = 0x00200000,         PRINTER_STATUS_OUTPUT_BIN_FULL = 0x00000800,         PRINTER_STATUS_PAGE_PUNT = 0x00080000,         PRINTER_STATUS_PAPER_JAM = 0x00000008,         PRINTER_STATUS_PAPER_OUT = 0x00000010,         PRINTER_STATUS_PAPER_PROBLEM = 0x00000040,         PRINTER_STATUS_PAUSED = 0x00000001,         PRINTER_STATUS_PENDING_DELETION = 0x00000004,         PRINTER_STATUS_PRINTING = 0x00000400,         PRINTER_STATUS_PROCESSING = 0x00004000,         PRINTER_STATUS_TONER_LOW = 0x00020000,         PRINTER_STATUS_USER_INTERVENTION = 0x00100000,         PRINTER_STATUS_WAITING = 0x20000000,         PRINTER_STATUS_WARMING_UP = 0x00010000     }       [StructLayout(LayoutKind.Sequential)]     internal struct PRINTER_INFO_2     {         public string pServerName;         public string pPrinterName;         public string pShareName;         public string pPortName;         public string pDriverName;         public string pComment;         public string pLocation;         public IntPtr pDevMode;         public string pSepFile;         public string pPrintProcessor;         public string pDatatype;         public string pParameters;         public IntPtr pSecurityDescriptor;         public uint Attributes;         public uint Priority;         public uint DefaultPriority;         public uint StartTime;         public uint UntilTime;         public uint Status;         public uint cJobs;         public uint AveragePPM;     }   }

　　

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1	string statu=   Printer.GetPrinterStatus("打印机名称");