如何获取打印机状态（缺纸，缺墨。。。）

用API罗不过每种打印机的驱动都不一样，如果有通用接口好办，否则就麻烦了

可以实现
调用打印机api

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;
  }  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;
  }; 状态枚举
[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
  }

enum PrinterStatus
{
其他状态= 1,
未知,
空闲,
正在打印,
预热,
停止打印,
打印中,
离线
}其中的"正在打印"和"打印中"是同一个意思,至于为什么会是这样,目前还不知道.在程序中添加System.Management的引用:using System.Management;然后编写获取打印机状态的函数如下:/// <summary>
  /// 获取打印机的当前状态
  /// </summary>
  /// <param name="PrinterDevice">打印机设备名称</param>
  /// <returns>打印机状态</returns>
  private PrinterStatus GetPrinterStat(string PrinterDevice)
  {
   PrinterStatus ret=0;
   string path=@"win32_printer.DeviceId='"+PrinterDevice+"'";
   ManagementObject printer=new ManagementObject(path);
   printer.Get();
   ret=(PrinterStatus)Convert.ToInt32(printer.Properties["PrinterStatus"].Value);
   return ret;
  }调用示例:MessageBox.Show(GetPrinterStat("\\\\192.168.0.88\\Samsung SCX-4x16 Series").ToString());

using   System.Management;

      private   ManagementObjectSearcher   query;
      private   ManagementObjectCollection   queryCollection;
      string   _classname="SELECT   *   FROM   Win32_Printer";

    query=new   ManagementObjectSearcher(_classname);
    queryCollection   =   query.Get();

    foreach   (ManagementObject   mo   in   queryCollection)
    {
          if   (string.Compare(mo["Name"].ToString(),PrinterName,true)==0)
          {
                  mo.InvokeMethod("SetDefaultPrinter",null);       //调用了其方法，可修改此处获取相关状态属性
                  break;
          }
    }
  相同的方法，你在得到具体的打印机实例时，可以获取到其相关属性，再显示出来即可。

以前VB6时用过~~ 但现在要C#的又不管用了，得重写！呵呵~ 用系统API了！~

添加引用 System.Printing
bool x=System.Printing.LocalPrintServer.GetDefaultPrintQueue().IsTonerLow; // 是否缺墨
不知道能不能用，还有很多的状态Is判断

简单而且强大！请注意必须添加引用 System.Printing

调试易

如何获取打印机状态（缺纸，缺墨。。。）

解决方案 »