C# 通过SNMP 协议监控网络打印机状态

c# 通过SNMP协议监控网络打印机状态，缺纸，缺墨，纸盒拉出，是打印机实时状态，不是控制面板驱动的状态。

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2020-04-07 12:11  PrintState\
     目录           0  2020-04-07 12:11  PrintState\bin\
     目录           0  2020-04-07 12:11  PrintState\bin\Debug\
     文件       11600  2020-04-26 21:20  PrintState\bin\Debug\PrintState.vshost.exe
     文件         490  2019-03-19 12:46  PrintState\bin\Debug\PrintState.vshost.exe.manifest
     文件        8422  2019-06-17 13:57  PrintState\CopyManager.cs
     文件        1182  2019-06-17 13:57  PrintState\CountChargeBLL.cs
     文件       23329  2019-06-17 13:57  PrintState\DeviceInfo.cs
     文件       50409  2020-02-11 18:15  PrintState\DeviceManager.cs
     文件       24326  2020-05-09 12:15  PrintState\Form1.cs
     文件        6201  2020-05-09 12:15  PrintState\Form1.Designer.cs
     文件        5817  2020-05-09 12:15  PrintState\Form1.resx
     文件       20691  2019-06-17 13:57  PrintState\Form2.cs
     文件        2671  2019-06-17 13:57  PrintState\Form2.Designer.cs
     文件        5817  2019-06-17 13:57  PrintState\Form2.resx
     文件        8740  2019-06-17 13:57  PrintState\MonitorCounter.cs
     目录           0  2020-04-07 12:11  PrintState\obj\
     目录           0  2020-04-07 12:11  PrintState\obj\x86\
     目录           0  2020-04-07 12:11  PrintState\obj\x86\Debug\
     文件        2867  2019-07-30 13:57  PrintState\obj\x86\Debug\DesignTimeResolveAssemblyReferences.cache
     文件        6549  2020-05-09 12:14  PrintState\obj\x86\Debug\DesignTimeResolveAssemblyReferencesInput.cache
     文件        1250  2020-04-26 21:20  PrintState\obj\x86\Debug\PrintState.csproj.FileListAbsolute.txt
     文件        1033  2019-06-20 20:57  PrintState\obj\x86\Debug\PrintState.csproj.GenerateResource.Cache
     文件        9922  2019-06-20 20:57  PrintState\obj\x86\Debug\PrintState.csprojResolveAssemblyReference.cache
     文件         180  2019-06-20 20:57  PrintState\obj\x86\Debug\PrintState.Form1.resources
     文件         180  2019-06-20 20:57  PrintState\obj\x86\Debug\PrintState.Form2.resources
     文件         180  2019-06-20 20:57  PrintState\obj\x86\Debug\PrintState.Properties.Resources.resources
     目录           0  2019-06-18 17:30  PrintState\obj\x86\Debug\TempPE\
     文件        1141  2019-06-17 13:57  PrintState\PrinterCounter.cs
     文件        4532  2019-06-17 13:57  PrintState\PrintState.csproj
     文件         491  2020-04-26 21:20  PrintState\Program.cs
............此处省略8个文件信息