如何在C#中将WMI用于打印服务器 [英] how to use wmi for print server in c#

问题描述

我正在使用一个称为打印监控工具的项目.使用此应用程序，我们可以在打印设备上获得控件，以便我们可以计算打印输出
并收集打印详细信息.我的问题是我不知道如何使用wmi连接局域网中的打印服务器.据我所知，打印机上没有很多Windows操作系统，更不用说运行Windows Management Instruments服务了……但是大多数情况下，它们都有SNMP服务，您可以通过UDP端口161查询.SNMP软件包很容易发送接收等，但MIB数据库是问题.您需要知道要查询的目标上的哪个对象.对于实例对象ID，"1.3.6.1.2.1.43"是MIB中的打印机节点.查看简单网络管理协议 [ ^ ]了解更多信息.

static void GetpriterDetails()
        {
            bool online = false;
            string strQuery = "SELECT * FROM Win32_Printer";

            ObjectQuery objectQuery = new ObjectQuery(strQuery);
            ManagementObjectSearcher query = new ManagementObjectSearcher(objectQuery);
            ManagementObjectCollection queryCollection = query.Get();

            foreach (ManagementObject managementObject in queryCollection)
            {
                if (managementObject != null)
                {
                    string str = string.Empty;
                    string printerName = "\\\\SEBP20\\WiproEX3";
                    str = managementObject["Name"].ToString().ToLower();
                    if (!str.Contains(''\\''))
                    {
                        string MyPCname = string.Empty;

                        if (printerName.Contains(''\\''))
                        {
                            string[] MyPCname1 = printerName.Split(''\\'');
                            MyPCname = MyPCname1[2];
                        }

                        str = "\\\\" + MyPCname + "\\" + str;

                    }

                    if (str.ToUpper().Equals(printerName.ToUpper()))
                    {
                        if (managementObject["WorkOffline"].ToString().ToLower().Equals("true") || managementObject["PrinterStatus"].Equals(7))
                        {
                            //--it''s offline
                            online = false;
                        }
                        else
                        {
                            //--it''s online
                            online = true;
                        }
                    }
                }
                else
                {
                    throw new Exception("No printers were found");
                }
            }
        }

您可能想要从此处开始 [ 解决方案

As far as I know, printers don''t have much of Windows OS on them, let alone run Windows Management Instruments service... But mostly they do have SNMP service which you can query via UDP port 161. The SNMP packages are easy to send-receive etc but MIB database is the problem. You need to know which object on target to query. For Instance object ID "1.3.6.1.2.1.43" is printer node in MIB. Check out Simple Network Management Protocol[^] for more info.

static void GetpriterDetails()
        {
            bool online = false;
            string strQuery = "SELECT * FROM Win32_Printer";

            ObjectQuery objectQuery = new ObjectQuery(strQuery);
            ManagementObjectSearcher query = new ManagementObjectSearcher(objectQuery);
            ManagementObjectCollection queryCollection = query.Get();

            foreach (ManagementObject managementObject in queryCollection)
            {
                if (managementObject != null)
                {
                    string str = string.Empty;
                    string printerName = "\\\\SEBP20\\WiproEX3";
                    str = managementObject["Name"].ToString().ToLower();
                    if (!str.Contains(''\\''))
                    {
                        string MyPCname = string.Empty;

                        if (printerName.Contains(''\\''))
                        {
                            string[] MyPCname1 = printerName.Split(''\\'');
                            MyPCname = MyPCname1[2];
                        }

                        str = "\\\\" + MyPCname + "\\" + str;

                    }

                    if (str.ToUpper().Equals(printerName.ToUpper()))
                    {
                        if (managementObject["WorkOffline"].ToString().ToLower().Equals("true") || managementObject["PrinterStatus"].Equals(7))
                        {
                            //--it''s offline
                            online = false;
                        }
                        else
                        {
                            //--it''s online
                            online = true;
                        }
                    }
                }
                else
                {
                    throw new Exception("No printers were found");
                }
            }
        }

You might want to start from here[^].

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