如何用c#實(shí)現(xiàn)打印機(jī)脫機(jī)檢查及阻塞打印

這篇文章主要介紹“如何用c#實(shí)現(xiàn)打印機(jī)脫機(jī)檢查及阻塞打印”，在日常操作中，相信很多人在如何用c#實(shí)現(xiàn)打印機(jī)脫機(jī)檢查及阻塞打印問(wèn)題上存在疑惑，小編查閱了各式資料，整理出簡(jiǎn)單好用的操作方法，希望對(duì)大家解答”如何用c#實(shí)現(xiàn)打印機(jī)脫機(jī)檢查及阻塞打印”的疑惑有所幫助！接下來(lái)，請(qǐng)跟著小編一起來(lái)學(xué)習(xí)吧！

打印機(jī)狀態(tài)獲取

enum PrinterStatus
        {
            其他 = 1,
            未知 = 2,
            空閑 = 3,
            打印 = 4,
            預(yù)熱 = 5,
            停止打印 = 6,
            脫機(jī) = 7,
        }/// <summary>/// 獲取打印機(jī)的當(dāng)前狀態(tài)/// </summary>/// <param name="PrinterDevice">打印機(jī)設(shè)備名稱</param>/// <returns>打印機(jī)狀態(tài)</returns>private static PrinterStatus GetPrinterPrinterStatus(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;
        }

打印機(jī)脫機(jī)檢查

public static bool CheckPrinter(string BindPrintName)
        {
            ManagementScope scope = new ManagementScope(@"\root\cimv2");
            scope.Connect();// Select Printers from WMI Object CollectionsManagementObjectSearcher searcher = new ManagementObjectSearcher("SELECT * FROM Win32_Printer");string printerName = "";foreach (ManagementObject printer in searcher.Get())
            {
                printerName = printer["Name"].ToString().ToLower();if (printerName.IndexOf(BindPrintName.ToLower()) > -1)
                {//foreach (var property in printer.Properties)//{//    LogUtil.WriteLog(property.Name + ":" + property.Value);//}if (printer["WorkOffline"].ToString().ToLower().Equals("true"))
                    {return false;
                    }else{return true;
                    }
                }
            }return false;
        }

打印機(jī)阻塞隊(duì)列實(shí)現(xiàn)

這里主要是通過(guò)一個(gè)while循環(huán)來(lái)不停的獲取打印機(jī)的狀態(tài)，空閑時(shí)才會(huì)進(jìn)行下一次打印，通過(guò)兩個(gè)標(biāo)志位來(lái)配合輪詢的外部介入退出

FinishWait標(biāo)志位是任務(wù)內(nèi)部的標(biāo)識(shí)，如果打印機(jī)檢查到了錯(cuò)誤狀態(tài)則進(jìn)行輪詢退出

GlobalInfo.IsGlobalExist標(biāo)志位是程序全局標(biāo)識(shí)，如果界面上通知用戶等待時(shí)間過(guò)長(zhǎng)，可以進(jìn)行人工手動(dòng)干預(yù)退出

//檢查打印機(jī)狀態(tài)if (!CheckPrinter(PrintName))
                    {throw new PrintCheckException("打印機(jī)處于脫機(jī)狀態(tài)");
                    }
                    PrinterStatus State = GetPrinterPrinterStatus(PrintName);if (State == PrinterStatus.空閑)
                    {

                    }else if (State == PrinterStatus.打印 || State == PrinterStatus.預(yù)熱)
                    {//正在打印/預(yù)熱時(shí)循環(huán)去查詢打印機(jī)狀態(tài)，如果變成了就緒就開(kāi)始打印while (State != PrinterStatus.空閑 && !FinishWait && !GlobalInfo.IsGlobalExist)
                        {
                            State = GetPrinterPrinterStatus(PrintName);if (!CheckPrinter(PrintName))
                            {
                                FinishWait = true;throw new PrintCheckException("打印機(jī)處于脫機(jī)狀態(tài)");
                            }if (State == PrinterStatus.打印 || State == PrinterStatus.預(yù)熱 || State == PrinterStatus.空閑)
                            {if (State == PrinterStatus.空閑)
                                {

                                    FinishWait = true;
                                }
                            }else{
                                FinishWait = true;throw new PrintCheckException("打印機(jī)狀態(tài)錯(cuò)誤，當(dāng)前狀態(tài)：" + State.ToString());
                            }
                        }

到此，關(guān)于“如何用c#實(shí)現(xiàn)打印機(jī)脫機(jī)檢查及阻塞打印”的學(xué)習(xí)就結(jié)束了，希望能夠解決大家的疑惑。理論與實(shí)踐的搭配能更好的幫助大家學(xué)習(xí)，快去試試吧！若想繼續(xù)學(xué)習(xí)更多相關(guān)知識(shí)，請(qǐng)繼續(xù)關(guān)注億速云網(wǎng)站，小編會(huì)繼續(xù)努力為大家?guī)?lái)更多實(shí)用的文章！