如何检查打印机是否安装并准备好使用C#？

概述如何以编程方式检查打印机是否已安装(如果有的话,如何检查是否已经准备就绪)？在C#中使用.NET 3.5和Visual Studio 2008？ 提前致谢, 此代码段将检索有关已安装打印机的信息： using System.Drawing.Printing;//... foreach (string printerName in PrinterSettings.InstalledPrint 如何以编程方式检查打印机是否已安装(如果有的话,如何检查是否已经准备就绪)？在C#中使用.NET 3.5和Visual Studio 2008？

提前致谢,

解决方法 此代码段将检索有关已安装打印机的信息：

using System.Drawing.Printing;//...  foreach (string printername in PrinterSettings.InstalledPrinters)  {    // display the printer name.    Console.Writeline("Printer: {0}",printername);    // RetrIEve the printer settings.    PrinterSettings printer = new PrinterSettings();    printer.Printername = printername;    // Check that this is a valID printer.    // (This step might be required if you read the printer name    // from a user-supplIEd value or a registry or configuration file    // setting.)    if (printer.IsValID)    {      // display the List of valID resolutions.      Console.Writeline("Supported Resolutions:");      foreach (PrinterResolution resolution in        printer.PrinterResolutions)      {        Console.Writeline("  {0}",resolution);      }      Console.Writeline();      // display the List of valID paper sizes.      Console.Writeline("Supported Paper Sizes:");      foreach (PaperSize size in printer.PaperSizes)      {        if (Enum.Isdefined(size.Kind.GetType(),size.Kind))        {          Console.Writeline("  {0}",size);        }      }      Console.Writeline();    }  }

另一个选项是使用WMI.右键单击项目>添加参考>选择.NET选项卡>系统管理

using System.Management;// ...   private List<string> GetPrinters()   {             List<string> printernames = new List<string>();        // Use the Objectquery to get the List of configured printers        System.Management.Objectquery oquery =             new System.Management.Objectquery("SELECT * FROM Win32_Printer");        System.Management.ManagementObjectSearcher mosearcher =             new System.Management.ManagementObjectSearcher(oquery);        System.Management.ManagementObjectCollection moc = mosearcher.Get();        foreach (ManagementObject mo in moc)        {            System.Management.PropertyDataCollection pdc = mo.PropertIEs;            foreach (System.Management.PropertyData pd in pdc)            {                if ((bool)mo["Network"])                {                    printernames.Add(mo[pd.name]);                }            }        }        return printernames;    }

这是另一个显示更多属性的片段：

static voID PrintProps(ManagementObject o,string prop)    {        try { Console.Writeline(prop + "|" + o[prop]); }        catch (Exception e) { Console.Write(e.ToString()); }    }    static voID Main(string[] args)    {        ManagementObjectSearcher searcher = new ManagementObjectSearcher("SELECT * FROM Win32_Printer");        foreach (ManagementObject printer in searcher.Get())        {            string printername = printer["name"].ToString().Tolower();            Console.Writeline("Printer :" + printername);            PrintProps(printer,"Caption");            PrintProps(printer,"ExtendedPrinterStatus");            PrintProps(printer,"Availability");            PrintProps(printer,"Default");            PrintProps(printer,"DetectedErrorState");            PrintProps(printer,"ExtendedDetectedErrorState");            PrintProps(printer,"LastErrorCode");            PrintProps(printer,"PrinterState");            PrintProps(printer,"PrinterStatus");            PrintProps(printer,"Status");            PrintProps(printer,"WorkOffline");            PrintProps(printer,"Local");        }    }

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