WMI printer.put()访问被拒绝

Question

我试图使用以下代码修改每台打印机的“保持打印作业”属性：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Management;

namespace ConsolePrintpref
{
class Program
{
    static void Main(string[] args)
    {
        Console.WriteLine("Modify printer parameters");

        ManagementScope scope = new ManagementScope("root\\CIMV2");
        scope.Connect();

        string searchQuery = "SELECT * FROM Win32_Printer";
        ManagementObjectSearcher searchPrinters = new ManagementObjectSearcher(searchQuery);
        ManagementObjectCollection printerCollection = searchPrinters.Get();

        foreach (ManagementObject printer in printerCollection)
        {
            PropertyDataCollection printerProperties = printer.Properties;
            foreach (PropertyData property in printerProperties)
            {
                if (property.Name == "KeepPrintedJobs")
                {
                    printerProperties[property.Name].Value = true;
                }
            }
            printer.Put(); //access denied
        }
     }
   }
}

但它引发错误:System.Management.ManagementException类型的未处理异常发生在System.Management.dll附加信息中:访问被拒绝

我在管理员帐户上，在WMImgmt中，它显示管理员有写权限。有什么东西我遗漏了吗？

Answer 1

尝试以管理员身份运行Visual。