WMI 类参考答案

【问题标题】：WMI classes referenceWMI 类参考
【发布时间】：2013-12-09 03:57:38
【问题描述】：

我有以下问题：我想使用 WMI 类获取登录用户。所以我尝试了这个：

    try
    {
        ManagementObjectSearcher searcher = new ManagementObjectSearcher("root\\CIMV2", "SELECT * FROMWin32_LoggedOnUser");
        foreach (ManagementObject queryObj in searcher.Get())
        {
            accounttype += queryObj["Antecedent"];
        }
    }
    catch
    {
        accounttype = "error";
    }

但这不起作用，因为 queryObj 返回对Win32_Account 的引用！我不知道如何读取这个Win32_Account 参考的值！

顺便说一句，我知道还有其他方式（比如Environment.UserName，但我想大致了解这些崇敬！

谢谢！

【问题讨论】：

标签： c# wmi

【解决方案1】：

Win32_LoggedOnUser WMI 类的Antecedent 和Dependent 属性返回一个WMI Object Path，这是一个WMI 类实例的唯一ID，您可以访问该类的数据，创建一个实例到ManagementObject 对象，然后设置从ManagementPath 对象获取的属性Path。

试试这个示例

using System;
using System.Collections.Generic;
using System.Management;
using System.Text;

namespace GetWMI_Info
{
    class Program
    {

        static void Main(string[] args)
        {
            try
            {
                ManagementScope Scope;
                Scope = new ManagementScope(String.Format("\\\\{0}\\root\\CIMV2", "localhost"), null);

                Scope.Connect();
                ObjectQuery Query = new ObjectQuery("SELECT * FROM Win32_LoggedOnUser");
                ManagementObjectSearcher Searcher = new ManagementObjectSearcher(Scope, Query);

                foreach (ManagementObject WmiObject in Searcher.Get())
                {
                    //Console.WriteLine("{0,-35} {1,-40}","Antecedent",WmiObject["Antecedent"]);// Reference
                    //Console.WriteLine("{0,-35} {1,-40}","Dependent",WmiObject["Dependent"]);// Reference
                    ManagementObject oAntecedent = new ManagementObject();
                    ManagementPath ObjectPath = new ManagementPath((String)WmiObject["Antecedent"]);//Win32_Account 
                    oAntecedent.Path = ObjectPath;
                    oAntecedent.Get();

                    Console.WriteLine("{0,-35} {1,-40}", "Caption", oAntecedent["Caption"]);// String
                    Console.WriteLine("{0,-35} {1,-40}", "Description", oAntecedent["Description"]);// String
                    Console.WriteLine("{0,-35} {1,-40}", "Domain", oAntecedent["Domain"]);// String
                    //Console.WriteLine("{0,-35} {1,-40}", "InstallDate", ManagementDateTimeConverter.ToDateTime((string)WmiObject["InstallDate"]));// Datetime
                    Console.WriteLine("{0,-35} {1,-40}", "LocalAccount", oAntecedent["LocalAccount"]);// Boolean
                    Console.WriteLine("{0,-35} {1,-40}", "Name", oAntecedent["Name"]);// String
                    Console.WriteLine("{0,-35} {1,-40}", "SID", oAntecedent["SID"]);// String
                    Console.WriteLine("{0,-35} {1,-40}", "SIDType", oAntecedent["SIDType"]);// Uint8
                    Console.WriteLine("{0,-35} {1,-40}", "Status", oAntecedent["Status"]);// String
                    Console.WriteLine();    
                }
            }
            catch (Exception e)
            {
                Console.WriteLine(String.Format("Exception {0} Trace {1}",e.Message,e.StackTrace));
            }
            Console.WriteLine("Press Enter to exit");
            Console.Read();
        }
    }
}

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