使用Microsoft WMI Code Creator 应用程序调用WMI获取系统信息

﹏ヽ暗。殇╰゛Y 2023-10-01 20:18 14阅读 0赞

**介绍**

本文将描述一种使用 Windows Management Instrumentation (WMI) 调用来获取系统信息的方法。 正如您将看到的，从基于 WMI 的调用中获取信息是微不足道的；似乎最困难的部分是找出 WMI 中可用的内容。 幸运的是，Microsoft 提供了一些工具，这些工具也使 WMI 发现变得非常简单。

![100527e52839edb2825f230b67e36820.png][]

图 1： 使用 WMI 调用获取系统信息。

**微软 WMI 代码创建者**

Microsoft WMI Code Creator 应用程序可从 Microsoft 免费获得；它可以从这个 URL 下载：

[Download WMI Code Creator v1.0 from Official Microsoft Download Center][]

根据 Microsoft 的说法，“WMI Code Creator 工具允许您生成 VBScript、C\# 和 VB .NET 代码，这些代码使用 WMI 来完成管理任务，例如查询管理数据、执行 WMI 类中的方法或使用WMI。”

![watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBAYWxsd2F5Mg_size_20_color_FFFFFF_t_70_g_se_x_16][]  
  
![watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBAYWxsd2F5Mg_size_20_color_FFFFFF_t_70_g_se_x_16 1][]

图 2： WMI Code Creator 界面（生成代码）。

**入门**

该解决方案包含一个项目。 该项目被称为“ *UsingWMI* ”。 提供该项目是为了演示对 WMI 的查询和获取信息。 由于您可以通过此界面访问数百位信息，因此该演示仅展示了如何检索 19 种不同的东西。 用于通过 WMI 访问信息的前两种方法中所示的方法可以更改并用于访问 WMI 中的任何信息。 该项目仅包含一个表单，该表单包含执行所述任务所需的所有代码。

![29297663e1a98d300b919367f61347cb.png][]

图 3： 带有 Project Visible 的解决方案资源管理器。

**代码： 使用 WMI**

该项目用于针对通过 WMI 接口公开的信息测试不同的调用。 该项目包含一个 Windows 窗体。 该表单包含一个文本框，用于显示通过一系列方法调用收集的信息。

此表单的代码开头如下：

using System;
    
    using System.Collections;
    
    using System.ComponentModel;
    
    using System.Data;
    
    using System.Drawing;
    
    using System.Text;
    
    using System.Windows.Forms;
    
    using System.Management; 
    
     
    
    namespace UsingWMI
    
    {
    
        public partial class Form1 : Form
    
        {
    
            public Form1()
    
            {

该类从默认导入开始；我将 System.Collections 和 System.Management 添加到默认值并删除了泛型。 在命名空间和类声明之后，表单加载事件会执行类中定义的所有方法，并将结果加载到文本框中进行显示：

public Form1()
    
    {
    
        InitializeComponent();
    
     
    
        // Get System Information using WMI Calls
    
        this.textBox1.Text += GetAccount() + Environment.NewLine;
    
        this.textBox1.Text += Environment.NewLine;
    
        this.textBox1.Text += GetHardDisks();
    
        this.textBox1.Text += GetBoardMaker() + Environment.NewLine;
    
        this.textBox1.Text += GetBoardSerNo() + Environment.NewLine;
    
        this.textBox1.Text += GetBoardProductId() + Environment.NewLine;
    
        this.textBox1.Text += Environment.NewLine;
    
        this.textBox1.Text += GetCacheBlockSize() + Environment.NewLine;
    
        this.textBox1.Text += GetCacheType() + Environment.NewLine;
    
        this.textBox1.Text += GetCacheMaxSize() + Environment.NewLine;
    
        this.textBox1.Text += Environment.NewLine;
    
        this.textBox1.Text += GetCdRomDrive() + Environment.NewLine;
    
        this.textBox1.Text += Environment.NewLine;
    
        this.textBox1.Text += GetBIOSmaker() + Environment.NewLine;
    
        this.textBox1.Text += GetBIOScaption() + Environment.NewLine;
    
        this.textBox1.Text += GetBIOSserNo() + Environment.NewLine;
    
        this.textBox1.Text += Environment.NewLine;
    
        this.textBox1.Text += GetWinIconSpace() + Environment.NewLine;
    
        this.textBox1.Text += GetWinCursorBlinkRate() +
    
        Environment.NewLine;
    
        this.textBox1.Text += GetWinScreenSaverActive() +
    
        Environment.NewLine;
    
        this.textBox1.Text += GetWinCoolSwitch() + Environment.NewLine; 
    
        this.textBox1.SelectionStart = textBox1.Text.Length;
    
    }

应用程序中的其余代码用于定义表单加载期间调用的方法；在以下方法中，有获取硬盘序列号、BIOS信息、Windows桌面信息、用户信息等的例子：

public string GetHardDisks()
    
    {
    
        ManagementObjectSearcher searcher = new
    
        ManagementObjectSearcher("root\\CIMV2", "SELECT * FROM Win32_LogicalDisk"); 
    
        StringBuilder sb = new StringBuilder(); 
    
        foreach (ManagementObject wmi in searcher.Get())
    
        {
    
            try
    
            {
    
                sb.Append("Drive Device ID: " +
    
                wmi.GetPropertyValue("DeviceID").ToString() +Environment.NewLine);
    
                sb.Append("Caption: " + wmi.GetPropertyValue("Caption").ToString() + Environment.NewLine);
    
                sb.Append("Volume Serial Number: " + wmi.GetPropertyValue("VolumeSerialNumber").ToString()
    
                + Environment.NewLine);
    
                sb.Append("Free Space: " + wmi.GetPropertyValue("FreeSpace").ToString() + "
    
                bytes free" + Environment.NewLine + Environment.NewLine);
    
            }
    
            catch
    
            {
    
                return sb.ToString();
    
            }
    
        }
    
        return sb.ToString();
    
    } 
    
     
    
    public string GetBoardMaker()
    
    {
    
        ManagementObjectSearcher searcher = new ManagementObjectSearcher("root\\CIMV2", "SELECT * FROM
    
        Win32_BaseBoard"); 
    
        foreach (ManagementObject wmi in searcher.Get())
    
        {
    
            try
    
            {
    
                return Environment.NewLine + "Board Maker: " + wmi.GetPropertyValue("Manufacturer").ToString();
    
            }
    
            catch {   }
    
        }
    
        return "Board Maker: Unknown";
    
    } 
    
     
    
    public string GetBoardSerNo()
    
    {
    
        ManagementObjectSearcher searcher = new ManagementObjectSearcher("root\\CIMV2", "SELECT * FROM
    
        Win32_BaseBoard"); 
    
        foreach (ManagementObject wmi in searcher.Get())
    
        {
    
            try
    
            {
    
                return "Serial Number: " + wmi.GetPropertyValue("SerialNumber").ToString();
    
            }
    
            catch { }
    
        }
    
        return "Serial Number: Unknown";
    
    } 
    
     
    
    public string GetBoardProductId()
    
    {
    
        ManagementObjectSearcher searcher = new ManagementObjectSearcher("root\\CIMV2", "SELECT * FROM
    
        Win32_BaseBoard"); 
    
        foreach (ManagementObject wmi in searcher.Get())
    
        {
    
            try
    
            {
    
                return "Product: " + wmi.GetPropertyValue("Product").ToString();
    
            }
    
            catch { }
    
        }
    
        return "Product: Unknown";
    
    } 
    
     
    
    public string GetCacheBlockSize()
    
    {
    
        ManagementObjectSearcher searcher = new ManagementObjectSearcher("root\\CIMV2", "SELECT * FROM
    
        Win32_CacheMemory"); 
    
        foreach (ManagementObject wmi in searcher.Get())
    
        {
    
            try
    
            {
    
                return "Cache Block Size: " + wmi.GetPropertyValue("BlockSize").ToString();
    
            }
    
            catch { }
    
        }
    
        return "Cache Block Size: Unknown";
    
    } 
    
     
    
    public string GetCacheType()
    
    {
    
        ManagementObjectSearcher searcher = new ManagementObjectSearcher("root\\CIMV2", "SELECT * FROM
    
        Win32_CacheMemory"); 
    
        foreach (ManagementObject wmi in searcher.Get())
    
        {
    
            try
    
            {
    
                return "Cache Type: " + wmi.GetPropertyValue("CacheType").ToString();
    
            }
    
            catch { }
    
        }
    
        return "Cache Type: Unknown";
    
    } 
    
     
    
    public string GetCacheMaxSize()
    
    {
    
        ManagementObjectSearcher searcher = new ManagementObjectSearcher("root\\CIMV2", "SELECT * FROM
    
        Win32_CacheMemory"); 
    
        foreach (ManagementObject wmi in searcher.Get())
    
        {
    
            try
    
            {
    
                return "Max Cache Size: " + wmi.GetPropertyValue("MaxCacheSize").ToString();
    
            }
    
            catch { }
    
        }
    
        return "Max Cache Size: Unknown";
    
    } 
    
     
    
    public string GetCdRomDrive()
    
    {
    
        ManagementObjectSearcher searcher = new ManagementObjectSearcher("root\\CIMV2", "SELECT * FROM
    
        Win32_CDROMDrive"); 
    
        foreach (ManagementObject wmi in searcher.Get())
    
        {
    
            try
    
            {
    
                return "CD ROM Drive Letter: " + wmi.GetPropertyValue("Drive").ToString();
    
            }
    
            catch { }
    
        }
    
        return "CD ROM Drive Letter: Unknown";
    
    } 
    
     
    
    public string GetAccount()
    
    {
    
        ManagementObjectSearcher searcher = new ManagementObjectSearcher("root\\CIMV2", "SELECT * FROM
    
        Win32_UserAccount"); 
    
        foreach (ManagementObject wmi in searcher.Get())
    
        {
    
            try
    
            {
    
                return "User Account Name: " + wmi.GetPropertyValue("Name").ToString();
    
            }
    
            catch { }
    
        }
    
        return "User Account Name: Unknown";
    
    } 
    
     
    
    public string GetBIOScaption()
    
    {
    
        ManagementObjectSearcher searcher = new ManagementObjectSearcher("root\\CIMV2", "SELECT * FROM
    
        Win32_BIOS"); 
    
        foreach (ManagementObject wmi in searcher.Get())
    
        {
    
            try
    
            {
    
                return "BIOS Caption: " + wmi.GetPropertyValue("Caption").ToString();
    
            }
    
            catch { }
    
        }
    
        return "BIOS Caption: Unknown";
    
    }
    
     
    
    public string GetBIOSmaker()
    
    {
    
        ManagementObjectSearcher searcher = new ManagementObjectSearcher("root\\CIMV2", "SELECT * FROM
    
        Win32_BIOS"); 
    
        foreach (ManagementObject wmi in searcher.Get())
    
        {
    
            try
    
            {
    
                return "BIOS Maker: " + wmi.GetPropertyValue("Manufacturer").ToString();
    
            }
    
            catch { }
    
        }
    
        return "BIOS Maker: Unknown";
    
    }
    
     
    
    public string GetBIOSserNo()
    
    {
    
        ManagementObjectSearcher searcher = new ManagementObjectSearcher("root\\CIMV2", "SELECT * FROM
    
        Win32_BIOS"); 
    
        foreach (ManagementObject wmi in searcher.Get())
    
        {
    
            try
    
            {
    
                return "BIOS Serial Number: " + wmi.GetPropertyValue("SerialNumber").ToString();
    
            }
    
            catch { }
    
        }
    
        return "BIOS Serial Number: Unknown";
    
    } 
    
     
    
    public string GetWinIconSpace()
    
    {
    
        ManagementObjectSearcher searcher = new ManagementObjectSearcher("root\\CIMV2", "SELECT * FROM
    
        Win32_Desktop"); 
    
        foreach (ManagementObject wmi in searcher.Get())
    
        {
    
            try
    
            {
    
                return "Desktop Icon Spacing: " + wmi.GetPropertyValue("IconSpacing").ToString();
    
            }
    
            catch { }
    
        }
    
        return "Desktop Icon Spacing: Unknown";
    
    } 
    
     
    
    public string GetWinCursorBlinkRate()
    
    {
    
        ManagementObjectSearcher searcher = new ManagementObjectSearcher("root\\CIMV2", "SELECT * FROM
    
        Win32_Desktop"); 
    
        foreach (ManagementObject wmi in searcher.Get())
    
        {
    
            try
    
            {
    
                return "Cursor Blink Rate: " + wmi.GetPropertyValue("CursorBlinkRate").ToString();
    
            }
    
            catch { }
    
        }
    
        return "Cursor Blink Rate: Unknown";
    
    } 
    
     
    
    public string GetWinScreenSaverActive()
    
    {
    
        ManagementObjectSearcher searcher = new ManagementObjectSearcher("root\\CIMV2", "SELECT * FROM
    
        Win32_Desktop"); 
    
        foreach (ManagementObject wmi in searcher.Get())
    
        {
    
            try
    
            {
    
                return "Screen Saver Active: " + wmi.GetPropertyValue("ScreenSaverActive").ToString();
    
            }
    
            catch { }
    
        }
    
        return "Screen Saver Active: Unknown";
    
    }
    
     
    
    public string GetWinCoolSwitch()
    
    {
    
        ManagementObjectSearcher searcher = new ManagementObjectSearcher("root\\CIMV2", "SELECT * FROM
    
        Win32_Desktop"); 
    
        foreach (ManagementObject wmi in searcher.Get())
    
        {
    
            try
    
            {
    
                return "CoolSwitch: " + wmi.GetPropertyValue("CoolSwitch").ToString();
    
            }
    
            catch { }
    
        }
    
        return "CoolSwitch: Unknown";
    
    }

采用所示的任何一种方法，如果要将 select 语句中的表名换成不同的选项，然后换出属性值，则可以使用相同的代码从 WMI 收集任何信息。 请求返回的部分数据以数组形式恢复；在这些情况下，您需要遍历数组以捕获返回的各个值。 管理搜索器对象接受两个参数，一个称为管理范围（例如，“root\\\\CIMV2”），另一个称为对象查询，它被定义为一个简单的 SELECT 语句。

**概括。**

本文旨在演示一种从 WMI 获取信息的简单方法。 如果需要有关硬件的信息（例如硬盘驱动器或主板的序列号）或有关桌面的信息，这是一种简单的收集方法。 Microsoft Code Creator 工具的使用确实简化了检查选项和处理结果的过程。

[100527e52839edb2825f230b67e36820.png]: https://img-blog.csdnimg.cn/img_convert/100527e52839edb2825f230b67e36820.png
[Download WMI Code Creator v1.0 from Official Microsoft Download Center]: http://www.microsoft.com/downloads/details.aspx?FamilyID=2cc30a64-ea15-4661-8da4-55bbc145c30e&DisplayLang=en
[watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBAYWxsd2F5Mg_size_20_color_FFFFFF_t_70_g_se_x_16]: https://img-blog.csdnimg.cn/1087a02aa3d34f798ca37d2e0e384c91.png?x-oss-process=image/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBAYWxsd2F5Mg==,size_20,color_FFFFFF,t_70,g_se,x_16
[watermark_type_d3F5LXplbmhlaQ_shadow_50_text_Q1NETiBAYWxsd2F5Mg_size_20_color_FFFFFF_t_70_g_se_x_16 1]: https://img-blog.csdnimg.cn/97e303782a534fc5b93776ba041ed924.png?x-oss-process=image/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBAYWxsd2F5Mg==,size_20,color_FFFFFF,t_70,g_se,x_16
[29297663e1a98d300b919367f61347cb.png]: https://img-blog.csdnimg.cn/img_convert/29297663e1a98d300b919367f61347cb.png