LogicalDisk 与 DiskPartition 的 WMI 关联

Question

我正在尝试整理一个列表，其中显示我的计算机系统中的所有 LogicalDisk 实例以及它们关联的驱动器盘符。编码在 C# 中。

WMI classes Win32_LogicalDiskToPartition、Win32_DiskPartition 和 Win32_LogicalDisk 似乎是完成该工作的正确数据源：

Win32_LogicalDiskToPartition 包含属性 "Antecedent" 显然链接到"DeviceId" 属性 of class Win32_DiskPartition
和 Win32_LogicalDiskToPartition 包含属性 "Dependent" 显然链接到一个“DeviceId”属性 of class Win32_LogicalDisk

这是我的问题：

Antecedent属性Win32_LogicalDiskToPartitionreturns一个字符串值如：

\\HOME-PC\root\cimv2:Win32_DiskPartition.DeviceID=\"Disk #2, Partition #0\

但我只需要 Disk #2, Partition #0 将其与 DeviceId 属性值 class Win32_DiskPartition.

依赖属性值的类似问题。

有没有办法获得这个子字符串（硬编码字符串解析除外）？

恐怕查询没有帮助，因为我还需要有关逻辑磁盘和关联磁盘分区的其他信息。我知道我必须覆盖具有多个驱动器号的扩展分区 - 这可以通过 StartingAddress 属性的 Win32_LogicalDiskToPartition实例.

Answer 1

这种类型的枚举通常使用System.Management ManagementObjectSearcher
来执行这是一个顺序路径，您可以按照该路径检索系统中驱动器的信息：

Enumerate the Disk Drives => For Each [DeviceID] =>
Enumerate Disk Drive To Partition => For Each [DeviceID]
Enumerate Logical Disk To Partition

每个 class 中的对象都有其关联的属性：

Disk Drives (MSDN)
Partition (MSDN)
Logical Disk (MSDN)

using System.Management;

 //Define an initial scope for the following queries
 var scope = new ManagementScope(@"\" + Environment.MachineName + @"\root\CIMV2");

 //Select all Disk Drives
 var query = new SelectQuery("SELECT * FROM Win32_DiskDrive");
 //Options => Timeout infinite to avoid timeouts and forward only for speed
 var options = new EnumerationOptions();
 options.Timeout = EnumerationOptions.InfiniteTimeout;
 options.Rewindable = false;
 options.ReturnImmediately = true;

 //New root Management Object
 var searcher = new ManagementObjectSearcher(scope, query, options);

 //Enumerate all Disk Drives
 foreach (ManagementObject moDisk in searcher.Get())
 {
    //Query the associated partitions of the current DeviceID
    string assocQuery = "Associators of {Win32_DiskDrive.DeviceID='" + 
                                         mobDisk.Properties["DeviceID"].Value.ToString() + "'}" +
                                         "where AssocClass=Win32_DiskDriveToDiskPartition";
    var assocPart = new ManagementObjectSearcher(assocQuery);
    assocPart.Options.Timeout = EnumerationOptions.InfiniteTimeout;

    //For each Disk Drive, query the associated partitions
    foreach (ManagementObject moPart in assocPart.Get())
    {
       Console.WriteLine("DeviceID: {0}  BootPartition: {1}", 
                         moPart.Properties["DeviceID"].Value.ToString(), 
                         moPart.Properties["BootPartition"].Value.ToString());

       //Query the associated logical disk of the current PartitionID
       string logDiskQuery = "Associators of {Win32_DiskPartition.DeviceID='" + 
                              moPart.Properties["DeviceID"].Value.ToString() + "'} " +
                              "where AssocClass=Win32_LogicalDiskToPartition";

       var logDisk = new ManagementObjectSearcher(logDiskQuery);
       logDisk.Options.Timeout = EnumerationOptions.InfiniteTimeout;

       //For each partition, query the Logical Drives
       foreach (var logDiskEnu in logDisk.Get())
       {
          Console.WriteLine("Volume Name: {0}  Serial Number: {1}  System Name: {2}",
                            logDiskEnu.Properties["VolumeName"].Value.ToString(),
                            logDiskEnu.Properties["VolumeSerialNumber"].Value.ToString(),
                            logDiskEnu.Properties["SystemName"].Value.ToString());
          Console.WriteLine("Description: {0}  DriveType: {1}  MediaType: {2}",
                            logDiskEnu.Properties["Description"].Value.ToString(),
                            logDiskEnu.Properties["DriveType"].Value.ToString(),
                            logDiskEnu.Properties["MediaType"].Value.ToString());
       }
    }
 }

LogicalDisk 与 DiskPartition 的 WMI 关联

WMI Association of LogicalDisk with DiskPartition

.net

c#

wmi

systemmanagement