.NET Framework Class Library
ManagementObjectSearcher Class
Retrieves a collection of management objects based on a specified query. This class is one of the more commonly used entry points to retrieving management information. For example, it can be used to enumerate all disk drives, network adapters, processes and many more management objects on a system, or to query for all network connections that are up, services that are paused, and so on. When instantiated, an instance of this class takes as input a WMI query represented in an ObjectQuery or its derivatives, and optionally a ManagementScope representing the WMI namespace to execute the query in. It can also take additional advanced options in an EnumerationOptions. When the Get() method on this object is invoked, the ManagementObjectSearcher executes the given query in the specified scope and returns a collection of management objects that match the query in a ManagementObjectCollection.
Inheritance Hierarchy
System.Object
System.MarshalByRefObject
System.ComponentModel.Component
System.Management.ManagementObjectSearcher
Namespace: System.Management
Assembly: System.Management (in System.Management.dll)
Syntax
Visual Basic
Public Class ManagementObjectSearcher _ Inherits Component
C#
public class ManagementObjectSearcher : Component
Visual C++
public ref class ManagementObjectSearcher : public Component
F#
type ManagementObjectSearcher = class inherit Component end
The ManagementObjectSearcher type exposes the following members.
Constructors
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ManagementObjectSearcher() | Initializes a new instance of the ManagementObjectSearcher class. After some properties on this object are set, the object can be used to invoke a query for management information. This is the default constructor. |
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ManagementObjectSearcher(ObjectQuery) | Initializes a new instance of the ManagementObjectSearcher class used to invoke the specified query for management information. |
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ManagementObjectSearcher(String) | Initializes a new instance of the ManagementObjectSearcher class used to invoke the specified query for management information. |
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ManagementObjectSearcher(ManagementScope, ObjectQuery) | Initializes a new instance of the ManagementObjectSearcher class used to invoke the specified query in the specified scope. |
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ManagementObjectSearcher(String, String) | Initializes a new instance of the ManagementObjectSearcher class used to invoke the specified query in the specified scope. |
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ManagementObjectSearcher(ManagementScope, ObjectQuery, EnumerationOptions) | Initializes a new instance of the ManagementObjectSearcher class to be used to invoke the specified query in the specified scope, with the specified options. |
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ManagementObjectSearcher(String, String, EnumerationOptions) | Initializes a new instance of the ManagementObjectSearcher class used to invoke the specified query, in the specified scope, and with the specified options. |
Properties
| Name | Description | |
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CanRaiseEvents | Gets a value indicating whether the component can raise an event. (Inherited from Component.) |
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Container | Gets the IContainer that contains the Component. (Inherited from Component.) |
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DesignMode | Gets a value that indicates whether the Component is currently in design mode. (Inherited from Component.) |
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Events | Gets the list of event handlers that are attached to this Component. (Inherited from Component.) |
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Options | Gets or sets the options for how to search for objects. |
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Query | Gets or sets the query to be invoked in the searcher (that is, the criteria to be applied to the search for management objects). |
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Scope | Gets or sets the scope in which to look for objects (the scope represents a WMI namespace). |
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Site | Gets or sets the ISite of the Component. (Inherited from Component.) |
Methods
| Name | Description | |
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CreateObjRef | Creates an object that contains all the relevant information required to generate a proxy used to communicate with a remote object. (Inherited from MarshalByRefObject.) |
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Dispose() | Releases all resources used by the Component. (Inherited from Component.) |
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Dispose(Boolean) | Releases the unmanaged resources used by the Component and optionally releases the managed resources. (Inherited from Component.) |
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Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
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Finalize | Releases unmanaged resources and performs other cleanup operations before the Component is reclaimed by garbage collection. (Inherited from Component.) |
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Get() | Invokes the specified WMI query and returns the resulting collection. |
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Get(ManagementOperationObserver) | Invokes the WMI query asynchronously, and binds to a watcher to deliver the results. |
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GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
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GetLifetimeService | Retrieves the current lifetime service object that controls the lifetime policy for this instance. (Inherited from MarshalByRefObject.) |
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GetService | Returns an object that represents a service provided by the Component or by its Container. (Inherited from Component.) |
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GetType | Gets the Type of the current instance. (Inherited from Object.) |
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InitializeLifetimeService | Obtains a lifetime service object to control the lifetime policy for this instance. (Inherited from MarshalByRefObject.) |
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MemberwiseClone() | Creates a shallow copy of the current Object. (Inherited from Object.) |
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MemberwiseClone(Boolean) | Creates a shallow copy of the current MarshalByRefObject object. (Inherited from MarshalByRefObject.) |
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ToString | Returns a String containing the name of the Component, if any. This method should not be overridden. (Inherited from Component.) |
Events
| Name | Description | |
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Disposed | Occurs when the component is disposed by a call to the Dispose method. (Inherited from Component.) |
Version Information
.NET Framework
Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0.NET Framework Client Profile
Supported in: 4, 3.5 SP1Platforms
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
Thread Safety
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.See Also
Reference
Community Content
jabberwoky
Example c++ cli to get a list of files in a path
#include "stdafx.h"
#using <system.dll>
using namespace System;
#using <System.Management.dll>
using namespace System::ComponentModel;
using namespace System::Collections;
using namespace System::Globalization;
using namespace System::Management;
using namespace System::IO;
String^ Search = "SELECT * FROM CIM_DataFile WHERE (Drive='C:') AND Path='\\\\Archive\\\\' AND Extension='vbs'";
ManagementObjectSearcher^ query = gcnew ManagementObjectSearcher(Search);
ManagementObjectCollection^ coll = query->Get();
for each (ManagementObject^ mo in coll)
{
Console::WriteLine(mo->GetPropertyValue("Name")->ToString());
Console::WriteLine(mo->GetPropertyValue("LastAccessed")->ToString());
Console::WriteLine(mo->GetPropertyValue("LastModified")->ToString());
Console::WriteLine(mo->GetPropertyValue("Path")->ToString());
Console::WriteLine(mo->GetPropertyValue("FileSize")->ToString());
Console::WriteLine(mo->GetPropertyValue("Extension")->ToString());
//Console::WriteLine("" + mo->ToString());
}