ManagementClass.GetInstances Method

Source:

ManagementClass.cs

Source:

ManagementClass.cs

Source:

ManagementClass.cs

Source:

ManagementClass.cs

public:
 System::Management::ManagementObjectCollection ^ GetInstances();

public System.Management.ManagementObjectCollection GetInstances();

member this.GetInstances : unit -> System.Management.ManagementObjectCollection

Public Function GetInstances () As ManagementObjectCollection

Returns

A collection of the ManagementObject objects representing the instances of the class.

Examples

The following example shows how to initialize a ManagementClass variable with a ManagementClass constructor and then get all the instances of a WMI class.

using System;
using System.Management;

public class Sample
{
 public static void Main()
 {
 ManagementClass c = new ManagementClass("Win32_Process");
 foreach (ManagementObject o in c.GetInstances())
 Console.WriteLine(
 "Next instance of Win32_Process : {0}", o["Name"]);
 }
}

Imports System.Management

Class Sample

 Public Overloads Shared Function _
 Main(ByVal args() As String) As Integer

 Dim c As New ManagementClass("Win32_Process")
 Dim o As ManagementObject
 For Each o In c.GetInstances()
 Console.WriteLine( _
 "Next instance of Win32_Process : {0}", o("Name"))
 Next o

 End Function
End Class

Remarks

.NET Framework Security

Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.

Source:

ManagementClass.cs

Source:

ManagementClass.cs

Source:

ManagementClass.cs

Source:

ManagementClass.cs

public:
 System::Management::ManagementObjectCollection ^ GetInstances(System::Management::EnumerationOptions ^ options);

public System.Management.ManagementObjectCollection GetInstances(System.Management.EnumerationOptions options);

member this.GetInstances : System.Management.EnumerationOptions -> System.Management.ManagementObjectCollection

Public Function GetInstances (options As EnumerationOptions) As ManagementObjectCollection

Parameters

Returns

A collection of the ManagementObject objects representing the instances of the class, according to the specified options.

Examples

The following example shows how to initialize a ManagementClass variable with a ManagementClass constructor and then get all the instances of a WMI class and its subclasses.

using System;
using System.Management;

public class Sample
{
 public static void Main()
 {
 EnumerationOptions opt = new EnumerationOptions();
 // Will enumerate instances of the given class and any subclasses.
 opt.EnumerateDeep = true;
 ManagementClass c = new ManagementClass("CIM_Service");
 foreach (ManagementObject o in c.GetInstances(opt))
 Console.WriteLine(o["Name"]);
 }
}

Imports System.Management

Class Sample

 Public Overloads Shared Function _
 Main(ByVal args() As String) As Integer

 Dim opt As New EnumerationOptions
 ' Will enumerate instances of the given class and any subclasses.
 opt.EnumerateDeep = True
 Dim mngmtClass As New ManagementClass("CIM_Service")
 Dim o As ManagementObject
 For Each o In mngmtClass.GetInstances(opt)
 Console.WriteLine(o("Name"))
 Next o

 End Function
End Class

Remarks

.NET Framework Security

Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.

Source:

ManagementClass.cs

Source:

ManagementClass.cs

Source:

ManagementClass.cs

Source:

ManagementClass.cs

public:
 void GetInstances(System::Management::ManagementOperationObserver ^ watcher);

public void GetInstances(System.Management.ManagementOperationObserver watcher);

member this.GetInstances : System.Management.ManagementOperationObserver -> unit

Public Sub GetInstances (watcher As ManagementOperationObserver)

Parameters

Examples

The following example shows how to initialize a ManagementClass variable with a ManagementClass constructor and then get all the instances of a WMI class asynchronously.

using System;
using System.Management;

public class AsyncGetExample
{
 public AsyncGetExample()
 {
 ManagementClass c =
 new ManagementClass("Win32_Process");
 ManagementOperationObserver ob =
 new ManagementOperationObserver();
 ob.ObjectReady += new ObjectReadyEventHandler(NewObject);
 ob.Completed += new CompletedEventHandler(Done);

 c.GetInstances(ob);

 while (!Completed)
 System.Threading.Thread.Sleep (1000);

 // Here you can use the object
 }

 private bool completed = false;

 private void NewObject(object sender,
 ObjectReadyEventArgs e)
 {
 Console.WriteLine("New result arrived: {0}",
 ((ManagementObject)(e.NewObject))["Name"]);
 }

 private void Done(object sender,
 CompletedEventArgs e)
 {
 Console.WriteLine("async Get completed !");
 completed = true;
 }

 private bool Completed
 {
 get
 {
 return completed;
 }
 }

 public static void Main()
 {
 AsyncGetExample asyncGet = new
 AsyncGetExample();

 return;
 }
}

Imports System.Management

Public Class AsyncGetExample

 Public Sub New()

 Dim c As New ManagementClass("Win32_Process")
 Dim ob As New ManagementOperationObserver
 AddHandler ob.ObjectReady, AddressOf Me.NewObject
 AddHandler ob.Completed, AddressOf Me.Done

 c.GetInstances(ob)

 While Not Me.Completed
 System.Threading.Thread.Sleep(1000)
 End While

 'Here you can use the object

 End Sub

 Private finished As Boolean = False

 Private Sub NewObject(ByVal sender As Object, _
 ByVal e As ObjectReadyEventArgs)
 Console.WriteLine("New result arrived: {0}", _
 e.NewObject("Name"))
 End Sub

 Private Sub Done(ByVal sender As Object, _
 ByVal e As CompletedEventArgs)
 Console.WriteLine("async Get completed !")
 finished = True
 End Sub

 Private ReadOnly Property Completed() As Boolean
 Get
 Return finished
 End Get
 End Property


 Public Shared Function Main(ByVal args() _
 As String) As Integer

 Dim asyncGet As New AsyncGetExample

 Return 0

 End Function

End Class

Remarks

.NET Framework Security

Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.

Source:

ManagementClass.cs

Source:

ManagementClass.cs

Source:

ManagementClass.cs

Source:

ManagementClass.cs

public:
 void GetInstances(System::Management::ManagementOperationObserver ^ watcher, System::Management::EnumerationOptions ^ options);

public void GetInstances(System.Management.ManagementOperationObserver watcher, System.Management.EnumerationOptions options);

member this.GetInstances : System.Management.ManagementOperationObserver * System.Management.EnumerationOptions -> unit

Public Sub GetInstances (watcher As ManagementOperationObserver, options As EnumerationOptions)

Parameters

Remarks

.NET Framework Security

Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.