ConnectionOptions.Impersonation Property

Definition

Namespace:

System.Management

Assembly:

System.Management.dll

Package:

System.Management v9.0.0-rc.2.24473.5

Gets or sets the COM impersonation level to be used for operations in this connection.

public:
 property System::Management::ImpersonationLevel Impersonation { System::Management::ImpersonationLevel get(); void set(System::Management::ImpersonationLevel value); };

public System.Management.ImpersonationLevel Impersonation { get; set; }

member this.Impersonation : System.Management.ImpersonationLevel with get, set

Public Property Impersonation As ImpersonationLevel

Property Value

ImpersonationLevel

Returns an ImpersonationLevel enumeration value indicating the impersonation level used to connect to WMI.

Examples

The following example connects to a remote computer and displays information about the operating system on the remote computer. A ConnectionOptions is created to connect to the remote computer with the desired connection options.

using System;
using System.Management;
public class RemoteConnect
{
    public static void Main()
    {
        // Build an options object for the remote connection
        // if you plan to connect to the remote
        // computer with a different user name
        // and password than the one you are currently using.
        // This example uses the default values.
        ConnectionOptions options =
            new ConnectionOptions();
        options.Impersonation =
            System.Management.ImpersonationLevel.Impersonate;

        // Make a connection to a remote computer.
        // Replace the "FullComputerName" section of the
        // string "\\\\FullComputerName\\root\\cimv2" with
        // the full computer name or IP address of the
        // remote computer.
        ManagementScope scope =
            new ManagementScope(
            "\\\\FullComputerName\\root\\cimv2", options);
        scope.Connect();

        //Query system for Operating System information
        ObjectQuery query = new ObjectQuery(
            "SELECT * FROM Win32_OperatingSystem");
        ManagementObjectSearcher searcher =
            new ManagementObjectSearcher(scope,query);

        ManagementObjectCollection queryCollection = searcher.Get();
        foreach ( ManagementObject m in queryCollection)
        {
            // Display the remote computer information
            Console.WriteLine("Computer Name : {0}",
                m["csname"]);
            Console.WriteLine("Windows Directory : {0}",
                m["WindowsDirectory"]);
            Console.WriteLine("Operating System: {0}",
                m["Caption"]);
            Console.WriteLine("Version: {0}", m["Version"]);
            Console.WriteLine("Manufacturer : {0}",
                m["Manufacturer"]);
        }
    }
}

Imports System.Management
Public Class RemoteConnect

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

        ' Build an options object for the remote connection
        ' if you plan to connect to the remote
        ' computer with a different user name
        ' and password than the one you are currently using
        Dim options As ConnectionOptions
        options = New ConnectionOptions
        options.Impersonation = 3
        ' System.Management.ImpersonationLevel.Impersonate = 3

        ' Make a connection to a remote computer.
        ' Replace the "FullComputerName" section of the
        ' string "\\FullComputerName\root\cimv2" with
        ' the full computer name or IP address of the
        ' remote computer.
        Dim scope As ManagementScope
        scope = New ManagementScope( _
            "\\FullComputerName\root\cimv2", options)
        scope.Connect()

        ' Query system for Operating System information
        Dim query As ObjectQuery
        query = New ObjectQuery( _
            "SELECT * FROM Win32_OperatingSystem")
        Dim searcher As ManagementObjectSearcher
        searcher = _
            New ManagementObjectSearcher(scope, query)

        Dim queryCollection As ManagementObjectCollection
        queryCollection = searcher.Get()

        Dim m As ManagementObject
        For Each m In queryCollection
            ' Display the remote computer information
            Console.WriteLine("Computer Name : {0}", _
                m("csname"))
            Console.WriteLine("Windows Directory : {0}", _
                m("WindowsDirectory"))
            Console.WriteLine("Operating System: {0}", _
                m("Caption"))
            Console.WriteLine("Version: {0}", m("Version"))
            Console.WriteLine("Manufacturer : {0}", _
                m("Manufacturer"))
        Next

        Return 0
    End Function
End Class

Remarks

The ImpersonationLevel.Impersonate setting is advantageous when the provider is a trusted application or service. It eliminates the need for the provider to perform client identity and access checks for the requested operations. However, if for some reason the provider cannot be trusted, allowing it to impersonate the client may constitute a security threat. In such cases, we recommend that this property be set by the client to a lower value, such as ImpersonationLevel.Identify. Note that this may cause failure of the provider to perform the requested operations, for lack of sufficient permissions or inability to perform access checks.

Property Value

The COM impersonation level to be used for operations in this connection. The default value is ImpersonationLevel.Impersonate, which indicates that the WMI provider can impersonate the client when performing the requested operations in this connection.

.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.