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OperationalStatus Enumeration

Specifies the operational state of a network interface.

Namespace:  System.Net.NetworkInformation
Assembly:  System (in System.dll)

public enum OperationalStatus

Member nameDescription
UpThe network interface is up; it can transmit data packets.
DownThe network interface is unable to transmit data packets.
TestingThe network interface is running tests.
UnknownThe network interface status is not known.
DormantThe network interface is not in a condition to transmit data packets; it is waiting for an external event.
NotPresentThe network interface is unable to transmit data packets because of a missing component, typically a hardware component.
LowerLayerDownThe network interface is unable to transmit data packets because it runs on top of one or more other interfaces, and at least one of these "lower layer" interfaces is down.

This enumeration defines valid values for the OperationalStatus property.

The following code example displays a summary for all interfaces on the local computer.

public static void ShowInterfaceSummary()

    NetworkInterface[] interfaces = NetworkInterface.GetAllNetworkInterfaces();
    foreach (NetworkInterface adapter in interfaces)
        Console.WriteLine ("Name: {0}", adapter.Name);
        Console.WriteLine("  Interface type .......................... : {0}", adapter.NetworkInterfaceType);
        Console.WriteLine("  Operational status ...................... : {0}", 
        string versions ="";

        // Create a display string for the supported IP versions.
        if (adapter.Supports(NetworkInterfaceComponent.IPv4))
             versions = "IPv4";
        if (adapter.Supports(NetworkInterfaceComponent.IPv6))
            if (versions.Length > 0)
                versions += " ";
            versions += "IPv6";
        Console.WriteLine("  IP version .............................. : {0}", versions);

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

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.