Wake On Lan

Hi all,

Is there a way to detect programmatically if WOL is supported/enabled on a machine?

Cheers,

--Stav.

I'm sure that it is and that it would be done using WMI. I have no idea what the details would be, but that gives you an avenue to investigate.

vb.net Code:

'//need a reference to System.Management
Imports System.Management
 
Public Class Form1
 
    Protected Overrides Sub OnLoad(ByVal e As System.EventArgs)
        MyBase.OnLoad(e)
 
        MessageBox.Show(WakeUpType.GetWakeUpType().ToString())
 
    End Sub
 
End Class
 
Public Class WakeUpType
 
    '//constants
    Protected Const WMIQuery As String = "SELECT WakeUpType FROM Win32_ComputerSystem"
    Protected Const WMIElement As String = "WakeUpType"
 
    '//constructors
    Private Sub New()
    End Sub
 
    '//methods
    Public Shared Function GetWakeUpType() As WakeUpTypes
        Try
            Using searcher = New ManagementObjectSearcher(WakeUpType.WMIQuery)
                Using results = searcher.Get()
                    For Each result In results
                        Dim item = result.Item(WakeUpType.WMIElement)
                        If item IsNot Nothing AndAlso _
                           [Enum].IsDefined(GetType(WakeUpTypes), item) Then
                            Return CType(item, WakeUpTypes)
                        End If
                    Next
                End Using
            End Using
        Catch ex As ManagementException
        End Try
        Return WakeUpTypes.Unknown
    End Function
 
    '//enumerations
    Public Enum WakeUpTypes As UShort
        Reserved = &H0
        Other = &H1
        Unknown = &H2
        APMTimer = &H3
        ModemRing = &H4
        LANRemote = &H5
        PowerSwitch = &H6
        PCIPME = &H7
        ACPowerRestorted = &H8
    End Enum
 
End Class

Reference

Thanks for the replies guys.

ForumAccount, I have tried the code and it returns "PowerSwitch". There is only 1 "result" in "results" by the way.

The msdn reference page confused me a bit too. It says the following:

Quote:

---

WakeUpType
Data type: uint16
Access type: Read-only

Event that causes the system to power up.

---

That made me think that it might be refering to the last wake up event...???
Just to eliminate any doubts that were created I have tried running the code after waking up the machine using WOL and the result of the code was once again "PowerSwitch"...

Any more input will be much appreciated.

Cheers,

--Stav.

I'm not really sure at this point. When you say 'enabled on a machine' do you mean enabled in the bios? Or enabled in the network adapter?

Both.