How to disable or enable a network adapter

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I have a basic form to enable or disable a network adapter in windows xp when an user select the enable or disable button from a form. I need help writing the basic code to get start any suggestions or link will be appreciated.

Posted 28-Jan-11 4:16am

tupacIT

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tupacIT · Answer 1 · 2011-03-15T04:21:00

I finally figured out and the code is below"

VB

'' Const ssfCONTROLS = 3
        'Dim ssfCONTROLS
        'ssfCONTROLS = 3
        'Dim vmNic1 = "VMnet1"
        'Dim vmNic2 = "VMnet8"

        'Dim sDisableVerb As String = "Disable"
        'Dim sEnableVerb As String = "Enable"


        'Dim ShellApp As New Shell32.Shell()
        'Dim oControlPanel As Shell32.Folder = ShellApp.NameSpace(ssfCONTROLS)
        'Dim folderitem As Shell32.FolderItem
        'Dim oNetConnections As Shell32.Folder = Nothing
        'Dim oLanConnection As Shell32.FolderItem = Nothing
        ''Dim Verb As String = Nothing


        ''oNetConnections = Nothing
        'For Each folderitem In oControlPanel.Items()
        '    Debug.WriteLine("Loop 1: " & folderitem.Name)
        '    If folderitem.Name = "Network Connections" Then
        '        Debug.WriteLine("Loop 2: " & folderitem.Name)
        '        oNetConnections = folderitem.GetFolder
        '        Exit For
        '    End If
        'Next
        'For Each folderitem In oNetConnections.Items
        '    If folderitem.Name.Contains(vmNic1) Then
        '        Debug.WriteLine("Loop 3: " & folderitem.Name)
        '        oLanConnection = folderitem
        '    End If

        'Next
        'For Each Verb As Shell32.FolderItemVerb In oLanConnection.Verbs
        '    If Verb.Name = "En&able" Then
        '        Verb.DoIt()
        '        Exit For
        '    End If
        'Next
        'For Each folderitem In oNetConnections.Items
        '    If folderitem.Name.Contains(vmNic2) Then
        '        Debug.WriteLine("Loop 3: " & folderitem.Name)
        '        oLanConnection = folderitem
        '    End If
        'Next
        'For Each Verb As Shell32.FolderItemVerb In oLanConnection.Verbs
        '    If Verb.Name = "En&able" Then
        '        Verb.DoIt()
        '        Exit For
        '    End If

#realJSOP · Answer 2 · 2011-01-28T04:26:00

You can try it with these shell commands:

netsh interface set interface "Network Adapter name" DISABLED <br />
netsh interface set interface "Network Adapter name" ENABLED

Of course, I can't guarantee it will work.

Here's a link describing different tings you can do through WMI:

http://msdn.microsoft.com/en-us/library/Aa394595[^]

Keep in mind that it's up to the driver software for the NIC to provide the Enable and Disable methods for the Win32_NetworkAdapter class, and 99 times out of 100, the driver does NOT provide these methods.

Pravin Patil, Mumbai · Answer 3 · 2011-01-28T04:24:00

Solution 1

You can not do this using C#.NET or VB.NET.
You will have to use WMI (Windows Management Instrumentation) for this.

Refer http://msdn.microsoft.com/en-us/library/Aa394595[^]

It gives in depth information on enabling disabling the network adapter.
All the best.

Posted 28-Jan-11 4:24am

Pravin Patil, Mumbai

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tupacIT 28-Jan-11 11:07am

Thanks this was a big help but only releases my dhcp I need a method in WMI to actually disable the NIC adapter.

How to disable or enable a network adapter

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