C # enable or disable NICs

Enable and disable Nic in C #

Using system;

Using system. Collections. Generic;

Using system. componentmodel;

Using system. Data;

Using system. drawing;

Using system. text;

Using system. Windows. forms;

Using system. Management;

Using system. collections;

 

Namespace networkcontrol

{

Public partial class form1: Form

{

Public form1 ()

{

Initializecomponent ();

Networklist ();

}

 

/// <Summary>

/// Nic list

/// </Summary>

Public void networklist ()

{

String manage = "select * From win32_networkadapter ";

Managementobjectsearcher searcher = new managementobjectsearcher (manage );

Managementobjectcollection collection = searcher. Get ();

List <string> networklist = new list <string> ();

 

Foreach (managementobject OBJ in Collection)

{

Networklist. Add (OBJ ["name"]. tostring ());

}

This. cmbnetwork. datasource = networklist;

 

}

 

/// <Summary>

/// Disable the NIC

/// </Summary> 5

/// <Param name = "networkname"> Nic name </param>

/// <Returns> </returns>

Public bool disablenetwork (managementobject Network)

{

Try

{

Network. invokemethod ("Disable", null );

Return true;

}

Catch

{

Return false;

}

}

 

/// <Summary>

/// Enable the NIC

/// </Summary>

/// <Param name = "networkname"> Nic name </param>

/// <Returns> </returns>

Public bool enablenetwork (managementobject Network)

{

Try

{

Network. invokemethod ("enable", null );

Return true;

}

Catch

{

Return false;

}

}

 

/// <Summary>

/// Nic status

/// </Summary>

/// <Param name = "networkname"> Nic name </param>

/// <Returns> </returns>

Public bool networkstate (string networkname)

{

String netstate = "select * From win32_networkadapter ";

Managementobjectsearcher searcher = new managementobjectsearcher (netstate );

Managementobjectcollection collection = searcher. Get ();

Foreach (managementobject manage in Collection)

{

If (manage ["name"]. tostring () = networkname)

{

Return true;

}

}

Return false;

}

 

/// <Summary>

/// Obtain the specified Nic

/// </Summary>

/// <Param name = "networkname"> Nic name </param>

/// <Returns> </returns>

Public managementobject Network (string networkname)

{

String netstate = "select * From win32_networkadapter ";

 

Managementobjectsearcher searcher = new managementobjectsearcher (netstate );

Managementobjectcollection collection = searcher. Get ();

 

Foreach (managementobject manage in Collection)

{

If (manage ["name"]. tostring () = networkname)

{

Return manage;

}

}

 

Return NULL;

}

 

Private void btnstart_click (Object sender, eventargs E)

{

If (networkstate (this. cmbnetwork. selectedvalue. tostring ()))

{

If (! Enablenetwork (Network (this. cmbnetwork. selectedvalue. tostring ())))

{

MessageBox. Show ("failed to enable Nic! ");

}

Else

{

MessageBox. Show ("Nic enabled successfully! ");

}

}

Else

{

MessageBox. Show ("Nic enabled! ");

}

 

Networklist ();

}

 

Private void btnstop_click (Object sender, eventargs E)

{

 

If (networkstate (this. cmbnetwork. selectedvalue. tostring ()))

{

If (! Disablenetwork (Network (this. cmbnetwork. selectedvalue. tostring ())))

{

MessageBox. Show ("failed to disable Nic! ");

}

Else

{

MessageBox. Show ("Nic disabled successfully! ");

}

}

Else

{

MessageBox. Show ("Nic disabled! ");

}

 

Networklist ();

}

 

}

}