CODEWITHSUNDEEP
c#network-programming
Andrew Simpson
Andrew Simpson

Reputation: 7324

Releasing and Renewing your DHCP-based IP Address

Using C# how can I release and renew my DHCP-based IP Address?

At the moment I am using the process method to use these DOS commands:

ipconfig /release

and

ipconfig /renew

Is there a more managed approach in C# for this?

Upvotes: 4

Views: 2915

Answers (2)

Reinaldo
Reinaldo

Reputation: 4666

You can try something like this:

SelectQuery query = new SelectQuery("Win32_NetworkAdapter", "AdapterTypeID=0");
  ManagementObjectSearcher search = new ManagementObjectSearcher(query);
  foreach (ManagementObject result in search.Get())
  {
    NetworkAdapter adapter = new NetworkAdapter(result);
    adapter.Disable();
  }

Not that your process must have elevated privileges.

Hope it helps.

Upvotes: 1

mclaassen
mclaassen

Reputation: 5128

You could use WMI, but its much simpler to just do it using System.Diagnostics.Process

Here is a WMI solution anyway:

ManagementClass objMC = new ManagementClass("Win32_NetworkAdapterConfiguration");
ManagementObjectCollection objMOC = objMC.GetInstances();

foreach (ManagementObject objMO in objMOC)
{
    //Need to determine which adapter here with some kind of if() statement
    objMO.InvokeMethod("ReleaseDHCPLease", null, null);
    objMO.InvokeMethod("RenewDHCPLease", null, null); 
}

Upvotes: 6

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