private void Form_Load(object sender, EventArgs e)
{
     Agent agent1 = new Agent();
     //Add a variable to the agent
     agent1.Variables.Add(agent1.Mib.GetByNodeName(NodeName.sysContact).GetIid(), agent1.Mib.CreateVariable(NodeName.sysContact, "Systems Admin"));

     //Start listening for requests
     agent1.Start(agent1_MessageReceived, null);
}

private void agent1_MessageReceived(Agent agent, RequestMessage request, object state)
{
     //Create and send a response whenever a request is received
     agent.Send(agent.CreateResponse(request), request.Origin);
}