C#

PcTree = new Thread(new ThreadStart(enumThread));
	PcTree.Name = "PollPCList";
	PcTree.Start();

private void enumThread()
	{
		enumPCtree(PCmonitorTree.Nodes);			
	}

private void enumPCtree(TreeNodeCollection t)
	{
              try
		{
			foreach ( TreeNode tr in t)
			{ 
                              if (tr.Text.IndexOf("PC")!= -1)
				{
				  tr.Nodes.Equals(tr.NextNode);				
				}
				else
				{
				    ServerName = tr.Text;
                                       try
					{
						HostIP = System.Net.Dns.GetHostByName(ServerName);
						PcIpAddress = HostIP.AddressList[0].ToString(); 
					}
					catch
					{}
					finally
					{enumPCtree(tr.Nodes);}
					if (PcIpAddress != null)
					{	
                                          //do scan
				              if (breakLoop)
						{
							break;
						}
					}
				}
			}
		}
		catch (Exception ex)
		{MessageBox.Show(ex.Message);}
	
		finally
		{
		//End Scan
		}
}

	<br />
public static bool InDesignMode()<br />
{<br />
  string exe = Application.ExecutablePath;<br />
  if ( exe.IndexOf("devenv.exe") != -1 )<br />
  {<br />
      return true;<br />
  }<br />
  return false;<br />
}<br />