public void FindNode()
{
OpcClient client = new OpcClient(new Uri("opc.tcp://127.0.0.1:26543/Workstation.RobotServer"));
if (client.Connect == OpcStatus.Connected)
{
INode root = client.RootNode;
IEnumerable <INode> list = client.ExploreFolder(root.Tag);
IEnumerable <INode> server = client.ExploreFolder(list.ToList()[0].Tag);
IEnumerable <INode> s = client.ExploreFolder(server.ToList()[0].Tag);
}
}