/// <summary>
/// 连接OPC
/// </summary>
/// <returns></returns>
public bool Connect(string opcServerName, string opcServerIp)
{
try
{
Opc.Server[] serverArray = new ServerEnumerator().GetAvailableServers(Specification.COM_DA_20, opcServerIp, null);
if (serverArray != null)
{
Opc.Server server = serverArray.Where(a => a.Name == opcServerName).FirstOrDefault();
if (server != null)
{
server.Connect();
this.Server = (Opc.Da.Server)server;
return(true);
}
}
}
catch (Exception ex) { if (OnScanError != null)
{
OnScanError(ex);
}
}
this.Close();
return(false);
}
/// <summary>
/// Returns a list of servers that support the specified specification.
/// </summary>
/// <param name="specification">Unique identifier for one OPC specification.</param>
/// <param name="discoveryServerUrl">The URL of the discovery server to be used.</param>
/// <param name="identity">The user identity to use when discovering the servers.</param>
/// <returns>Returns a list of found OPC servers.</returns>
public static List <OpcServer> GetServers(OpcSpecification specification, string discoveryServerUrl, OpcUserIdentity identity)
{
List <OpcServer> serverList = new List <OpcServer>();
bool discovery = specification == OpcSpecification.OPC_AE_10 || (specification == OpcSpecification.OPC_DA_20 ||
specification == OpcSpecification.OPC_DA_30) || specification == OpcSpecification.OPC_HDA_10;
if (discovery)
{
if (discovery_ == null || hostName_ != discoveryServerUrl)
{
discovery_?.Dispose();
hostName_ = discoveryServerUrl;
discovery_ = new ServerEnumerator();
}
OpcServer[] servers = discovery_.GetAvailableServers(specification);
if (servers != null)
{
foreach (OpcServer server in servers)
{
serverList.Add(server);
}
}
}
return(serverList);
}
/// <summary>
/// 获取OpcServer
/// </summary>
/// <returns></returns>
private Opc.Da.Server GetOpcServer()
{
try
{
//"OPC.IwSCP/{108fb1cf-f509-4d86-b1da-54bf1dd67a8d}"
IDiscovery opcDiscovery = new ServerEnumerator();
Opc.Server[] opcServers = opcDiscovery.GetAvailableServers(Specification.COM_DA_20);
return(new Opc.Da.Server(new OpcCom.Factory(), new Opc.URL(Opc.UrlScheme.DA + "://localhost/" + opcServers[0].Url.Path)));
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}
private void GetOpcServers()
{
try
{
ServerEnumerator se = new ServerEnumerator();
Opc.Server[] servers = se.GetAvailableServers(Specification.COM_DA_20);
serversComboBox.Items.Clear();
foreach (Opc.Server item in servers)
{
serversComboBox.Items.Add(item.Name);
}
}
catch (Exception)
{
}
}
private void OpcOptionsEditor_Loaded(object sender, RoutedEventArgs e)
{
Dispatcher dispatcher = Dispatcher;
var action = new Action(() => {
try {
IDiscovery discovery = new ServerEnumerator();
var localservers =
discovery.GetAvailableServers(Specification.COM_DA_20)
.Select(s => s.Url)
.ToArray();
dispatcher.Invoke(new Action(() => { ItemsSource = localservers; }));
} catch (Exception exception) {
MessageBox.Show(exception.Message);
}
});
action.BeginInvoke(action.EndInvoke, null);
}
public Form1()
{
InitializeComponent();
OpcCom.ServerEnumerator se = new ServerEnumerator();
Opc.Server[] Servers;
String sErrFunc = "";
Opc.ConnectData cd = new Opc.ConnectData(new System.Net.NetworkCredential());
sErrFunc = "GetAvailableServers";
Servers = se.GetAvailableServers(Opc.Specification.COM_DA_20, "localhost", cd);
Console.WriteLine(Servers[1].Name.ToString());
Opc.URL url = new Opc.URL("opcda://localhost/" + Servers[0].Name);
OpcCom.Factory fact = new OpcCom.Factory();
server = new Opc.Da.Server(fact, null);
server.Connect(url, new Opc.ConnectData(new System.Net.NetworkCredential()));
}
public ServerOnNetworkCollection(ServerEnumerator enumerator)
{
m_enumerator = enumerator;
}
