/// <summary>
/// Reads the local opc servers.
/// </summary>
/// <param name="servers">The servers.</param>
/// <param name="error">The error.</param>
/// <param name="exception">The exception.</param>
/// <returns><c>true</c> if the operation succeeds, <c>false</c> otherwise</returns>
public bool ReadLocalOpcServers(out OpcServerItems servers, out uint error, out Exception exception)
{
servers = new OpcServerItems();
error = ResultCodes.Success;
exception = null;
var result = true;
try
{
var opc = OpcMonitor.CreateOpcClient();
var opcServers = opc.BrowseServers(string.Empty);
// The IP address is not used anymore...
servers.AddRange(opcServers.Select(server => new OpcServerItem(false)
{
Name = server.Description, ClassId = server.ServerClass, IpAddress = "127.0.0.1"
}));
opc.Dispose();
}
catch (Exception ex)
{
Logger.FatalException(this, "Error browsing local OPC servers.", exception);
servers.Clear();
error = ResultCodes.CannotBrowseOpcServers;
exception = ex;
DiagnosticsCollection.Instance.AddMessage("Error browsing local OPC servers.");
DiagnosticsCollection.Instance.AddMessage(exception);
result = false;
}
return(result);
}
/// <summary>
/// Called when [read local opc servers response].
/// </summary>
/// <param name="invokeId">The invoke id.</param>
/// <param name="opcServers">The opc servers.</param>
/// <param name="error">The error.</param>
/// <param name="errorMessage">The error message.</param>
public void OnReadLocalOpcServersResponse(Guid invokeId, OpcServerItems opcServers, uint error, string errorMessage)
{
var serviceDataReceiver = this.GetServiceDataReceiver();
if (serviceDataReceiver != null)
{
var currentMethodName = System.Reflection.MethodBase.GetCurrentMethod().Name;
this.HandleError(invokeId, error, errorMessage, serviceDataReceiver, currentMethodName);
if (error == ResultCodes.Success)
{
serviceDataReceiver.OpcServersResponseCompleted(opcServers);
}
}
}
/// <summary>
/// Handles the opc servers response.
/// </summary>
/// <param name="opcServers">The opc servers.</param>
private void HandleOpcServersResponse(OpcServerItems opcServers)
{
this.OnOpcServersResponse(opcServers);
}
/// <summary>
/// Opc the servers response completed.
/// </summary>
/// <param name="opcServers">The opc servers.</param>
public void OpcServersResponseCompleted(OpcServerItems opcServers)
{
Dispatcher.CurrentDispatcher.BeginInvoke(DispatcherPriority.Input, new Action <OpcServerItems>(this.HandleOpcServersResponse), opcServers);
}
/// <summary>
/// Called when [read local opc servers response].
/// </summary>
/// <param name="invokeId">The invoke id.</param>
/// <param name="opcServers">The opc servers.</param>
/// <param name="error">The error.</param>
/// <param name="errorMessage">The error message.</param>
void ICommServerCallback.OnReadLocalOpcServersResponse(Guid invokeId, OpcServerItems opcServers, uint error, string errorMessage)
{
this.OnReadLocalOpcServersResponse(invokeId, opcServers, error, errorMessage);
}
/// <summary>
/// Called when [read local opc servers response].
/// </summary>
/// <param name="invokeId">The invoke id.</param>
/// <param name="opcServers">The opc servers.</param>
/// <param name="error">The error.</param>
/// <param name="errorMessage">The error message.</param>
protected void OnReadLocalOpcServersResponse(Guid invokeId, OpcServerItems opcServers, uint error, string errorMessage)
{
System.Diagnostics.Debug.WriteLine(string.Format("{0}: {1}, error: {2}, errorMessage: {3}", System.Reflection.MethodBase.GetCurrentMethod().Name, invokeId.ToString(), error, errorMessage == null ? "(null)" : errorMessage));
}