SelectClient() public method

Selects the COM client to use for the current context.
public SelectClient ( ServerSystemContext context, bool useDefault ) : ComClient
context Opc.Ua.Server.ServerSystemContext The context.
useDefault bool The whether to use the default context.
return ComClient
ComClientManager Class Documentation
コード例 #1
0
        /// <summary>
        /// Updates the metadata cached for the server.
        /// </summary>
        private void DoMetadataUpdate(object state)
        {
            try
            {
                if (!Server.IsRunning)
                {
                    return;
                }

                ComClientManager system = (ComClientManager)SystemContext.SystemHandle;
                ComClient        client = (ComClient)system.SelectClient(SystemContext, true);

                int[] availableLocales = client.QueryAvailableLocales();

                if (availableLocales != null)
                {
                    lock (Server.DiagnosticsLock)
                    {
                        // check if the server is running.
                        if (!Server.IsRunning)
                        {
                            return;
                        }

                        // get the LocaleIdArray property.
                        BaseVariableState localeArray = Server.DiagnosticsNodeManager.Find(Opc.Ua.VariableIds.Server_ServerCapabilities_LocaleIdArray) as BaseVariableState;

                        List <string> locales = new List <string>();

                        // preserve any existing locales.
                        string[] existingLocales = localeArray.Value as string[];

                        if (existingLocales != null)
                        {
                            locales.AddRange(existingLocales);
                        }

                        for (int ii = 0; ii < availableLocales.Length; ii++)
                        {
                            if (availableLocales[ii] == 0 || availableLocales[ii] == ComUtils.LOCALE_SYSTEM_DEFAULT || availableLocales[ii] == ComUtils.LOCALE_USER_DEFAULT)
                            {
                                continue;
                            }

                            try
                            {
                                System.Globalization.CultureInfo culture = System.Globalization.CultureInfo.GetCultureInfo(availableLocales[ii]);

                                if (!locales.Contains(culture.Name))
                                {
                                    locales.Add(culture.Name);
                                }
                            }
                            catch (Exception e)
                            {
                                Utils.Trace(e, "Can't process an invalid locale id: {0:X4}.", availableLocales[ii]);
                            }
                        }

                        localeArray.Value = locales.ToArray();
                    }
                }

                // invoke callback.
                if (m_metadataUpdateCallback != null)
                {
                    m_metadataUpdateCallback(state);
                }
            }
            catch (Exception e)
            {
                Utils.Trace(e, "Unexpected error updating HDA server metadata.");
            }
        }