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| Author | Forum: PowerSNMP for ActiveX Topic: troubles using SNMP manager in a .NET service |
| rnie From: Zoetermeer, Netherlands Posts: 7 Member Since: 02/24/04 |
posted February 24, 2004 2:27 AM - Writing as service in .NET is not a problem (is working as we speak) - Writing a program with dart SNMP managers(s) is also not problem (is also working) The combination is the problem. The difference with a service (according to reg. app) is this : To use snmp for a 'normal' program you just drag the DART snmp component on a userform and the snmp object(s) become available. With a service you CANNOT drag the DART snmp control on the service class. Trying to drag the DARTsnmp control it onto a user form (in the service project) and 'sharing' the code / controls results in an error which is shown in the event manager. (de Service is actually started but will stop automaticly, when I leave out the code with dart snmp objects the service works just fine) Perhaps there is anything wrong with my approache? Error show in eventmanager: Service cannot be started. System.Threading.ThreadStateException: Could not instantiate ActiveX control '35053a22-8589-11d1-b16a-00c0f0283628' because the current thread is not in a single-threaded apartment. at System.Windows.Forms.AxHost..ctor(String clsid, Int32 flags) at System.Windows.Forms.AxHost..ctor(String clsid) at Axmscomctl.AxProgressBar..ctor() at ClassLibrary1.Form1.InitializeComponent() at ClassLibrary1.Form1..ctor() at ClassLibrary1.Form1.init1() at WindowsService1.Service1.OnStart(String[] args) at System.ServiceProcess.ServiceBase.ServiceQueuedMainCallback(Object state) For more information, see Help and Support Center at |
K M Drake From: Utica, NY USA Posts: 3406 Member Since: 07/14/00 |
posted February 24, 2004 8:41 AM Hi, Please see the following post concerning using ActiveX controls in .Net: http://support.dart.com/postings?topicid=2647 Please take specific notice of the second bullet under the "IMPORTANT" heading. Also, in order to get an ActiveX control's events to fire in a .Net service, you will have to spawn a thread that makes constant DoEvents calls. Please see the following thread for an example: http://support.dart.com/postings?topicid=3147 Hope it helps, -ken |
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