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I need to receive events from a 32-bit COM-dll into NAV 2013. I am aware that NAV 2013 does not support that. However, it might be solved using Inter Process Communication, like Pipes or tcp. I have made it work when using a 64-bit windows form test application instead of NAV. When testing from NAV, the events raised in my 64-bit dll simply does not reach NAV. However, I can make it work using a syncronous solution, but I need an asyncronous solution, hence using threads. It seems like NAV rejects events from a threaded .net-dll. Could that be the reason? I do welcome explanations and alternative solutions.
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I have narrowed the scenarion to the fact that asynchronous events dont work for me despite following the rekkomendations in msdn.microsoft.com/.../hh169424(v=nav.71).aspx and msdn.microsoft.com/.../hh166110(v=nav.71).aspx.
Here is the test code:
CU:
OBJECT Codeunit 99992 EventTestWithTimer
{
OBJECT-PROPERTIES
{
Date=13-10-29;
Time=10:40:45;
Modified=Yes;
Version List=;
}
PROPERTIES
{
SingleInstance=Yes;
OnRun=BEGIN
EventTestWithNoTimer := EventTestWithNoTimer.EventsNoArgs();
EventTestWithTimer := EventTestWithTimer.EventsNoArgsWithTimer();
EventTestWithNoTimer.FireEvent();
END;
}
CODE
{
VAR
EventTestWithNoTimer@1000000000 : DotNet "'EventTestWithTimer, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'.MyEvent.EventsNoArgs" WITHEVENTS;
EventTestWithTimer@1000000001 : DotNet "'EventTestWithTimer, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'.MyEvent.EventsNoArgsWithTimer" WITHEVENTS;
EVENT EventTestWithNoTimer@1000000000::ChangedEvent@8();
BEGIN
MESSAGE('Direct Event.');
END;
EVENT EventTestWithTimer@1000000001::ChangedEvent2@8();
BEGIN
MESSAGE('Timer Event.');
END;
BEGIN
END.
}
}
DLL:
using System.Timers;
using System;
using System.IO;
namespace MyEvent
{
public class EventsNoArgs
{
public delegate void ChangedEventHandler();
public event ChangedEventHandler ChangedEvent;
// Invoke the ChangedEvent
protected virtual void OnChangedEvent()
{
if (ChangedEvent != null)
{
ChangedEvent();
}
}
// The following method is exposed to C/AL and will invoke the event trigger that is registered in the ChangedEvent variable.
public void FireEvent()
{
OnChangedEvent();
}
}
public class EventsNoArgsWithTimer
{
public EventsNoArgsWithTimer()
{
System.Timers.Timer aTimer = new System.Timers.Timer(3000);
aTimer.Elapsed += new ElapsedEventHandler(OnTimedEvent);
aTimer.Enabled = true;
}
public delegate void ChangedEventHandler();
public event ChangedEventHandler ChangedEvent2;
// Invoke the ChangedEvent
protected virtual void OnChangedEvent()
{
if (ChangedEvent2 != null)
{
ChangedEvent2();
}
}
private void OnTimedEvent(object source, ElapsedEventArgs e)
{
OnChangedEvent();
}
}
}
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Sohail Ahmed
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mmv
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Amol Salvi
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