Call iLogic from .NET c# (Inventor 2018)

[C-Hoppen]

Hello, how can I get the automation from iLogic?

I found

https://adndevblog.typepad.com/manufacturing/2015/05/use-goexcel-outside-a-rule.html

https://adndevblog.typepad.com/manufacturing/2013/04/call-ilogic-from-net.html

but I could not do it with c#. Here is my code

 using Autodesk.iLogic.Interfaces;   

...    
        public static IiLogicAutomation GetIlogicAutomation(Inventor.Application inventorApp)
        {
            IiLogicAutomation _iLogicAutomation = null;

            string iLogicAddinGuid = "{3BDD8D79-2179-4B11-8A5A-257B1C0263AC}";
            Inventor.ApplicationAddIn addin = null;
            try
            {
                addin = inventorApp.ApplicationAddIns.get_ItemById(iLogicAddinGuid);
            }
            catch { }

            if (addin != null)
            {
                if (!addin.Activated)
                    addin.Activate();

                _iLogicAutomation = addin.Automation as IiLogicAutomation;

                _iLogicAutomation = (IiLogicAutomation)addin.Automation; <- //Invalid Cast Exception!
            }

            return _iLogicAutomation;
        }

        public static Autodesk.iLogic.Interfaces.iLogicRule GetiLogicRuleByName(
            IiLogicAutomation _iLogicAutomation,
            Inventor.Document oDoc,
            string ruleName)
        {
            Autodesk.iLogic.Interfaces.iLogicRule myRule = null;

            foreach (Autodesk.iLogic.Interfaces.iLogicRule eachRule in _iLogicAutomation.get_Rules(oDoc))
            {
                if (eachRule.Name == ruleName)
                {
                    myRule = eachRule;
                    break;
                }
            }

            return myRule;
        }
    }

References:

..\Program Files\Autodesk\Inventor 2018\Bin\Autodesk.iLogic.Interfaces.dll

..\Program Files\Autodesk\Inventor 2018\Bin\Public Assemblies\Autodesk.Inventor.Interop.dll

Anyone have any suggestions or things I might try?

Christoph

[JamieVJohnson2]

in VB.Net I use this code:

 Dim iLogicAddInGUID As String = "{3BDD8D79-2179-4B11-8A5A-257B1C0263AC}"
        Dim addin As Inventor.ApplicationAddIn = Nothing
        Try
            addin = invApp.ApplicationAddIns.ItemById(iLogicAddInGUID)
        Catch ex As Exception
            MsgBox("Unable to load iLogic Add In", MsgBoxStyle.SystemModal)
        End Try
        If Not addin.Activated Then
            addin.Activate()
        End If

        Dim strRuleCalcs As String = String.Empty

invApp.SilentOperation = True
        Dim iLogAuto As Object 'Autodesk.iLogic.Interfaces.IiLogicAutomation
        iLogAuto = addin.Automation
        iLogAuto.CallingFromOutside = True
        iLogAuto.EnterDelayedRuleRunningMode()
        Dim newRule As Object = iLogAuto.AddRule(Model, "Calcs", "")
        newRule.text = strRuleCalcs
        iLogAuto.ExitDelayedRuleRunningMode()
        iLogAuto.RulesOnEventsEnabled = True
        AssignRuleToILogicEvent(Model, "Calcs", "BeforeDocSave0", 700)
        invApp.SilentOperation = False

  Public Sub AssignRuleToILogicEvent(invDoc As Inventor.Document, ruleName As String, strEvent As String, strID As String)
        Dim customiPropSet As PropertySet = Nothing
        For Each propSet As PropertySet In invDoc.PropertySets
            If propSet.Name = "iLogicEventsRules" Then
                customiPropSet = propSet
                Exit For
            End If
            If propSet.Name = "_iLogicEventsRules" Then
                customiPropSet = propSet
                Exit For
            End If
        Next
        If customiPropSet IsNot Nothing Then
            If customiPropSet.InternalName <> "{2C540830-0723-455E-A8E2-891722EB4C3E}" Then
                customiPropSet.Delete()
                customiPropSet = invDoc.PropertySets.Add("iLogicEventsRules", "{2C540830-0723-455E-A8E2-891722EB4C3E}")
            End If
        End If
        If customiPropSet Is Nothing Then
            customiPropSet = invDoc.PropertySets.Add("iLogicEventsRules", "{2C540830-0723-455E-A8E2-891722EB4C3E}")
        End If
        If customiPropSet Is Nothing Then
            MsgBox("Unable to create event triggers for this file.",, "Event Triggers")
        End If
        If customiPropSet IsNot Nothing Then customiPropSet.Add(ruleName, strEvent, strID)
    End Sub

Note, I set the variable type for the automation to 'object' aka 'var' in c#, because of the Inventor API system_com reponse to all object types, I can't use option explicit.

[c_hoppen]

Thanks for the sample. You gave me an important hint. var doesn't work, but dynamic does.

        public static void TestIlogicAutomation(Inventor.Application inventorApp)
        {
            string iLogicAddinGuid = "{3BDD8D79-2179-4B11-8A5A-257B1C0263AC}";
            Inventor.ApplicationAddIn addin = null;
            try
            {
                addin = inventorApp.ApplicationAddIns.get_ItemById(iLogicAddinGuid);
            }
            catch { }

            if (addin != null)
            {
                if (!addin.Activated)
                    addin.Activate();

                /*IiLogicAutomation*/ dynamic _iLogicAutomation = addin.Automation; 
                _iLogicAutomation.CallingFromOutside = true;
                _iLogicAutomation.DeleteRule(inventorApp.ActiveDocument, "Hauptabmessungen");

                //iLogicRule delRule = null;

                //foreach (iLogicRule eachRule in _iLogicAutomation.get_Rules(inventorApp.ActiveDocument))
                //{
                //    if (eachRule.Name == "Hauptabmessungen")
                //    {
                //        delRule = eachRule;
                //        break;
                //    }
                //}

                //if (delRule != null) _iLogicAutomation.DeleteRule(inventorApp.ActiveDocument, "Hauptabmessungen");
            }
        }

But there is still a lack of clarity.

this works:

_iLogicAutomation.DeleteRule(inventorApp.ActiveDocument, "Hauptabmessungen");

this throws an exception:

foreach (iLogicRule eachRule in _iLogicAutomation.get_Rules(inventorApp.ActiveDocument))

Microsoft.CSharp.RuntimeBinder.RuntimeBinderException

System.__ComObject' does not contain a definition for get_Rules.
why?

[JamieVJohnson2 · Accepted solution]

You will probably appreciate this:  get a copy of JetBrains dotPeek (its free).  Install, and open.  Copy the dll, then open your copy (so as not to disturb the peace):  Autodesk.iLogic.Automation.dll

Expand the list, and you will find iLogicAutomation.Rules(document doc):IEnumerable.  That is your way in.

[C-Hoppen]

JetBrains dotPeek made my day. Thanks a lot!

[rikard.nilsson]

Hi,

Could you please share how you solved how to do a...

 foreach (Autodesk.iLogic.Interfaces.iLogicRule eachRule in _iLogicAutomation.Rules(oApp.ActiveDocument))

Because I still get an error after changing from "get_Rules" to "Rules".

Regards

Rikard

[C-Hoppen]

Ricard, you have to use dynamic  

        public static void TestIlogicAutomation(Inventor.Application inventorApp)
        {
            string iLogicAddinGuid = "{3BDD8D79-2179-4B11-8A5A-257B1C0263AC}";
            Inventor.ApplicationAddIn addin = null;
            try
            {
                addin = inventorApp.ApplicationAddIns.get_ItemById(iLogicAddinGuid);
            }
            catch { }

            if (addin != null)
            {
                if (!addin.Activated)
                    addin.Activate();

                /*IiLogicAutomation*/ dynamic _iLogicAutomation = addin.Automation; 
                _iLogicAutomation.CallingFromOutside = true;
                //_iLogicAutomation.DeleteRule(inventorApp.ActiveDocument, "Hauptabmessungen");

                /*iLogicRule*/ dynamic delRule = null;

                try
                {
                    foreach (/*iLogicRule*/ dynamic eachRule in _iLogicAutomation.Rules(inventorApp.ActiveDocument))
                    {
                        if (eachRule.Name == "Hauptabmessungen")
                        {
                            delRule = eachRule;
                            break;
                        }
                    }
                }
                catch
                {
                    // will throw an exception when document has no rules
                }

                if (delRule != null) _iLogicAutomation.DeleteRule(inventorApp.ActiveDocument, "Hauptabmessungen");
            }
        }

[rikard.nilsson]

Thanks!!

That solved my problem!!

[Khoa_NguyenDang]

@C-Hoppen 

i have this problem

Although i have the Rule to delete in my Part