Determine if Parameter Exists in Each Document

[C_Haines_ENG]

I have seen very similar questions posted everywhere, however I keep getting a "ComponentDefinition" error whenever i run the below code:

Sub Main()
	Dim oOpenDocs As DocumentsEnumerator = ThisApplication.Documents.VisibleDocuments
	For Each oDoc As Document In oOpenDocs
		
		If oDoc.DocumentType = Inventor.DocumentTypeEnum.kDrawingDocumentObject
			
		Dim oParas As UserParameters = oDoc.Document.ComponentDefinition.Parameters.UserParameters
		Dim oPara As UserParameter

		Try
   	 		oPara = oParas.Item("Drawing Type")
		Catch
    		oPara = oParas.AddByValue("Drawing Type", "Part", UnitsTypeEnum.kTextUnits)
		End Try
			
		iLogicVb.RunExternalRule("AutoCAD Export.iLogicVb")
		End If
	Next
	
End Sub

 I understand the external rule command line required the full directory I have removed it just for this post, the AutoCAD Export vb code will read a parameter called "Drawing Type" to determine if its a part or assembly drawing. 

However on older iterations of my templates I have used different parameters.

Id like to check each drawing file thats open if "Drawing Type" paramter exists and if not create it, however everytime I run the rule it gives me this error: Public member 'Document' on type '_DocumentClass' not found.

Other posts suggest changing the command to ThisDoc.ActiveDocument but I fear this will just take the value of the first page and will not continuously do it for each drawing missing this parameter.

[WCrihfield · Accepted solution]

Hi @C_Haines_ENG.  Since you are inspecting a drawing, there is no "ComponentDefinition" in the path of getting to its Parameters.  Just remove that from your line of code which is getting the parameters.

Dim oParas As UserParameters = oDoc.Parameters.UserParameters

[C_Haines_ENG]

Unspecified error (Exception from HRESULT: 0x80004005 (E_FAIL))

😕 Very frustrating. 

[WCrihfield]

I think I see something else that would be problematic, now that I give it another look.  Parameter names can not have spaces in them.  I usually put an underscore ("_") where I would normally have a space in my parameter names.  So try changing "Drawing Type" to "Drawing_Type".

[C_Haines_ENG]

Ah youre right im dumb, the Parameter doesnt even have an underscore in it.

Thank you.