Interfacing Between C# And Excel?

Question

I am using C# interop to call a macro from C#.

This works fine.

However I am passing in an argument which the macro populates in the event of an error.

app.Run(macroName, errrObj, Type.Missing, Type.Missing, Type.Missing, ........);

Is there any way to get C# to actually read the new value that the arg is set too?

Am I doing this wrongly??

The macro simply does this

Public sub abc(errorObj as variant)
errorObj = "HELLO WORLD"
End Sub

http://stackoverflow.com/questions/15828/reading-excel-files-from-c and about fifteen million others. — , Nov 12 '09 at 12:34

score 1 · Accepted Answer · answered Nov 12 '09 at 12:41

1

No, according to the IDL, this parameter is In. There is no way to read it from C#. Alternatively, try to use a global variable:

Dim errorObject as String

Function GetError As String
    GetError = errorObject
EndFunction

Funcion func(...)
   ...
   errorObject = ....
End Function

answered Nov 12 '09 at 12:41

J-16 SDiZ

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Thanks - Do you have a link to the IDL which confirms this please? – Jack Kada Nov 12 '09 at 12:55

Interfacing Between C# And Excel?

1 Answers1