For ActiveX methods, you use System.Type.Missing if
you don't want to specify a value for an optional param.
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wrote in message news:4923358@discussion.autodesk.com...
I'm developing in C# and using the selectonscreen method of a selectionset. As folllows:
AcadSSCopy.SelectOnScreen(null,null);
For some reason it doesn't like my args. What is everybody else using?