hi
I've been having this trouble for a long time:

Is there any way I can check if a reference to a range object no longer
exists?

Eg, After creating a reference to a range:

Range refRange = Application.ActiveCell;

I delete the cell (eg, via removing an entire row/column), yet the refRange
object still points to the deleted range object. When I try to use it, I get
an exception.

This problem persists with any type of Excel Interop objects (Name, Names,
Range, etc).

Was wondering if anyone know if I can check if an Excel Interop object is
usable? Eg, checking if it's null or not.

Thanks