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VBA Is Operator

The VBA “Is” operator is used to compare two object references.

If the object references are the same, Is will return TRUE. If the object references are different, Is will return FALSE.

Is Nothing

The most common use of the Is operator is to check if an object has been assigned to an object variable.

You can see how this works in the procedure below:

This is useful to prevent errors caused by an object not being assigned to the object variable.

Intersect – Is Nothing

Commonly, this is used with Worksheet Change Events to identify if the target range falls within a specified range.

Is – Compare Objects

The Is operator can also be used to compare objects.

Let’s look at an example. Here we will assign two worksheets to worksheet objects rng1 and rng2, testing if the two worksheet objects store the same worksheet:

Of course the worksheet objects are not the same, so “Different WSs” is returned.