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IsNull(Variant)

Checks whether the passed Variant variable has the value "Null".

The special value "Null" shows that the variable does not have any value. Please note that this value is different from the numeric value 0, from empty strings and from the special value Empty which shows that a variable has not been initialized.

See also: IsDate, IsEmpty, IsNumeric, VarType, section Special behavior of the Variant data type