Syntax:
IsNull(expr)
Group: Variable Info
Description:
Return the True if expr
is Null.
Parameter Description
expr A variant expression to test for Null.
Example:
Sub Main
Dim X As Variant
Debug.Print IsEmpty(X)
'True
Debug.Print
IsNull(X) 'False
X = 1
Debug.Print
IsNull(X) 'False
X = "1"
Debug.Print
IsNull(X) 'False
X = Null
Debug.Print
IsNull(X) 'True
X = X*2
Debug.Print
IsNull(X) 'True
End Sub