IsNull Function

Syntax IsNull(expr)

Group Variable Info

Description Return the True if expr is Null.

Parameter Description

expr A variant expression to test for Null.

See Also IsNull, TypeName, VarType.

Example            '#Language "WWB-COM"
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