Syntax 

IsNull(expr)


Group 

Variable Info 


Description 

Return the True if expr is Null.


Parameters

Description

expr 

A variant expression to test for Null.


See Also 

IsNull, TypeName, VarType


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