IsNull Function
Syntax
IsNull(expr)
Group
Description
Return the True if expr is Null.
Parameters
Parameters | 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
See also