IsNull Function
Tests if a Variant contains the special Null value, indicating that the variable does not contains data.
Синтакса
Е нула (Var)
Врати вредност:
Bool
Параметри:
Var: Any variable that you want to test. This function returns True if the Variant contains the Null value, or False if the Variant does not contain the Null value.
Null - This value is used for a variant data sub type without valid contents.
Пример
Sub ExampleIsNull
Dim vVar As Variant
MsgBox IsNull(vVar)
End Sub