IsNull Function [Runtime]/text/sbasic/shared/03102600.xhpIsNull functionNull valueIsNull Function [Runtime]Tests if a Variant contains the special Null value, indicating that the variable does not contain data.Syntax:IsNull (Var)Return value:BoolParameters: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.Example:Sub ExampleIsNullDim vVar As Variant MsgBox IsNull(vVar)End Sub