IsNull Function
Tests if a Variant contains the special Null value, indicating that the variable does not contains data.
Syntax:
IsNull (Var)
Return value:
Bool
Parameters:
\<emph\>Var:\</emph\> 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.
\<emph\>Null\</emph\> - This value is used for a variant data sub type without valid contents.
Example:
Sub ExampleIsNull
Dim vVar As Variant
MsgBox IsNull(vVar)
End Sub