IsNull Function

Tests if a Variant contains the special Null value, indicating that the variable does not contain data.

Returns True when an object variable is passed that does not refer to a valid object, such as a newly created object that has not yet been assigned or an object assigned to the Nothing literal.

தொடரமைப்பு:

IsNull (Var)

Return value:

Boolean

அளவுருக்கள்:

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.

எடுத்துக்காட்டு:

Sub ExampleIsNull
Dim vVar As Variant
    MsgBox IsNull(vVar)
End Sub