NGWS SDK Documentation  

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IsEmpty Function Example

This example uses the IsEmpty function to determine whether a variable has been initialized.

Dim MyVar, MyCheck
MyCheck = IsEmpty(MyVar)   ' Returns True.

MyVar = Null   ' Assign Null.
MyCheck = IsEmpty(MyVar)   ' Returns False.

MyVar = Empty   ' Assign Empty.
MyCheck = IsEmpty(MyVar)   ' Returns True.