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Tip of the Day
Language: Visual Basic
Expertise: Intermediate
Aug 20, 1997



Application Security Testing: An Integral Part of DevOps

Preventing "Invalid Use of Null" Errors

If your app uses database or other functions that can return Null variants, your app will crash sooner or later with that dreaded "Invalid Use of Null" error. Preventing it is simple: assign an empty string and a variant to your target variable or control:
 Text1.Text = "" & SomeDynaset("SomeField")
Michiel de
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