Visual basic testing for null

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Privacy policy. Returns a Boolean value that indicates whether an expression contains no valid data Null. The required expression argument is a Variant containing a numeric expression or a string expression.

ISNULL in VBA is a logical function which is used to determine whether a given reference is empty or NULL or not that is why the name ISNULL, this is an inbuilt function which gives us true or false as a result, based on the result we can arrive to conclusions, if the reference is empty it returns true value else false value. Finding the NULL value in the worksheet is one of the frustrating jobs.

This function is available only with VBA and we cannot use this with Excel worksheet function. This function can be used in any subprocedure and function procedure. Your code is way more cluttered than necessary. Count - 1 fixUIIn comp. Components i , style Next End If Much more readable. Use For Each instead: If comp.

Konrad Rudolph Konrad Rudolph k gold badges silver badges bronze badges. The Overflow Blog. Stack Gives Back Safety in numbers: crowdsourcing data on nefarious IP addresses. Featured on Meta. New post summary designs on greatest hits now, everywhere else eventually. Related Hot Network Questions. Question feed. How to check null String in vb. NullReferenceException Next : How to vb.

Download Source Code. Print Source Code. Object, ByVal e As System. EventArgs Handles Button1. How to vb. Mail to : feedback net-informations.