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References to form and controls prevent complete form unloading

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When you assign a reference to a form (or one of its controls) to an object variable which is stored outside the form module, you must set the variable to Nothing or the form won't be completely unloaded. In other words, it will become invisible but will continue to take memory.

Note that this isn't a bug, because it's simply a consequence of the reference counting rules of COM. The only unexpected detail is that a reference to a control prevents the entire form from unloading, but this is reasonable because the control can't live outside its parent form, so VB is forced to keep the form alive as well.


Submitted By : Nayan Patel  (Member Since : 5/26/2004 12:23:06 PM)

Job Description : He is the moderator of this site and currently working as an independent consultant. He works with VB.net/ASP.net, SQL Server and other MS technologies. He is MCSD.net, MCDBA and MCSE. In his free time he likes to watch funny movies and doing oil painting.
View all (893) submissions by this author  (Birth Date : 7/14/1981 )


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