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james hendersonFlag for United States of America

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vb.net 2008: update listbox control from multiple sources

I need to update a listbox control from multiple sources.  What is the best way to do this to avoid 2 competing updates?
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plusone3055
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OK, I wasn't clear in my question.  I have 2 classes, each of which monitors a serial connection (com1 and com2).  I need to post the data from each serial port in a common listbox, so I'm concerned about "collision" and was wondering what the best way to do this.
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Nasir Razzaq
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