Are you ALWAYS expecting a negative number????
You could also use the LostFocus event or some such and validate the result....
If the user types in a positive number, either prompt them to change it or multiply it by -1.
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People think it must be fun to be a super genius, but they don't realize how hard it is to put up with all the idiots in the world. (Calvin from Calvin And Hobbs)
Robert L. Johnson III
CCNA, CCDA, MCSA, CNA, Net+, A+, CHDP
VB.NET Programmer