I have a text box where the user enters a number. Specifically the number must be between 2,45 and 2,80. I control the keys pressed so that the user can only enter numbers, comma character and backspace ofcourse. I don't allow to press "."
But what happens when the user has set to his own PC as decimal point the "." ? How can I check this with code. Or what else can I do?

Michael Vlastos
Automation Engineer
Company Modus SA
Development Department
Athens, Greece