I want to validate the value a user enters in a text box, so that it only enters float numbers. I’m not interested in range. How can I do this, considering also culture localization information (e.g. ‘.’ or ‘,’ as separators)?
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I want to validate the value a user enters in a text box, so that it only enters float numbers. I’m not interested in range. How can I do this, considering also culture localization information (e.g. ‘.’ or ‘,’ as separators)?
My usual method is to use a RegexValidator with a validation expression of
^(\d+(\.\d*)?)|(\d*(\.\d+))$. You could ammend this to enable ‘.’ or ‘,’:^(\d+([\.,]\d*)?)|(\d*([\.,]\d+))$.If you wanted to be strictly correct, you’d enable the correct validation expression for each culture.
Also note that you still need a RequiredFieldValidator if the value is compulsary.