DataTypeCheck in comparevalidator control

[Chris Leffer]

Hi.

I set a CompareValidator using DataTypeCheck = Integer to validate a
textbox. When I type 199b on the textbox, the validator control accepts
the value.

If I set the same validator control using DataTypeCheck = Double, the
value 199b is refused by the validator.

This textbox needs to accept numbers only. What is the difference
between Integer and Double in this case? Should I use a
RegularExpressionValidator?

Regards,
Chris Leffer

 

[Steve C. Orr [MVP, MCSD]]

This example shows you how to create a textbox that permits only numeric
characters to be entered:
http://SteveOrr.net/articles/InheritAndExtend.aspx

Here's more info on the details of how the validation controls work:
http://SteveOrr.net/articles/Validation.aspx