We recommend referring to Power Shell’s about_Regular_Expressions help topic or type “Power Shell Regular Expressions” in a search engine for more information.
By using Parameter validation you can as validate Text Box values as well; although this isn’t necessary the best method.
Depending on the format, you may still need custom validation for control or use the Mask Text Box’s built in validation for Date Time formats and number values.
See Primal Forms 2011: Spotlight on the Masked Text Box Control blog article for more details.
Numeric Up Down Use this control when you have integer values.