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Each control:◦ Validates user inputs on client-side using
JavaScript When possible
◦ Validates all inputs on server◦ Writes client-side error message if invalid
1. Required FieldValidator◦ Only validator that checks for NO entry
2. Compare Validator◦ Compares input to: datatype, constant, another
control, database value, etc.
3. Range Validator◦ Entry within a specified data range
4. RegularExpressionValidator◦ Check format against a specific pattern◦ E-mail address, phone number, zip code, etc.
5. CustomValidator◦ Write own code◦ Server- or client-side
6. ValidationSummary◦ Summarizes all errors on page
Easy to use Flexible
◦ Validate any type of input Combines client- and server-side validation
in one control