Validation controls

1. Required Field Validator:
   

   This ensures that a mandatory field is populated.
   

2. Compare Validator:
   

   Compare one control with another or with a literal.
   

3. Range Validator:
   

   Checks the data is within a given range.
   

4. Regular Expression Validator:
   

   Use where the data must match with the given regular express format.
   

5. Custom Validator:
   

   Use a custom validation function to validate a control.
   

6. Validation Summary Control:
   

   Collate the results of an entire form's validation.