ASP.NET validation controls are:
- RequiredFieldValidator: This validates controls if controls contain data.
- CompareValidator: This allows checking if data of one control match with other control.
- RangeValidator: This verifies if entered data is between two values.
- RegularExpressionValidator: This checks if entered data matches a specific format.
- CustomValidator: Validate the data entered using a client-side script or a server-side code.
- ValidationSummary: This allows developer to display errors in one place.