Validators

ASP.NET validation controls are to monitor the validity of the data supplied by the user.

We have 5 types of validators are available in ASP.Net to achieve different needs.

1. RequiredFieldValidator.
2. RangeValidator.
3. CompareValidator.
4. RegularExpressionValidator.
5. CustomValidator.

and  ValidationSummary.

Validation Control
Description
RequiredFieldValidation
Keeps the input control as a required field
CompareValidator
Compares the value of one input control to the value of another input control or to a fixed value
RangeValidator
Checks that the user enters a value that exist in between two specific values.
RegularExpressionValidator
Ensures that the value of an input control matches a specified pattern like email, mobile number etc...
CustomValidator
Developers can write their own logic to validate the value supplied by the user.
ValidationSummary
Displays a report of all validation errors occurred in a Web page