When validation occurs on the server, then its known as Server-Side Validation. Server-Side Validation is a secure form of validation. The main advantage of Server-Side Validation is that if the user somehow bypasses the Client-Side Validation, we can still catch the problem on server-side. Server-side provides more security and ensures that no invalid data is processed by the application. Server-Side Validation is done by writing the custom logic for validating all the input.
The following are the Validation Controls in ASP.NET:
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