Validation in ASP.NET and C #

Question

Which is better - client-side validation or server-side validation?

Answer 1

Server-side validation is required because client-side validation can be changed. However, client-side validation usually provides a better user interface, since it requires fewer messages. Therefore, I would recommend using both.

Answer 2

You MUST perform server side validation. Otherwise, anyone can send anything (think of a browser with JavaScript disabled or a custom fake browser).

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Answer 3

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Answer 4

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Answer 5

AJAX.

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