ASP.NET AJAX Controls

Question

I use ASP.NET validation controls in an ASP.NET web form environment. It is the best approach to save all validation rules on the server, for example, use AJAX to validate a field without sending the entire page back.

I found one control called ValidatorCallout ( http://www.asp.net/ajax/ajaxcontroltoolkit/samples/ValidatorCallout/ValidatorCallout.aspx ), but was trying to figure out if there is a better approach.

Answer 1

You should always perform server-side validation, regardless of whether you perform any client-side validation. This is because there are many ways to check clients, such as switching js or sending a custom request that doesn't use your page.

A good goal is to use the same validation rules on both the client and server. xVal is a good option for this.

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