The malicious user can then submit the modified script to the Web server with results that are different than what you, the developer, intended.The alternative to processing data validation on the user's computer is to process it on the Web server.

He is a published author on several subjects including XML, the migration from Visual Basic 6 to VB. In this scenario, if an error occurs while performing validation on the user's computer, the application can directly display the error message on the page that the user is viewing without the page making a round trip to the Web server and then back to the user.

NET, data validation was performed through scripts using either Java Script or VBScript.

With the above-mentioned restriction in mind, you can configure the ASP.

NET data validation controls to enable validation on the user's computer in most cases without any negative impact on Web browsers that do not support the scripting functionality.

The Run At="Server" attribute is required for all ASP. The Display attribute determines how space is reserved to display the validation control message if data validation fails. NET will allocate the space on the page when the page is rendered. Other possible values for the Display attribute are Dynamic and None. NET validation controls uses a script library called Web and implements Microsoft JScript functionality that is only supported by Microsoft Internet Explorer 4.0 and later versions.

A Display attribute value of Dynamic specifies that you don't want ASP.

Some resources also refer to Jscript (Microsoft) and ECMAScript (European Computer Manufacturer's Association), but these are both derivatives of Java Script.

Since only Microsoft Internet Explorer supports VBScript, you'll probably choose Java Script as your primary scripting language to use on a user's computer.

If you choose to support validation on the user's computer, performance will increase slightly.