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

However, to reiterate, validation will always be performed on the Web server in order to offer validation to Web browsers that do not support the client-side scripting as well as protect against the possibility of modified validation scripts.

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.

He has been a featured speaker at many industry events including Microsoft Dev Days and the ASP. Shannon speaks and trains for companies such as App Dev ( and Learn It ( and has been a featured speaker in training videos with Learn Key. Data validation over the Web is performed in one of two locations: on the user's computer, or on the Web server.

NET and Web Services Solutions conference produced by PRO. He has also worked with large corporate clients including Microsoft, Universal Studios, MGM Studios, Monster.com/Flip Dog.com, Intel, Polygram Pictures, Prudential, Micro Accounting Systems, Sky Harbor International Airport, and Southern Automated Systems on projects using Microsoft technologies such as Visual Fox Pro, Visual Studio. Most applications perform their data validation on the user's local computer.

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.

Users with harmful intent may easily modify the validation script because it is contained in the source of the page that is sent to the user's computer.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.Furthermore, the data validation scripts are protected inside the Web server so they are not vulnerable to malicious user modifications.In its efforts to improve Web development on the whole, Microsoft included in ASP. NET validation controls), which offer an exceptional solution to data validation. NET comes with five validation controls as well as a summary control. NET Web application renders the data validation controls on the user's computer as HTML elements based upon the selected Target Schema property.

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