For developer point of view serve side is preferable because it will not fail, it is not dependent on browser and scripting language. NET validation, which will ensure client, and server validation. When the value of the Causes Validation property is set to true, you can also use the Validation Group property to specify the name of the validation group for which the Button control causes validation. Compare Validator Control The Compare Validator control allows you to make comparison to compare data entered in an input control with a constant value or a value in a different control.
It work on both end; first it will work on client validation and than on server validation. It can most commonly be used when you need to confirm password entered by the user at the registration time. Range Validator Control The Range Validator Server Control is another validator control, which checks to see if a control value is within a valid range.
For that reason, clientside scripting has been used in many cases, but as you probably know, clientside scripting is not bulletproof - it can easily be bypassed or simply turned off. NET, webdevelopers were finally given a good, standard set of tools for validating forms. NET is based on both clientside and serverside technology, which brings the best from both worlds, to make sure that validating a form is as easy as ever. NET 2.0, which is the latest version as I write this, comes with several different validation controls for different purposes.
Validation controls are used to: Client side validation is good but we have to be dependent on browser and scripting language support. NET Web pages for user input is to be able to check that the information users enter is valid. NET provides a set of validation controls that provide an easy-to-use but powerful way to check for errors and, if necessary, display messages to the user. NETUsually, Validation is invoked in response to user actions like clicking submit button or entering data.The regular expression is set in the Validation Expression property.The following table summarizes the commonly used syntax constructs for regular expressions: The Custom Validator control allows writing application specific custom validation routines for both the client side and the server side validation.Ever since the first dynamic website was created, form validation has been an important subject.Getting user input through the system requires much attention, and with previous serverside scripting languages, there were no standard way of dealing with form validation.
The following two mutually inclusive properties list out the error message: Complex pages have different groups of information provided in different panels.