Validating controls in asp net intimidating cage fighting


20-May-2018 04:00

validating controls in asp net-3

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User input had to be validated so that the information stored was standardized.

Yeah, some people had libraries of ASP functions to validate common things such as postal codes (zip codes for you Americans), e-mail addresses, phone numbers, etc. NET saw the tedium in always having to check user input. They are: In this example, we have a textbox which will not be valid until the user types something in. The text in the innerhtml will be shown in the controltovalidate if the control is not valid.

All you need to do, is to specify a common group name for a set of controls that you want to validate separately.

Tip 10: Other validator controls like Compare Validator, Range Validator etc.

For eg: A Name textbox that should accept a maximum of 30 characters with only alphabets, space, fullstop(.) and a ‘(apostrophe).

A regularexpression like ‘Tip 9: If you have two set of forms (eg: Login and Registration) in a single page and want to keep the validation of the two groups separate, use ‘Validation Groups’.

They decided that to simplify our life by including validation controls. NET validation controls also provide two ways of validation: Server-side or Client-side. This client-side/server-side detection and validation is done without extra work by the developer! It should be noted that the Error Message attribute is not what is shown.

The nice thing about these Validation controls is that it will perform client-side validation when it detects the browser is able (unless client-side validation has been disabled). The Error Message tag is shown in the Validation Summary (see below). Usage of this Compare Validator is for confirming new passwords, checking if a departure date is before the arrival date, etc.

In case the second validation control fires an error message, the message is pushed away from the control since the first validation control is occupying screen space.There are 6 validation controls included in the ASP. There are 6 validation controls included in the ASP. NET, In this article, let us see some tips and tricks that can be applied to the validation controls.This article is for beginner and intermediate users who have been using validation controls. outputs HTML code (related to error) at all times even when no error has occurred.Tip 11: If you want your validation error message to appear in the ‘Validation Summary‘ control, then set the ‘Error Message’ property on that validation control.

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Also, setting 'Show Message Box = true' on the Validation Summary enables you to display a popup alert.

For example, suppose you ask a user for a credit card number.



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