Explain how the server control validation controls works, DOT NET Programming

Briefly explain how the server control validation controls work?

A validation control works by evaluating the value of an input server control on the page to see whether it meets certain criteria. The input control to evaluate is specified by the validation controls Control To Validate attribute. You can programmatically cause a validation control to perform its evaluation by calling its Validate method, which sets the validation controlls IsValid property to true if validation succeeds and false if it fails. You can cause all of the validation controls on a page to validate their input controls by calling the Page.Validate method. 

 The Page Is Valid property is set to true if validation succeeds for all validation controls within the page; or else, it's false. The Page.Validate method is automatically invoked when a button control whose CausesValidation property is set to true is clicked. Causes Validation is set to false by default for a reset or clear button. The button click event is suppressed if IsValid is false for any validation control on the page. There are following types of validation controls given by ASP.Net:

1. Required Field Validator

2. Compare Validator

3. Range Validator

4. Regular Expression Validator

5. Custom Validator

These controls are server side controls. Though in up-level browsers that is IE 4.0 and above these can be enabled on client side also.

All these controls have a property called Control to Validate. Required Field Validator ensures data entry into the Control to Validate.


Posted Date: 7/2/2013 2:09:10 AM | Location : United States

Related Discussions:- Explain how the server control validation controls works, Assignment Help, Ask Question on Explain how the server control validation controls works, Get Answer, Expert's Help, Explain how the server control validation controls works Discussions

Write discussion on Explain how the server control validation controls works
Your posts are moderated
Related Questions

What is a DataReader object? The DataReader object helps in retrieving the data from a database in a forward-only, read-only mode. The base class for all the DataReader objects

Experienced Microsoft .NET web developer I have a various projects for which I need a web developer for. The developer will be the sole product owner hence should be dependab

Which are the namespaces in localization and globalization? There are 2 most important namespaces:- 1)System.Globalization - It contains classes that define culture-relate

What is a Class in dot Net? The class describes all the attributes of objects, as well as the methods which implement the behavior of member objects. It is a comprehensive data

I need Ninjatrader Strategy Project Description: UI for managing orders, entering trades. This project will probably take several months and I need dedicated resources. Sk

Name the two properties of the GridView control that have to be specified to turn on sorting and paging. The properties of the GridView control that require to be specified to

What is LOCK escalation? The Lock escalation is the process of converting of the low level locks (such as row locks, page locks) into the higher level locks (such as table lock

What is Post Cache substitution? The Post cache substitution is used when we want to cache the complete page but also require some of the dynamic region inside that cached page

Compute Average of 3 numbers - C# Program I didn't know the exact code for computing average of integer number. Can anybody suggest me the correct way for find out the average