Vb net form validating

Custom Validation We can also make an Ajax call and check some condition depending on our needs.In the following example I am checking whether the email id is available or not.You can use the Regular Expression Validator for almost everything, for instance validating an e-mail or an URL.Try switching to Design view and select the Regular Expression Validator on your page.This attribute simply holds the Regular Expression which should be used to validate the field.Since Regular Expressions are beyond the scope of this tutorial, I won't try to explain it, other than it simply tells the validator that a value of 4 digitgs is acceptable, and nothing else.Now have a look in the Properties tab of Visual Studio.

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In simple form, the format is like this: Actually when the ASP.

For placing the error message after the radio button list we need to use the following code after the message body.

The preceding code will just adjust the error message and place it after the radio button list.

For validating a web form using the j Query validation library we need to include the following scripting file in our master page or webpage.

If you are using the Visual Studio 2013 default template then jquery-1.10.2js is available for your Scripts folder. For jquery.js you can use the CDN link or add the reference using the Nu Get package manager (search for jquery.and install it).

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