Vb net form validating

Now have a look in the Properties tab of Visual Studio. The Validation Expression attribute has a button next to it, and if you click it, you will gain access to some default expressions, delivered by the ASP. Here also I am binding the radio button list at runtime.When we run the preceding code it will show: Here the error message is misplaced since we can see it clearly.

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).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.After adding the preceding reference to your page we need to use the following syntax to defend the rule for our webpage.In simple form, the format is like this: Actually when the ASP.

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