Validating textbox in c net


13-Jan-2018 20:24

The following two mutually inclusive properties list out the error message: Complex pages have different groups of information provided in different panels.

In such situation, a need might arise for performing validation separately for separate group.

Let’s assume when we click our save button that we wish to validate the controls and display an icon if there is a problem.

validating textbox in c net-66

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The Name textbox works very similarly but we don’t have quite as elaborate validation logic.

The validation control classes are inherited from the Base Validator class hence they inherit its properties and methods.

Therefore, it would help to take a look at the properties and the methods of this base class, which are common for all the validation controls: The Regular Expression Validator allows validating the input text by matching against a pattern of a regular expression.

The Required Field Validator is actually very simple, and yet very useful.

You can use it to make sure that the user has entered something in a Text Box control.The server side validation routine must be called from the control's Server Validate event handler. The basic syntax for the control is as given: The Validation Summary control does not perform any validation but shows a summary of all errors in the page.



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