Aspx validating

08-Jun-2017 20:46

Validation controls can be used with any both HTML and Web server controls.

You enable validation of user input by adding validation controls to your page as you would add other server controls.

Once it comes to serverside validation, it's your job to make sure that no sensitive code is executed unless you want it to.

As you see, it's very simple - just check the Page. Try to run the website again, and notice how the text of the button is changed if you submit a valid form.

The following table summarizes the commonly used syntax constructs for regular expressions: The Custom Validator control allows writing application specific custom validation routines for both the client side and the server side validation.

In addition, validation controls allow you to customize how error information is displayed to the user.

Validation controls provide an easy-to-use mechanism for all common types of standard validation—for example, testing for valid dates or values within a range—plus ways to provide custom-written validation.

Compares a user's entry against a constant value, against the value of another control (using a comparison operator such as less than, equal, or greater than), or for a specific data type.

For details, see Checks that the entry matches a pattern defined by a regular expression.

The following table summarizes the commonly used syntax constructs for regular expressions: The Custom Validator control allows writing application specific custom validation routines for both the client side and the server side validation. In addition, validation controls allow you to customize how error information is displayed to the user. Validation controls provide an easy-to-use mechanism for all common types of standard validation—for example, testing for valid dates or values within a range—plus ways to provide custom-written validation.Compares a user's entry against a constant value, against the value of another control (using a comparison operator such as less than, equal, or greater than), or for a specific data type.For details, see Checks that the entry matches a pattern defined by a regular expression.Actually, that's all we need to test the most basic part of the Required Field Validator. Validation is only performed serverside if necessary!