Validating user input asp net

below is the code for validating mobile number with enter only numeric, length must be 10 digits and restrict user to entering illegal characters.There is two ways given below for validation of mobile numbers first normal way and another through regular expression.

validating user input asp net-37

NET Web API does not utilize the request validation feature to sanitize user input.

You will need to add this protection manually if any input will be used in HTML output.

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.

The server side validation routine should be written in any . The summary displays the values of the Error Message property of all validation controls that failed validation.

Request validation helps to prevent this kind of attack by throwing a "potentially dangerous value was detected" error and halting page processing if it detects input that may be malicious, such as markup or code in the request.

Request validation is generally desirable and should be left enabled for defense in depth.

NET Request Validation, such as when receiving HTML markup from the end user.

In these scenarios you should disable request validation for the smallest surface possible. NET Web Forms applications prior to v4.5, you will need to disable request validation at the page level.

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

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