Validating and (auto)saving data records created by user

1. Which process should be implemented to validate user given data before it is storing in a variable?
2. What is data validation rules?
3. What is data validation in Visual Basic?

Which process should be implemented to validate user given data before it is storing in a variable?

This process is called form validation. We need form validation anytime we are accepting user input. We must ensure that the data entered is in the correct format, lies within a valid range of data (such as for date fields), and does not contain malicious code that could lead to SQL injections.

What is data validation rules?

A validation rule is one way to restrict input in a table field or a control (such as a text box) on a form. Validation text lets you provide a message to help users who input data that is not valid.

What is data validation in Visual Basic?

Data validation is an essential part of any data handling task whether you're in the field collecting information, analyzing data, or preparing to present data to stakeholders. If data isn't accurate from the start, your results definitely won't be accurate either.