by Dinesh Thakur Category: Decisions and Conditions

Validation is a form of self protecting; it is better to reject bad data then spend hours trying to find out an error only to discover that the problem was caused by a “user error”.


Checking to verify that appropriate values have been entered for the text box is called validation. The validation may include making sure that data is numeric, checking for specific values, checking a range of values, making sure that required data is entered.

About Dinesh Thakur

Dinesh ThakurDinesh Thakur holds an B.C.A, MCSE, MCDBA, CCNA, CCNP, A+, SCJP certifications. Dinesh authors the hugely popular blog. Where he writes how-to guides around Computer fundamental , computer software, Computer programming, and web apps. For any type of query or something that you think is missing, please feel free to Contact us.