Today, the spread of the use of the Internet has led to the growth of explosive web design. Millions of users worldwide perform many of their important and vital activities through these websites and in the world of the Internet. This has turned the world of the Internet into a vast repository of information, information that is often important and vital, and whose security and proper protection are of paramount importance. The importance of protecting the information of Internet users requires the secure design of websites. To do this, web designers need to be familiar with the types of attacks and tricks that threaten data security and to consider the security points needed in their designs to prevent them. The SQL Injection attack is one of the most common types of attacks that threaten the security of data stored in a database connected to a website. SQL Injection Attacks. It manipulates and changes to achieve a different goal than the original goal. This type of attack can perform various operations from data recovery to removal from the relevant database. In this project, an attempt has been made to get acquainted with this type of attack and also to examine some ways of securing against this type of attack. For this purpose, to better understand the issue, examples have been used to implement the desired examples of ASP.NET 2.0 programming facilities as well as SQL Server database management software.